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 0x15203dae8a1c2d5106394de83f04522d828e15c7ff3af9a113b6d4fed83f7bc7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93e545be-0433-455d-805b-5d85aeb31ac9.json and https://artists.proofprofile.net/proofs/artist/93e545be-0433-455d-805b-5d85aeb31ac9.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 0x055c3dcce5c0587e083f190b4729a246dd3bd092fbaca3c538d6b77c8b288f84. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:39Z), 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/QZNJW2330390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71dd11e48920c8b788e6da79b2414f29aeef2344d89d2b13984969cf40e9cc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNJZ2390169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0c8ce157e1cb54ce8e2f44aa38c55ff64c108f7cb379903ae9bb2c9f9822c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FF2559234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bea032477ce5b3aec7b5f214f41484ecfe44c2d4b473908c92fa1540794f5c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT3FF2565839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77fe0ecf1b09a690f1e8d0777e346391e938b262592e11448180ee2fc86fcbb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT3FH2551882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc9835fb4ef38cafddbdcaad927458a2cbd093c4c9e20881626c3905d3848c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:05:45Z), 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/QT3FH2551877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfef7f4a6927543dfddac3df2a2fd0030b0f65b6202688870860491032c127d3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3FH2551848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4169c1117352b4d8fe6437e1a7b488d7ba31faeced25f7b6b03ec86c61a9c505. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT3FH2548901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e098bdafab3161c24502359184e05bb91c4e3aaabc079a06fdb42fbd5b263. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3FH2551893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b6ee6d7f5cd6a49af429cec5afd6f99c59de48ffe089fd957be00929fc03b9. 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/QT3FH2551855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305d3e63c880e93987f165db340f816b66c5e42e80651a41d9ca2f36ed8597af. 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/QT3FH2551839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a02b64415e44b42a7cd062c59942086d85f38248d76dd6f2de138b4a439829. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3FH2551878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4df4436e901d73e4a6be1be7997a9a8649ea7a46bcf01dd5a436db94db88115. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT6E52577938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c48064d8b5a8d56c813981fe6885682f8b9e7ed9dba5d71d91a46f30dd037. 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/QT6E52577917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb356cf26e71d221e0eebb2cad727c752c9b910d50492c234c44f455171c4880b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT6E52577945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01bd637a51d62204deb8e7869b709c793bbaf2b265fa8b7869274c3da9d0b2f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QT6E52578033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6e851bfbd0a5d671b587789318b5add87c54a221b9ccd8097b3598e56809b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT6E52577918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2e26c3f586fca446e79a617e5b6869cfb51a597058aebe60fe3f6cb0040066. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT6E52577927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa6533a78229a196e54b908386d96fccf2c68bcf9461e7b4c8a541d261b515f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:08:58Z), 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/QT6E52578008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0ceb8715a184a77448c4a0a0518a01da7b720151b108abf5af1d38c47fa981. 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/QT6E52574188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16a2b3b22b2c6e729180da7b8299072f06fd02df83e8f1ca12ff4ec5bf7f354. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QT6E52599766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b7f77cf918451f7f745ceba78705135226a15cc085460b36af542154e7ac28. 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/QT6E52578021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e1d24a62ca0017f832fe081919314efccf38b375bc1330ad9d6ba41a2e33b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT6E62533007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d5dc08756f8311be3d9875b73afce2650fffd124d52c0b224a23e70ad9a39. 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/QT6E62537251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e7112c70acaf941b29840c3119de4294f3298bfc3ac4052d200b71466ba036. 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/QT6E62537314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6539c83833441a98e5e91bd77465be4c14e51a1252654d99bad3bb78fd2024. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT6E62537309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89c83ce9418398899bf524281c2c28ab90e2ccdb53c36d670b2571e181bc3f4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT6E62537308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c14670f7ba8194a22cc8274e31a36795ef33f26dc9f699944c0b000aa65b561. 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/QT6E62537272.