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 0xe2c28b510e9987170a1985d4085b26ea105b1b9b74c8bd5fb566f8346af841ee. 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/55a81c4d-e228-4cd2-a05c-6e5b2928c80d.json and https://artists.proofprofile.net/proofs/artist/55a81c4d-e228-4cd2-a05c-6e5b2928c80d.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 0xd491fe2cecceaf06dd3e291c72943bcca9980a20647cf0c47ac777be2b1452f6. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCJPV2380249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abdc3c6a45503e6b46a6c9e38dbc915fcbd791f17491af0f01f12b81715b73a. 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/TCJPV2380254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f58a6a568a72219d84a17e2f63f94a667cfff65f0e760ff710bbdcaae8cb79. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCJPV2380256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d006dbec0d7c61fd1ad88d10433d45c095ad8f9bbf6f0d03233fc0bf4d2418. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/TCJPU2375178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cd7ba14cff64392de09abd350cf609d8a21e4b32ace8c89628ca5f7b6b089e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCJPU2375188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe93fe561697023c8c1cb19ce4fd3e2f6f67a42cfdb657d878da1094c9becb10. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/TCJPR2259687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ffb966c62e8251b20f67de00d2b3e4b72a8aaf2d8f4eb130da1556acbb62a. 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/TCJPR2259696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d39eca3464010a8ca74a4e5624f5e1c857852058ec7c762209a854167174cb. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCJPR2259712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7978328379d9351f604ea7fdfffa8141fe4fa27dea03f70e4364285d87983d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPR2254661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0634c4de9f546110f6b7a2366fdd8a08653db5eaca7b3b7aa6754e790af2ba0b. 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/TCJPV2388827.
13th Anniversary The Best 2011-2024 Vampire Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa38b830913ee041b99ebcad1637373d9564c65a6fa9c810c1735135cdc2ffcc. 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/TCJPA2432174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6007057db613c9ce66ef4124507d1633c8208e3cfe8a2efb5d63c001b257ab9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPA2432208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec300c374be260fb3ea564d4459b080052fb52527702233fb026daa7f8aa1e54. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPA2432228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1bc1e596095ddcab91180bd6a46680b759832e442168fd27933553d02ec7f3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPA2432311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14986db94c0cacf27d6108c6429d11364b0c11a66e236a6f15b841a6ce4352d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPA2432318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa0325479bf0d4765719682361f8f227d71bc8efdf0072f331db8daf85e565. 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/TCJPA2432968.