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 0x18adb8c5b7d4430731904afab4525ea562623c24d6c216ecd9f9692942bd29fc. 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/248cde15-1b8c-48fb-817b-b26e2f634af3.json and https://artists.proofprofile.net/proofs/artist/248cde15-1b8c-48fb-817b-b26e2f634af3.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 0xcc38e4bb64f58e1f252de966b1dcd5b1e7b2d452c336583711017dbbbb7e935e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEYOK1501128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb3b5183f5219cf4e2995b16c58ab57fec9a740432eda27d46d2f9dc380e1b. 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/SEYOK1501129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f9251587238fe9610b20ad85257b584b13def14ded6f94ac3de6ecc6ff451. 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/SEYOK1501130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3fb4a75489d6de7fe66af5fcba2be012a5b24158f18e48489fd329f007439. 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/SEYOK1501133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b15662dc30f365fff34c43d004a3723acc136e7260db446f1f5b76acc2b69. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYOK1545860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ec29a8abf5dcc378ee022d581f53116cd518cf99a09603dce41c8e0c1a7da9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:13Z), 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/SEYOK1545861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42485601402d247b18f088b853b4da88f4c80508d2bed5050b8c97c9bcb9f20. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SEYOK1545864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2532bb2493acc9114654067cf763f7991496bca9c17afffd20a534063e5387f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/SEYOK1644735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e6e73d8ca9cb73337c0e7659f0255668065eabfd1320c0b5f72e435071778. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:45:04Z), 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/SEYOK1644736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61113148d85f1a301e93cbf8b07b6ddedb5d8ca9a0a87dd2f4dc4cda6ddce757. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:05Z), 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/SEYOK1727172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01eada326e8de60c2b4dd52c2a946d8c410aa30a632212bfde89a0e7b4b3bc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK1727175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e32d114d0fd2dcaef593716ad51541241c3ee9915aef0029322b0aa53cc0c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYOK1727176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e0815e8bda69b71c17b8cd4ccbb26badeec8b4d676e6b868974e73902b3dd. 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/US57M1816802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0521bc2efa36093dc8995f7ffeb5288279f0afc21f709a5cf2c0be0f39e9c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US57M1816805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9acfbde9daefccdb54367634a94637f45ff5132283c113d54dce72b2037989. 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/SEYOK1869363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1638cd0692d1c50cfd566733a158583310ab5d419348955eb1bc78f492b30d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SEYOK1869365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989931c4d27d991207d47b3be1f8d2cd6af25be05f47421f4a55a345f8c63a49. 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/SEYOK1869366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21818d408fd54becb2d2d8b5900a0250bf034181e1910ea28bf55aa4dc624d3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:10:15Z), 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/SEYOK1869367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6215d64e571cdbb855133303b0526bd05a773875aa4e04690e230a535c62e8b. 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/SEYOK2014727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00005b2399d87a1734b5a77315cfe7eb3f7e23e67665f07589b014ddf7ef127. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYOK2014728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe196c56e853a832e9e3f6e6efcf0438d16e9929384f3380b1584301ae65cb1. 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/SEYOK2014730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97370abd6e4900fd28c3c02013b67ece559b94bd13e93b69eece7dedbf3d769. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYOK2014731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6759754e17006960b9179bdb56cedbc73ff7fdd1c0e1e73548df37d6ab9e24. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SEYOK2014733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fdef37d99770c09ed014fa215bed3daf35098d257feeedd8794259719d9683. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK2014735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f0bd61699966ba50cd5e9f94974eda83689bc00af55d3b09713692a59910b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US57M2021401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8586606493149285cf02809cd877e66b37b91eea1fa89defbebd10bfb70388d6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US57M2021404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff708233433aade299c5402068d94b525dac00b2eceb2365497de713de5a7e8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:43Z), 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/QZHN72114057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30813d32f72957e25e501f81da934e6d87c6f833c4cad07037a4a5041ebb92c9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHN72114058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00afaffa8eceff0be6786e2e8935166722b533cc16066b5a0dfb12d648097ca0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZES82144525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ca09695a3cd8ab2de3e582f8249a23c3f4458a51efd0fc1f2ebcab7c3fde8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:52Z), 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/QZHN72114059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d50aeea7d80098d67e1c4d5dd1bdab08c6dd8763333844a5eef6bede6d3c96b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN72114061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ca71b13d0493bdff89fdcd24240213ab4790c96ce229c6aa2c55462e41672. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZHN72114062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c8fe43f3288d66a0ceec79c4d6d4d6c652346b2a067e1a0059b44b15c7f18. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZHN72114064.
All I Ever Wanted - A Tribute to Depeche Mode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb416420949f04351a0dc979c5f1fbc9d7660109d14525c71f13973fa4f23a77d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6XS2201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2438679ce61601dc04dffdf03685e07ccf60915d6a8afa270bc8277f53b1d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM21944940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c65fae69bcd4bced68f6f2a4c72809550f1778f9d543e42d341cb4c7a1a6e9e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US57M1919105.
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 0x77423488aa819509911e25ad1bc0cedd716a531515cd3508f62844a3b0d41933. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FRX452077815.