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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05d90c849aa9df63f75c244679c869588f8b3ca9c8425f188eb888055303da. 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/e6b1a542-b511-4059-8714-59d2cf1993f3.json and https://artists.proofprofile.net/proofs/artist/e6b1a542-b511-4059-8714-59d2cf1993f3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee5752bfc1b7a5fe0d494fdb3063c424c5ec419d0b7901e75704bc8a38bf92f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USHM91869446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5233327f391a71f3e17e65f301ca210d64536f3ea60efd5ba382ed10b28c5c1c. 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/USHM22454863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0997dc13bb23b4fd150e9750267b4e4ea3f334daf33603072b7d1fbc9f44fa7. 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/USHM82437482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4adbf9c1fa902a8d920dcae3f85b1fbdd1b7ed8770da7b9c07bd7e34c2d868. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM82448630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d656ea57007a1ea27a2b923dd09c2a0f388dd546a1d44b4d8cd65b57dda870f. 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/USHM92468207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f75c22776a22d067811cca4ead1583f723d5eb69bf56da9afca7b3e6daffa. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USY242405569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb598765c29349576820887aa47652e59bc08b18e11ad53f3a996c4620a66398. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USY242453220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dbe56bb314b9aa0c18aff0d4c50789220f423c0f8337aa2483c6a2052f9c7d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USY242453774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a29a9c124a08b9db5e7838725027ea47f0c0a7fc3dc7eb4fe3d5d8a44364b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QT3TB2401402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5970489999ed57798fd79acdc41fea3e78dc1e216723f243ed62471981ae0. 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/USCGH2510065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333545e9c11f771f1af9233204381c7340bdd096dbdc49d5eeb487d1a95e5ebd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USCGH2597984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e17fb34056380c04a9a6ad329b9d3f34f5203e0a39d643a0f1e3a8136ae3efc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGH2597985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf713578adaea6fed0eaca5c42e9df118fb791510abeab5078dc87acad29a9e1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USCGH2597986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec393c0977959af4d73fc4c1e81d91558b4c570cf91d29c2cc85299c48cda51. 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/TCAJQ2560032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf31de2e7e11b8f5673b3c3ec6e3c5d8985816519e06147be88d173f203b9cab. 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/TCAJQ2560079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe605fd75f08e43d8144c9915e617c83397d798fe8f659bb050829c7999b2d8. 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/TCAJQ2560113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd36d0a29947aa3fc5354972697091a50e38210d7ee835b754183b4013ece0f. 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/TCAJR2560162.
The Houdini Whodunnit Traveling Magic Show
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3607b470d309eacbb1e62a28da734fac00a9078a68bee7a259dc8f7cd7d8fe. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAJS2560196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9113668dd19ae3d0716fc266a48d3a50541a57f66c4a5d2040487d5e00b1d8fc. 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/TCAJQ2599230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9173ea0408be20e30746292b6b62befe19d97489b6bda2854dfba515d74cd56. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJU2508173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11956b0a8558a645edbe60aacb3e1f6f5e0deed6d2c530380bef9b355a45d0b5. 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/TCAJU2508194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbfa5443ec1d1613ae79a14d6785510eeeab1616261462261314d615245d70e. 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/TCAJT2508214.