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 0xb544b1cf087227ed1c8b2e86c9026686123b16756560ac7c8928a4bf3eb43471. 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/47b7d0da-1fc8-470e-87b3-bc615562871e.json and https://artists.proofprofile.net/proofs/artist/47b7d0da-1fc8-470e-87b3-bc615562871e.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 0xa7f7911387cdcbca87cd11731d1b03753f74262a9eaebe15ca189bff335ff8b9. 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/SGB502205384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfdac63e4e22964984d8dcecc79a5f8ed6cd47d9403af95732b5263c0355d6b. 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/SGB502208576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8280dd891755963415c03feb7420f79bd7a3b38117b64622cc4bb249debd7332. 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/SGB502224161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328b1cb39bfd5cfb1048b03da4bb66530bcb6fe8b1a28adf8f1fc66ac2bd938. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGB502224529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1c961707eaa142d8cd2cee4314f7c518ddda3ca6d9bf96439377e848a3fcc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/SGB502224163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb513b74527ef1b25bccb2976897e6e4d3f151e8a6ba23e56cbcc632b2990664c. 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/SGB502324978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e79a0eb6602092a8843c97ae012f5b8e3e8b73c4ee7a33f0cd59970ccb5211. 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/SGB502334340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e60c501594af88354081659f4fb8200c56be38e3244d22c842dbca3633c8fd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SGB502334344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c463d048d2a38733152f1465679d9abd423037cac3bb68936bc07427eb14d3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:45Z), 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/SGB502361412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2970e97e238de97e7e4a44239a4156a5c47922d4363110aef5264885a15c602. 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/SGB502255902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa2127e084d7ebacb57e7e57ac9e138d506054c201b20467028623e0ec9b14. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:47Z), 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/SGW502330971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd691eeecf7afe691610e195a65021f7ff217ad84b38b5071672cad44023f9. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:45Z), 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/SGW502353325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f371114561f8ef755245c9ac0f0226296d5e9010da494e3d4f476ed2c8191. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM4TW2487267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf889f7eb2dc071822d373560e8f3c8f51044c9a4a33cf54963ccc628acc1ea07. 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/QMDA62452341.