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 0x34f0a1c17403021287ff94f6fda930438a05ec23ae29bf8567bfe0f24ea03a00. 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/11df6719-5442-4130-a52c-c0eae325a623.json and https://artists.proofprofile.net/proofs/artist/11df6719-5442-4130-a52c-c0eae325a623.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 0xcd14ff4ffbb10831286e2509094c31df4c0ed32a9666dcd5404d661aee6e2f40. 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/TCJPH1836544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3747b2e4cbed804461eee8b6eddac0b764d96690f95e5805d7cba67a285d39. 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/TCJPH1836548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f411e28b49dfe602c9d5c7f024d17436f1348fd2d6e2df7401ab1750edae2d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:58Z), 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/JPZ922000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d5095cbc10ca2679ff8d15e5e49e85493146038a596d6a7b9ad5941d533772. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:19:49Z), 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/JPZ922000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e94ddd40853efa03b9d2edea085217a78653fac6107dbf44013053adf538d4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPZ922000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd51167fb2dc690aa265ff8681886c803fd3c5d43def8d2374cdab1fbe3712. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:07:41Z), 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/JPZ922000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e1d1c410b37c496af1e5baa37736c30985027b18c84986cbf54cc35b11c06e. 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/JPZ922000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e6fd2169049ca10b081bce2cf6bd5b36af68540c6512f2151d6e93b455ecc4. 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/JPZ922000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89baaa0f8ade58b3abd15bd261be7d3529e19b1c414b8a4123b388e3b3c54f8c. 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/JPB602079122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efbf20e509348b51e28fd4b11024ecafe7cb3224595fd5fc3b73304e02c8064. 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/JPB602082696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2122a2c03db68d27f028f9429455009d9a1ee76fe1af005e82c9b846cf6535b. 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/JPB602087528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1417877774df527c8240cdb184713ff7cd33b199365f071e380f4207477bcaf. 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/JPB602180448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51750ba3c05491bafc3011b041b49d8d985efb67f7ea9680af63c7817f5944c5. 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/JPB602121989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a736f32087d9ea9d49304a8648f9561226f86ec387fee593c5f0b102d2f5864. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPY392300866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80c46a2e12d49ff80e74cf07a5bc1833086dbb51b521b9f4883c15efc496388. 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/JPY392300938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637beb5e9cd257ee221b567ba2e26dd8083e438e2dcc3a72bb5cbef2d6c3950b. 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/JPY392301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c27f7dcbc6214ddf9052e5c545dd305b17ba8f2dc5f09131e65941b09bc60d. 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/JPY392402062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458c7e8e1a572ae55b419012f81b7770733b7403fae29e04b9309727364f4fc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPY392402389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2122a2c03db68d27f028f9429455009d9a1ee76fe1af005e82c9b846cf6535b. 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/JPB602087528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5538cc25bb19e14eb06d1c035b68f7826884e99ad6da667b24b6f32d652f684. 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/JPT362000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55807df1068bec0e736a33c3bb8648b1439a26ab6a9c0899896cb5c7c1628dd6. 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/JPB602170092.