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 0xd3bb8434c800bdc0dff6e6a781e5b61da254c75eaab98daaf6692099cfa83085. 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/caafd9dc-9125-4848-a556-1b6aed13a307.json and https://artists.proofprofile.net/proofs/artist/caafd9dc-9125-4848-a556-1b6aed13a307.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 0xf01fad7123597cf540902b792c03018eafbaefa34231743dab484420d58809e2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:25:06Z), 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/QMBZ92040688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f25df511a9109b93da1857f9f8485d5b86737624d555d6425774b250b5b0590. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:00:24Z), 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/QMBZ92178072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a59b5c2c70ca7c8524acb7eb00371f317150ae5b6d7d7d734e48013762b378. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZW9M2275234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15224a50160baba8ca0088dcf0f9a736e255927780881b5c384110a5c9b1b18e. 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/US7VG2367608.
Never Not a Good Time (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef449101af89121c904aee56b668c0bf899419de7af85f0a4efee9bee6104ae. 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/QZMZ92388700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d42963db3599e5850bd5a4d1d9ba177a0460e163c0c72d368c86359ac83cc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:40Z), 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/QZMZ92365777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee50cbab0a7eded99aee6050c890ec314858c25e01a2cdbb885c7b84a0e54246. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:27Z), 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/QZNJX2394841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe446ea5f50a5e8140dc5d3bcce5d33143d6f1a82079f184089a70a29f05283be. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNJZ2371068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e87808ecee2f496b380bfc98abc81dab4294d118053c4891cff52963c4b09f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZW9M2367068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356c97f34533f56a3760bc85d33572383a67bd33d0ba4dfa4c41c4d29218e4a. 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/QZGLS2306974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a59b5c2c70ca7c8524acb7eb00371f317150ae5b6d7d7d734e48013762b378. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:44:28Z), 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/QZW9M2275234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d42963db3599e5850bd5a4d1d9ba177a0460e163c0c72d368c86359ac83cc. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:05:58Z), 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/QZMZ92365777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e87808ecee2f496b380bfc98abc81dab4294d118053c4891cff52963c4b09f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9M2367068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee50cbab0a7eded99aee6050c890ec314858c25e01a2cdbb885c7b84a0e54246. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNJX2394841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe446ea5f50a5e8140dc5d3bcce5d33143d6f1a82079f184089a70a29f05283be. 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/QZNJZ2371068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7168089032c44f996f19b8a5042dcacb4176124532112ebb74c82ee479d66. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZGLM2471698.