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 0xdfd27c57bb7874731f2247b39ca6f66c8de0c7816d8c1a124356967fdb03fbfc. 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/d1bcea87-a6ad-41e9-a3ea-98ff4ac0998d.json and https://artists.proofprofile.net/proofs/artist/d1bcea87-a6ad-41e9-a3ea-98ff4ac0998d.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 0x524c59173dc9772bc45ba6fc23ae45c6dd527027c488f1b1ee8e691775138e6b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBKPL1369961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ceb6438938aa85e6d29bdbb787777ac90309af9d68abfb10327019f8648fb0. 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/GBKPL1369967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614544f5642764a8e9624983d802d370d3b5c89a70441d30aa23e954e3cdd69. 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/NLQ980500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab89a1b7e529510ebed5bf510e3a1a830ba7d7a1c1b9dee56567059ef8633e7. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NLQ980500018.
U Die Mij Geschapen Hebt; Heer, Ik Wil Prijzen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4dc83d78fce3507f88e5caf6519493f1d7f97adbb38422bae2eac9b529e3e9. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:58:43Z), 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/NLQ980500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7604d69651d3b04d5294e36914333af4c1c2fcd50e6c89a122e159d0ea8300c3. 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/NLQ980500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00beaf0e3e46764353024600203d622f013e6c0111976d063899289ef9a952e5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/NLQ980500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395a66a52b3ca84726f5e00998594f9375365b9b707970912a7a1fdceb34fb6d. 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/NLQ980500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3423d56839ee81b20d7c76235178ebe9e9ad5284a8d8f67207a89d9c9127eb61. 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/NLQ980500042.
Juich Voor de Heer - Mijn Jezus mijn Redder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd225d651a2830cfe6bf4534a253dda714380e0d128e83e7fa6de10d182df03. 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/NLQ980500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa49eced80de6f630eb84122b79fe7697cab0fdae65c27063f18d1e2e124409. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NLQ980500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f4b314140319824fa15b88dfabd8ae10687d9828f76b4481988bb7e75ebc0b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/NLQ980500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373639ca3fb0362904cacc1de30efc3d6969b2ecc602903da82702fd0844e195. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLQ980500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2d06035fd63decd5da19572c481108f4e4b06d079e2efe2e0efe170978b265. 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/NLQ980500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511923abd09242de521e6475e97dcb46220ea5565f85f8c86ec02b21bd54edbb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:11Z), 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/NLQ980500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e0597b7524712b730ce0097e5c23c553f89b05686fba5ef7abc5904a9101cd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:23Z), 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/NLQ980500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743c01494237f9ba9c0069d6ad5440bd2f1b4c6fdf0ef59eb9664263b9bdcb5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLQ980500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36861787dc6f5fac2438d03a966cb619d7b75ca3eeaf057b5f8d7c5523165acf. 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/NLQ981100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ea7fe576cd5bd5faef90f34b545dbf84f9666c72eeeeaad50c1b229fddd424. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/NLQ981100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ab254ce72d45e3d328739b479ad5086d3380fa3ab9114661047378a179e4b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:42Z), 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/NLQ981100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3c1ba46cb0fd1024f943cb6b9d92fb46ae0f3ca39b57daaf179bc643b7914. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:17Z), 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/NLQ981100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4087565f94f8d5406435e5b6c29b89db1b93fd8936a1d4d2bf8fa5e7f84bec. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/NLQ981100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05319e3551256155ab5c809d12776c4b6f9dd9b66fba57b0558edd2fa3aedea6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NLQ981100011.
This Is My Song (Live at Opwekking 2011)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac902ee80594d37aa1103179bbefa6ab3fce1d42b8f1dd558e1711477e9f2e. 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/NLQ981300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376d8990346509f4f556d4316df281fd1b62f0535b2b31f221ce3923d149624. 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/NLQ981300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6681a164a9b39629e4d4d4ae930c152e8dde33df26349cf68066b600e490124. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/NLQ981300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0322959bdeeb1fb9df38e7537b92c553fa4a2e986a3c1c44c3774817838370. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLQ981300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c99a1d1658ca07399f707083c99563063149c7f01d921eb33854508455a8cd0. 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/NLQ981300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb89118ef26a27d54ef8353c584aa2607dae94d888c2935146d0ff5595334bd. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/NLQ981300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd558d9729413729664161895fa4efd74a88dd0b4105e4625bcbf143b02ac65d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:21Z), 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/NLQ981300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbedb73564f0f65e7084e52e65d0c873ebe55369352e92af4698356e4b2e0d77. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLQ981300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a687a408547bb1604947bffdb886a8dc27c6c2d3dedb102adf6d0900739a04. 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/NLQ981500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec617efb14502f2e5fe588d5dbfba61bc0ba84bda37a8e333dbc14fed1994711. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/NLQ981600004.
Met diep ontzag: 7 jaren Together Worship