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 0x25baf5367d35acf583069fede438a40a1b2393483724df980d02a55116c335b3. 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/636e47bf-ba5b-41bc-8826-37c5c9931081.json and https://artists.proofprofile.net/proofs/artist/636e47bf-ba5b-41bc-8826-37c5c9931081.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 0x8e7a1d4bdad467f922b90a24dfc51762cdc671e383b69cc82af2ada2536d08b5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM6N22261416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88464adbb210e6d14956c77643e097965071e18967622544a648dab08f20b6f7. 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/QM6N22261427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f2316db71170165e46515719fbada7226a3948dcab61364faee418e5f8dcdf. 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/QMBZ92259127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6cbefa910f8da724d418d393853efcc7b377922c1f9fb7e121f08e73872a80. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMDA62200935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b4dda712d5e7730584e3e783872c327a1701669ed8cfd5a492b7eb47f5024f. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QMDA62226211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee987d663213ddf0d004397fb2b99e49ce195f7fa48c7664521cdb3e31ed94. 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/QMDA62214428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8773ceee9775abef35e03c097af01de9c994d3ec5199b3d43eeb6899c180222c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMDA72203291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc275b380e4c7679b18210aab45ad911e0e64e14a74e6d7e5973791c56aab13. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMDA72211836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e40eb75a455470f0ae3e9260a7e2776973ac99c5cee03166fdd324a4d3246c. 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/QM4TW2301646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5496b9dae642af09087c1006f5efc769af91bfe1fb8b283bad2b1f161873c32. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/SGB502337205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad956d5d17ad4a86b4163cc5e5c80e7d8e580db56b918fb4311567241f0dd48b. 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/SGB502337730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a5e51ddff9c4901d3f9811600ca7d3e40288c7e15341cbfccfe39e9ca9ccad. 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/QZTRX2326956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd61836c4092ec40b96c087de91968ccc1b210a383ef85cee9851dd51841a8a8. 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/QZTRX2391061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c7e579db14401253266a7c942d34a70bc063f222601b9bba3afd3a4e1a747. 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/QZTV32344341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96510c8ee135a77f55678d24ae3f3c8645bc436ac11d02240555d9019f957354. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWDD2319292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd2cb5d58d8080671bc0b3604a020bf25eb2390afe4953762266de05348d83. 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/QZWDE2381343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b8ac0f81f11eaae62f73ad1d7acbc07df1287ba5d5dd9644197739c2ab5581. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWDE2381345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3c0bac3729c37e6dbb4630a0de161fc707057ca5ed60ba4faa9fbd6609568d. 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/QZ5FN2419006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcc1db9b8fe4b8d032ada64e55069648d5f53cab5629ab3343892cdd26bc0d. 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/QM7282424943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab577aa0f1dda19d690f7310559d0483768275d0aade5d364b42f26738104c0. 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/QMDA72420628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354636fb910c41d403459ed8b5d9bdabf4f7fe38e9a779d32592aa79c2dd85f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMDA72458065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef50090f611017f68a40194654ab9a5ba1eb25f3481262a8452d4c4e753b122. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA3A2235083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b70081a81943184d86c2c19fd2a9ec77953ff080aebacbdc28f8a82cc33cbd3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXBAV2578433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b70081a81943184d86c2c19fd2a9ec77953ff080aebacbdc28f8a82cc33cbd3. 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/GXBAV2578433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab4b8f3ef60084508ea731abdf829306b289b247709b95a127690b236e9bc3a. 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/GXBAV2527668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b972602d8ee6486269ba47b91d8f62e04e494731d72c32237c244f1f69a1c22. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QM6N22513662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd32fa5d830b5a2d640a75a62eafe99ce58e8cc4d762ffdab5ccea2814f2f1b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:30Z), 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/AEA3A2529460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6082a9c0356a9f8fd4a7671ccb53228d02606c12513158296ddd0871ccc25fd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M32512919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c61c6d1ddd3e4e7f7023bcb5cfee6dabf1621be29f1ab319a514aae895b02a. 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/QT5M42589841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5afcc80609315c2e1ea4e5c5c6bc8df37cd56e7431305f4c60293b8415c4af. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT5M42559108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e0ac0ec518fd6e50e389cae80c7225dcc3c676952ac20635ea2b91196371b. 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/QZMEM2226236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9facd1bd3c5f2a9743c39ff5e457ea5e36cb21a8ac6ba35a6b37f959e63fee7. 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/BCHCR2300001.