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 0xeb53a3fe9d6d3ff20a704ffb3353caca84e0e771ee153107561840ca3215e1b8. 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/8d12a01d-4fd0-404c-b78f-c6abb84dc0db.json and https://artists.proofprofile.net/proofs/artist/8d12a01d-4fd0-404c-b78f-c6abb84dc0db.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 0x4a6283f1cbca913f019743c6c8cb4eb8f14295e4bb053e59d0dbf35d70766a7a. 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/TCAHY2435395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63262993a103789f225d3792264c6b38d58eef87538bb425ea9fadb7827cb609. 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/USUYG1533994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51462d110be62cb9f0d0a2861e8c68c659ef6617fab92f9d8966197e908a9840. 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/TCAHT2450745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48a203ddfa922e44b054724d5a1a8fdc11828c39ef26be529951ff6ce5b8810. 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/TCAHO2337691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87347bbb40e1651bb6e865bad8c9b6efc2a57c69e6013388139bb7b478e46d35. 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/TCAHO2377720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65318df74c92c26db0cffe7ce0c3fed259cf999473616da507ac73829f2ef8c4. 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/TCAHO2384141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41ea3f1c299e5744fc5cd9d100f365e17ba82e82bd4481018cd345ee6d7c3c9. 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/TCAHK2328750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d7a8a36087a2242e62d44f08bfd5155296f0902eb0049a04bf5affb7558691. 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/TCAHH2336120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101236768d51dd1b2cca8fc5d5f9377efe44af0361949d35871c175c0d02cd63. 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/TCAHD2301552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d34e7e817cc34de918c02d2c82438a944494a6618f0556f9285b1c134488e. 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/TCAHB2320622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acac24b637a9b1ae22da541124c159ad4ca011269f6d6b90b9ca7c0a6fdd91f. 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/TCAGT2308783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94263174d5765598e20850b6b55b2063f00229572b5a0dbe732c02ce50c46dbb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAGP2275432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a4f217bd65acaae528b292cb7b2f3504931bb001a5040cbd259e94384e4d5. 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/TCAGJ2281835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872b962ec3ba897a5a43cc374346458964eca92b767e40a0c4a1fe8e381c17c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAGJ2203410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ba008dcaf1b055975fd5604c4525610cb173e916540484dcd85918d48f64e9. 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/QZNJX2445125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63262993a103789f225d3792264c6b38d58eef87538bb425ea9fadb7827cb609. 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/USUYG1533994.