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 0xc5fdae94d0b60af2ce5f709395cfdbe4099f0a99630784abc65c0e05083ad66f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a989d5a5-6157-476f-93c6-9b9c756ac761.json and https://artists.proofprofile.net/proofs/artist/a989d5a5-6157-476f-93c6-9b9c756ac761.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 0xc4fa1646c36ce870295655c63afa66d228c42a3dca61dcc654fa8d18ea6db2c2. 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/JPG401400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b7796e04a53b00b284ea8ab3c9520b98e07d705006e821df78543e070f436. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPG401400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fa1646c36ce870295655c63afa66d228c42a3dca61dcc654fa8d18ea6db2c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPG401400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f1137d485e5e369ce1ad4dd1dfde0182dfd1b9bccd450a4a29f79b929bc37e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG401400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e13530a7bd36ca5e6215547c1beec75549b8e8cb194b9a63232613b3387f65c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPG401400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a852c0ecfe63cf3efae0266241248dfdfa0fe4dfbec8c6906b4fc1e1f60e12e. 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/JPG401400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65d9086a8adeb23e52f1fc107219a1d9977b84494cac469b7d73fd567e36a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPG401400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7603a8be31c5eb19a3c36675de9ead3cdcd44aa998fde9c8bb29ed70a3b2faa2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPG401400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17364286aa17dc4e16845fd70bfbe74548f83fb626093ee1b7b76f9b72eef67. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPG401400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5449d51c03c5f4a68cbb42dfaa78efd3c0c9c9630c299eb0a6a85c6415f553. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:55Z), 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/JPG401500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c263025bed76355bf327b759d83647eebff363a9da982abf18bc097902958bc. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:01Z), 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/JPG401600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b40de678fc0493666181f96bbb86bf2f3e7f7ad211f51af9fd089c9ffb239d3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:29Z), 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/TCJPG1742646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b16616afcd54cc550a47fd62484d124a4a85ba5119405dee6249a918c29807. 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/JPH371800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3badefb8c3b4e4b49fa5538b040df3dd1e6a475f1401641903e5f6073dd920a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPH371800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b951faa655a1c76fe524bf8fb80baf06700adca1c567af562480f6ccf91700. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:02:42Z), 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/JPH371800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79a0516eaf72eb80b5f5e4c78ea8ab5670ae69edd180d7996e8ea726b25c18c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPH371800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3149a34e926f99d1b49c607dc2cfd400f365d41b6cdb9c5d33bc58164fe7c4d5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:13Z), 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/JPH371800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981092e4b5b262119c159dd0bcdc941a9991ecf2172bb76ba3adac574af6b111. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPH371900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa4f2b02b936d1e58ae812093637a60348e20873ff8cb5274288df6d2967f7. 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/JPH372100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3eabd317b20fb378b4c780f1f5d8a8dd61e786cfb8e82cb3e3fbb6172d350. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPH372100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6410a34bbfdf3b97924cbedec7c3bb470187d4eb46a0a961871f9dad983ebde. 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/JPH372100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff74e52ea938cd5f2c5d848fdfa2f99ff947d8a24c627f7cf317cf788790d0b. 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/JPH372100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a19a09a3b193224dc5c08142d556755743e99f16c50dd67bf631605f88013c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPH372100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521478c5aab87beccfb1291193913e759756bc5e6604f649d2ecff5c2be65ae3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPH372100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf984146ba3b761fcd939ae0efc54f4ef00387175ea438b73addc113df678d33. 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/JPH372100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaadc782f3ce7c2f068f0371931dc22c49a47ddfac37b501ab74233cd977da0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPH372100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71543235e3eb1da0db3584de4185a14e39622b23bb28f5b4dc3e2a29eeac457. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPH372100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e1a777dcd8fd2246b5909f47570a77b70daf9197e44564ecd02e2d08f4fc3. 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/JPH372100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c88dd30ceeb84758cb324b8e90e9fc0be978c8f2cd95fa94d46526e09251b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPH372100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28d9e3aeabb2ac74839f45007358e7f2878882f19f72c1d79892feba377ec5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:09:52Z), 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/JPH372100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430b0e17ccf8aecfd766e048026cfecb62b2b583bc7a0dd7053ac5b951fa1a6e. 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/JPH372100127.