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 0xdc85e3d40f10df81fac7d879c5d00453a774b711dfbca038b82ae4b934ad0021. 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/6453399a-d258-4dac-8429-dcbd5b4ab06a.json and https://artists.proofprofile.net/proofs/artist/6453399a-d258-4dac-8429-dcbd5b4ab06a.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 0x76bf7a93ae78d3ea41159bbab364d570ba18b58de406ef0f71ce08a9fb7e3464. 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/QMDFH1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7d91e555ed5a60827522484e781a98b6081d38e095eb2e391d60b36f66229. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMDFH1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930a23ae8903a05c3b02d3e3e0d31422527a8f26a746a122032565397e67e18. 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/QZHN71992251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8d02e5c4b6c4ce40b81feccd3ce123836b142a4f5f6c604d887c8ccb2b358. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMDFH2000009.
The Ecstasy of Silence...The Agony of Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633751c85a1536278920a73d390b899efddc52c52d88deb51ac0311808b528e2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZHN62119251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1a655279a16bd5a1e17f4dfe32b1222258e7ac0e6369ffa1e29f2b4f8846ec. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMDFH1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b02b8cb79c25a50c9f960e3b7e5fe173866aa88291127a7d647a84604826821. 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/QMDFH2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe5013d30f9a0b735823af2182c8df5ea4afcd2181154d11d60195ad21c4727. 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/QMDFH2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930a23ae8903a05c3b02d3e3e0d31422527a8f26a746a122032565397e67e18. 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/QZHN71992251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6a2dc16b85518eac9025c7c7dae62e3c049022643119bdf45593d0b465e3da. 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/QMDFH2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0522b5b4eb2cc1ef34a693768d30453b9ae2a967a45b9085619f304314ffb587. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMDFH2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43607a3d7ce9bd2f470c48b876c6086bb896c1f2cbcbe8ebb63e1a98a57edf5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZPLR2274537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6a2dc16b85518eac9025c7c7dae62e3c049022643119bdf45593d0b465e3da. 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/QMDFH2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d759724484b4cac46eca014558b848843b2ae84be2eba5de0e9c92b783fefe. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QMDFH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d759724484b4cac46eca014558b848843b2ae84be2eba5de0e9c92b783fefe. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMDFH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4273fb8ae9c1bdf7eff8c5b1ae321cc99e3182fb7b14987c2bc289213433236. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QMDFH2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95999ba30cefa75b13a2a3943f8d2b209a40242ecd2875db3826a58d4fe32047. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QMDFH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8a9438f41e30058b3e513ed872f9f75139f9bc01ada5e45b3edaaea4b2a99c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMDFH2300002.
Time's an Open Wrist: Ten Years of Mammothor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb62229a0de5d65e86fc48802781037a3afe1390f119dc7bc37f9a74aa8a7c3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMDFH2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d759724484b4cac46eca014558b848843b2ae84be2eba5de0e9c92b783fefe. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QMDFH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7c564717e0963bb271d91ecff360aeaf1848ccac50cdc9925e492e11752a0. 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/QMDFH2400017.
The Ecstasy of Silence...The Agony of Dreams (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272caa2357fd08c8a57f5756476478b7f045ce88f8d72470b2d6005f3eb5c633. 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/USL4Q2451933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2108953337954205211b71849da53347cb86dff60463eb580be7cb29d9392. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMDFH2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830f5094b1a50a0b109855b72fdc5cb898f3169fc5a151291b6e0e3d1f3b911. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USHM82426292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb62229a0de5d65e86fc48802781037a3afe1390f119dc7bc37f9a74aa8a7c3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QMDFH2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6a3bc229e76a8988539686f85f4e8a71e3b69a731fd6a11dd262aea759235. 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/QMDFH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2108953337954205211b71849da53347cb86dff60463eb580be7cb29d9392. 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/QMDFH2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb62229a0de5d65e86fc48802781037a3afe1390f119dc7bc37f9a74aa8a7c3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMDFH2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7c564717e0963bb271d91ecff360aeaf1848ccac50cdc9925e492e11752a0. 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/QMDFH2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef509abd023b8c63e2afc0ea368fa3487638b964191114ac3b58f9e356e7f81. 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/QMDFH2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb62229a0de5d65e86fc48802781037a3afe1390f119dc7bc37f9a74aa8a7c3. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QMDFH2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032c5942cf7ed45be06bfedafd0a06f38fd519eb0b201fe65f7d9500b9e777b7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMDFH2400019.