Mariano Javier Castro (born 31 January 1978), known professionally as Dread Mar I, is an Argentine singer of reggae rock, reggae en Español, ska and pop music. Early life Born in Quequén, Argentina
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc25c7f60a23105fb87af00c6165a85f8fb32a854cbd4310b2f6d3180649dcb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/138e6dd5-52a3-44ec-9836-f4a34a9d8e35.json and https://artists.proofprofile.net/proofs/artist/138e6dd5-52a3-44ec-9836-f4a34a9d8e35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1694188be8a69d6dfdabf78223da6bfa8c37a5cdfa7c5f232e473bb7dc686c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53879a151bc1f62645ca34d9fda62f695627af3db4799b8912be2991a150ed2a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddda1c6811cdb5988efd13f1ccc2ce473c8e4504b18298c63e40dc18773e4dd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bd68b5f85796cd02af1c8b521f1c355dd80b97377b3d4ab9f578e832729905. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072b031f4c7159ddf4a128885e3def4e7d6129806e40d2d692ea2c4cfd3b8822. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807b5e84f0ae6ff8d25188e78815d197828b9a2de818add5e092ff51a1e9cff1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf3e8c693f8a19066f321bed9d6bd836777dfd0f76e127060c9ab645080df3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd291ea348a5a9b200aadd47233b267a0fa532522f8f6c5413c24d03da298fe97. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1694188be8a69d6dfdabf78223da6bfa8c37a5cdfa7c5f232e473bb7dc686c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53879a151bc1f62645ca34d9fda62f695627af3db4799b8912be2991a150ed2a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a2c0e0bace8cf2016b12cf97cb679413086f6de46b2d09bfc6917631113b04. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2f2e5609431bd853a5a3fba686e67cd7b76cb2458e1ab950db873531129afd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf3e8c693f8a19066f321bed9d6bd836777dfd0f76e127060c9ab645080df3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed800d4824ba96a016e4863d009719c3547820da929168a2342e066375f140c5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4854438fa666b0676571810ca8500696e3cb169966e67bbff1d76d36c0aa95d7. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed800d4824ba96a016e4863d009719c3547820da929168a2342e066375f140c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0267bf01239081fa40f64c782e10d30bd9a42b3b2bfa16c688d23cb28bbf5ef2. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954f764e6fb08e95048b5a6460409472f4460335d431c1d1d5e397266a080dca. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd815f3d876879388689697b9e01b156ab50ef669150e42c6c9ee1aa11f31cfb9. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836bb60725fd855f7827eb464e1adad3eba77eea2f4aed62f34717ae13e91b92. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec6c73f0bed9dcbf10a2117996ba44fbe934a0365f17679fe2a757a1ea4fcc0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbe10f5653aef1e5449dff7f1113de378e9dc333723e7677435cc5fca148df7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332704e072332242d07e3074fe7de193157a28ff3d0b9e42717cc92fdd57d8e0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe5ee001b7a77da7141f5e89d75df4dabe9c3216452e98117d2aea57856424. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe868a51c340fc4778fc662e2a0196a88ac59d1c8a3cec3d7ce5301bf9b2de6d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b37bc577c8c6a08dc18cd96997a97113ed6755877eae80c2a370124cf03510a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817810c115e57fe83766153061158333598e1c1f8472339bf4bd0480c8e0633e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe260e79dd9a248cee8d9f662164691addc94995734d47932f1e12c8fad566. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e100857cd0afa86383d5e75b73459fd84c71270a7e766389a39c016532eab15. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce3d8f140056fe0f197ac732de163fdb3dc0e225bdcfb3916028eb5f45a1c59. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddcc71efc216f8c146997377654ef5506d33781ee2dacb6fac22db1b582f0ed. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe5ee001b7a77da7141f5e89d75df4dabe9c3216452e98117d2aea57856424. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b37bc577c8c6a08dc18cd96997a97113ed6755877eae80c2a370124cf03510a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da2c7f23a0254c42b92549b6094cde28a7783dd5bcf8a2e7372521b11be9bf0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b72f5e407589fafca1f61c0faf36ab86c9295ffad90b8f9c4571fdbcf722d68. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7c6576265360f5ce2f6c5454de429888c0178e58c577d6eb7dbd90cb2a1fdd. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddcc71efc216f8c146997377654ef5506d33781ee2dacb6fac22db1b582f0ed. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743d03834017430220a7c9532ade3e8ce945a7a006631bc95b6b31f93582abb1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d6a6c9aa2822b75055fe3147f01c473aa17292f24be2475bca0ee59be4c70c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ART0G1200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0766431b1ad63dcb56247d69dcc360896dce57e7b727e5af4de5880e7e27efd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AREX01400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9246caec6194fffa7cd809e3b6739e6a14ae075fe323c7eac0454c816b806a60. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AREX01400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a12d9ec0eb9cf93ec78eb4e609ea2a7df2b262290d722f8dc784fdd5f23d8. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AREX01400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b9247d844650ebee42ed9cf24e90f2064280e85fb569dda2706df49cec5693. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AREX01400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb083dd87905a93c8955c8a05695503f5bbc61d7380a405b6ec9020a9f776c9. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF102100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d94894821e8b7796aea1154fe6f8805c293a375f4486b585351a87485ca2ba. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARV102500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b101ba198cecdd22b2e23d8fb04d51e59fa95ac5be0efa879437c886d535e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSD12200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0473a0e32a4ec3c85d3fc0acc38d2992587644fc09c3ba2366c8d122587096. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWL12200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a07d622563b0df76ae4382f726f78893859ebcf2528d38a27a4f61a2265da0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF471200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9494d77572358988333d598b59425d325fe37b36e6eceecbbfbdc24507218d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACL1648108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b04918e54d881948159a4763275b5512b7b5bbca607092f8fd92ac3525b85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281886585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce778d8e0150af270073b116e1a4422a12184b42714c3bbe9749b66fa61e8858. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CLPP22300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f746d618f0f38e406a8e0211f3202a4eb751bb3b3d2d110ecf0bf4e9db8463. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYB282000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf073ed24defdb541ec44cc9b5ef74549e1996e63f87c77f7c344687b1951060. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce778d8e0150af270073b116e1a4422a12184b42714c3bbe9749b66fa61e8858. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CLPP22300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce778d8e0150af270073b116e1a4422a12184b42714c3bbe9749b66fa61e8858. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CLPP22300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb9d4c674648c2401ccdbc422fed82ffbe554a696beab9d1a751b53ddbfadc7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR2AL1200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10802582984de2279d1840cb605ae521ea91b285ffa529cda4c6235eca7d73fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF471600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10802582984de2279d1840cb605ae521ea91b285ffa529cda4c6235eca7d73fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF471600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a5938de836cec3e7fe7a7d318bde8138756d5b28ef59c68e3ed3b97b0cf6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARG601300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9480de866e944729e0f8ff82e4649d0c59d73285aecbc56ffd6ab6e02c47c987. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF101800150.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b558a99ca88e569a0030dccea897c9adeb4760e82c4d2ae0a547c6105a7924. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81798421.