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 0xf02e1f359926f7ce34da1894610c4134a200ba258e8bab7c92175d1aaf46459f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/920be52d-1432-4361-b75f-c72bba0398f9.json and https://artists.proofprofile.net/proofs/artist/920be52d-1432-4361-b75f-c72bba0398f9.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 0x1a9d21c49347e2d892135b13daacc3f81b398a3fff861bea59ec9c56de6317c8. 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/FR59R2251903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda089a0c1090a2bf24bf38e9ccb4c879ad599b2dcf1ec974a6ad593b1b0b70d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2251904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fea3b2ce3728db17609703a7f043cfd1102562a4901eb5054368e44795ff19. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2251905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac864034760fb3d4cebfac1d57a1a0e05b94d060e9e28ad1288add806731b6. 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/FRX452114522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1849ea09d50b3769c22a9044eee91c7ed70a73fc80f1bab01951e28578d815. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2251906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91441bc6e675195712dc55ad9ab5d0e2959b9f9bdb79a4eaa63f212849b23e70. 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/FR59R2251907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d824aa200a011644866dbdcc6e94c29f7f007377a1fcaf6e471d75672af79. 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/FR2X42134522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3ee2620828fffa1f3f7eece46eb4deff4671c3b5a08b463553637e9bd2c59. 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/FRX872176729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622df221f3979d97ba3c7eebb9f4bbd27f5bbdc5d7a362fd87d586e6136fab9. 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/FR26V2045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72a55c09d5379cc8582378fa1ebed895882a18768f8b15a3c92c3dc22e26c56. 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/FR59R2251908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cba20ad0b7c51e5fbd1f63e99ecdbb65615933f5fa38a7a76c7bd046375edcf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2251909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11494ca639b044f86441ec54b9f66be858c7f158ddacc13b2434483645a333d. 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/FR59R2251911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f94581cd5fcaa5598fa51d172cf2da7ac535da867b05ffc993eb53194ee83. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2251912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0046146059f5cf9586f67fb4f506588bcf86f7ee6f32cc081aec30dceeffa. 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/FR59R2251913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b0fa2438a880510ba3030eea6001db6b24d49cf3d6367772c9538a0a5fe026. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX53U2076089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3ee2620828fffa1f3f7eece46eb4deff4671c3b5a08b463553637e9bd2c59. 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/FRX872176729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac864034760fb3d4cebfac1d57a1a0e05b94d060e9e28ad1288add806731b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX452114522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ca2fbc28852b9fcd4bcd6f9753798c51fcc40b41684248a328219f1c80552. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2114471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460d824aa200a011644866dbdcc6e94c29f7f007377a1fcaf6e471d75672af79. 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/FR2X42134522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622df221f3979d97ba3c7eebb9f4bbd27f5bbdc5d7a362fd87d586e6136fab9. 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/FR26V2045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1710c4373d1f054d386b9ed32e62da34c08d21beb03d1574d8cc51aa59e359dc. 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/GB2DY2000558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748da2257ebd8b4c196e4e72c52fb4de4686c27a04ebb49e27af3cf60a1534a5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHNA2073711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce1c24cc5730803c0356be0c76104e1670e0bd6ddb0ecd5ab3a3655ece2508. 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/QZHN62098703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c5b9606f23aac5961e8c07bf465c74b9f8c414b24f82e66399dea5daa1d861. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2018634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1af30716bc4274272bf0685b7258581fdb4bdb231217969bb143f38822e6f0. 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/QZFYZ1958006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b6f8d25e854616866a83a2e7d88c981a56e19d4bd121309d34c213788d64e. 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/QZ8LD1912478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44792ae2c45ec955bd6e5bba42acf156c57827c591b7967a6a0cddb6de7e318. 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/GBMA21832045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b02b5e8711152982f13a9438a429b9a8e86bd3be38bf17be9e0943c0c1c9c6f. 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/GBMA21803787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890e2eec8f85d747929291696dc5d265aa728522f2b207ff262a1cc2f4bd16ae. 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/GBMA21803809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b65715b39d3d0087333f5dde1182a63cd9bf6395b2aee0767cb30f45c3803c. 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/GBLFP1848186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad49cb9044ba5b1fc90a0ad991a7ff5e0b8d5c5399fcafb07bc279c499d174. 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/QMDA62108386.