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 0x0c23c3792f7143a06496ceb3539e220aed0c3acc774809df85d85e4cdaf326b0. 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/474a81a7-012e-4472-a62c-294d3535415b.json and https://artists.proofprofile.net/proofs/artist/474a81a7-012e-4472-a62c-294d3535415b.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 0x3d93af60232ee25ed6ac94ec448b1f4b13b16883871cc7d0bd9c038f5a69a59f. 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/TCACN1644712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d9a7dd22a881a3cebb332df68490ac5d9125608cc9564dd7bfd62c1202a406. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDB812200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93f012713c16d3c196ac2a7f6c02a3feee37d83c468c99a5002171e58c058c. 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/IDB812200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1221fe3598edb838988c32c164aadffd0f30d6af8cd3a6314ae14a3ceee28137. 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/IDB812200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa086d21edecc8d3ca76427a8bdf53e212d432f091befa252e841ad60773f94a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDB812200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe3ac08e00cd8b9b47f81f259f81c6ad7828447291275234b9525c615e14d27. 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/IDB812200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d5da219049175744e297ea4e5081b7a291644253a9ecf388a957a6af94ac40. 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/TCAEP1905126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2261ef156239d3a7b48a5c6934af94730c7bc76b811552bd2c71395308194a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAEP1905129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a958db2863177f540a5f433de14f5db8613823a1ebd00682d3ed68ec0f55c9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAEP1905132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5972e5b8eba563bf5f09c2d2f676a786e2b16ba422fd379326998061c8e9a67f. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/TCAEP1910944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4cd2adebfaf590faac66884f751a1c4330b747280ed214ce7f1142be50230. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAEP1910946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ceb84943481048bbb9f97dd3062c4c6d2d0312805febf002b2f1e11afc2b9d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEP1910947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe41555b0bff36623f321531f6bc839c5dc265d9f8dace61c71507815761271. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCAEP1910951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36b16e6c921012373e109fbda95c0cab2586a50c3fa31b15fe6120479f7248a. 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/TCAEP1910952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de8acede618d2c93114ab88a36c09818f19727948a3baf0cb309a7058ff7489. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAEY2039641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35555b05ee2d28e4ef02594dc277f331df1e7317d04a8835ba27175a04db3c. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/NLRD52019600.
Far Away From Land (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330e51077ff404855bf7dd0fe82677ed52fa1fb9a9228ff2dfd38539b6b585f3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZRP42292599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec6158dd8c1db733648334c23cc8e0c725139a62087b1d52a9c33ce5b9ab41. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZRP42292600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56ecda0083c77780f0e3dc2f03ba6617bca721a03d1fbdb764336dac2bdc29a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZRP42292601.
Man Upon The Hill - Live at The Sounds Project 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fdf1ae5ce89abd637b2fc324deef2ec4d8d4b10704faa0a733833f73c30702. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:15Z), 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/IDB812300060.