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 0x46d3896e65270431a991b6ba86e0ef92c4035587c8c0cd649484db0edeeeb511. 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/16d9598f-25d1-4e12-8d93-c354126254c1.json and https://artists.proofprofile.net/proofs/artist/16d9598f-25d1-4e12-8d93-c354126254c1.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 0xbe13066b18e227bf5a91a3441125095e701cc68492a5db47d5e7d5c8bf213036. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USASN2100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6085124f002272c64179984a5e412df5269f55f7a91a46ba228155adcce164. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USASN2320004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d876fca97934a038f71a717e716754dd5b9fcefc3e0ce2e7c0a807ce5c93e6e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USASN2320005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eee62ca4a3ab5d9e4fb83a9b390d6d2c866f0a2eeedb616821aa3d9ec9c4a5. 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/USASN2320007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d7d15f5e5d5169bb6b43f12f4b71ed905230a29d07eea655503c74cb6b1986. 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/USASN2320008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a1258c71a1459d3322b97995f7851fc49b8421eec4ac18505d1a5f565ca323. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USASN2320012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e140db8d7403b91aed568e711351b421bdddc3c85a483cf144f96cb14e6965. 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/USASN2320013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4c6849276f600d80389efe90ecf89222191861ecbadfa1729bb08f4c313e5c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USASN2320014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e8e97c5fbe3452584273982501810e9d8b2f0c2ea1791747607b97c723c050. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:53Z), 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/USASN2320015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d340c4610d0a1fda2bcdc196941caa8c0d666c326e1bd5d9c0adfd78490bd5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USASN2320105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d967e9671b0b72735e1bf599db3fae21438a905552cd19c01c398e9337b256. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:32Z), 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/USASN2320107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb117a19f591bdcf9e94c02f6f8a0ab715e70bcd44df14c4181d3da059027f81. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USASN2320108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae71b887d2d533c9967a4353defd93a8a35aa0b6eadcdee48d3dc8195f88bb. 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/USASN2320112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dd59776ac667b506b38c6d1d37d921345907df7868c3f53d7d80a05800dac6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:46Z), 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/USASN2320114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8503e9e748247611f53c679e9af936ee0e2afc780d16c26c90ebc747f7f6a9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:52Z), 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/USASN2420078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7effa2edb982a7fbfb0a1fdb7895347149fca6bac78c64f9fd38a3ed590e2194. 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/USASN2420079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb334724b11c9bac1fca5a75744c5b050311a4fe650dff7c4895914976a9da5da. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USASN2420080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ecbed88c6f6e270ecf9cf99e87045c52265aea04b4fd550089effafcf82f57. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:02:22Z), 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/USASN2520057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c2b881a2c88b0081f9bbdcc0ee049aa50fe27cb16f73ebed9c699f3c6bcdcf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USASN2520060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dcc71529641f0ff3b93b110d6f2bec69a417c0701fa950fd0b6188a948e104. 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/USASN2520062.