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 0x91a705bab5b3bb79ed250386d38bfa31d4506875ab8c4a3e436a4e0db06c194f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c316640c-2da6-46b8-9006-d0e680088ba1.json and https://artists.proofprofile.net/proofs/artist/c316640c-2da6-46b8-9006-d0e680088ba1.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 0x9ca3c7396d590b24f7a084238711662e8f6a26d6030b977843b6e3657b857409. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DEEY72000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7300c853c6ab67aea66ddeeacd078f5bbc2923b43483da3de0f067d8e8a53c97. 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/DEEY72001000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485ebb9002c714f806a33570bc360660d6b7aab0bd3f8edbb33d04dbcf73072. 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/DEEY72001080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d424d3212e23424313c8edd441eb8b6623ca4b4cefac3d2a7151ea654d0aed4. 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/DEAR41615324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac604d4d05f26103dcf3e2af8cb64c9790f3877dff0c5f0d24d16689cb68b8a. 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/DEAR41615338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8a1216ad30e2dbeadb37f61dbf9dc9df592da4be891740555c064de3704b28. 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/DEAR41615339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b424114781b8c64aca2925293d02eae2ac155b39a7ea963e1bfe8edae17e6c. 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/DEAR42145914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c07a07e4c96df8f8a83fb771215c22ebec51faf18885bc9ed54ea096496145. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEAR42174531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1297bde9b52829340426f460c649223731eb1d131be8430ff8cffcf49837fdf8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEAR42135323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c2095bd7d03e16cb935dbfeb754633e0995391641691c14c7fe4a42618b7bd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEPT62451003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dcffcdc96e4ef50307d56d1aaf08e5d7eaa8ac8e76abc2a87b76f746ea4a54. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEPT62451004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953835c1365594fa17092e5768b6a4c6b5a00b5e45b2a77b6eed71ca2d9ff0e4. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:09:14Z), 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/DEPT62451005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4605ae1e6b5f422fcacfbeea37a67807495dac17c177fe3076ad81c891492073. 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/DEPT62451012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe60913df53fd14a75da8523d25f5b48827ea3377e665226c09a08c548d1feee. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEPT62451019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7666dc519f3a96b74ac4d13a47954acbb16c4d9d5c97224c09100849e5240e14. 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/DEPT62451016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac53ccf5517daa81f737c287802a32b1175ee4fe26e7ffc2f8c823cff265b8d. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEPT62451014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0767c365a48e85e3cf3410ac5e251b5d1bc9d5820422cfa76e5f1c98cdbe86. 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/DEPT62451001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169a1254f6c8f26dcbad21544e3f453e579a68c016ad4f4bb751695ee2939043. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:53Z), 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/DEPT62451015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4ed9fe5d66783c180ac569cafb3865fb20f0cdaf4dd7efffb67f4494f64f1a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEPT62451018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a25db778baddf152450feaa6a9ec26459d8ced24ad1ea6ca51d31f6b2842f28. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPT62451017.