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 0xd5bf578368fb383ce98a91ae6059f531453b9f5bcac52a38830f65343585d3b5. 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/d95a6a92-b038-48e2-bd3a-5848ab1d4c70.json and https://artists.proofprofile.net/proofs/artist/d95a6a92-b038-48e2-bd3a-5848ab1d4c70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cowboy Billie Boem En Andere Kinderliedjes
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 0x12782e6bc066e99159ff97f1b805bc70944eaf508d3a93f838ae80e5450f049f. 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/BEJ019600558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6889ae67c3d20131c78d9589d82d395f8ba6dfa7d7eb4758198bf6c4d20a3a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BEJ019600563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ffe860b69b4b5cc07ecb2eb2fe89b38628bd773ac27c09eee741d1f71f4851. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BEJ019600564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5981d55961384befa41b29c8ffb43332ce3331664954068c8f9c1554130485. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BEJ019600557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfedb0f83e1b2642bd7ab04010de4a76545cac243247f9aa33a7fe4f2f581acc. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/BEJ019600565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542ff6e09144fe648203bd1b87633d34f0ec2c971823f93cafc33ab196678662. 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/BEJ019600567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34d37f53162af9550669d4c09ee8b672e197dd7ebb980aed1c9e7717c5fd4b8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BEJ019600570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae99159386f03e7c0c2a18b6fa1523fa1d9ac83c4754435f86414d2028c7e62. 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/BEJ019600571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc036e8ff537141eccc0f03500ccee1c75774db8362c2d0629cf7ca06b60ce873. 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/BEJ019700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90496572ceaad23828dad82c7b956dd97fe49e343a1cd56d5b165b003b187bde. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BEJ019700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aefe0b56372ba928a91b8342f50bce961df59ef26e1efb013285b96cd0f9e66. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/BEJ019700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085d70088ef9b451bf0292aa949c21edc30a3760a91725144a34994244198342. 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/BEJ019900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7451fc0514d65ea5dd5f641035f566848ffb56bcf6330521ffa9452d5692418. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BEJ019900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811deadaa92aa761100c6a7e7490410f8cf6634eea696e5ba00a6ea7bc2ec8d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NLA240603793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46341d5850dc4ec542d836480159431b12bab820e9161f4e62c58435b369c3e5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/NLA240603791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53880a42f835504bfd2c3879213262b3bcd3184f69d79fd79d5b296555d00c. 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/NLA240603794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216397f0a7379a79202cb9e5cfb2a8e225628d3027481ae764c1d466e38056a1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NLA240603795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7ec804067e2b6478a7b3fd34efe063f9029dbcb4ccd276c22da54e777ea2f9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLA240603788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331ea20cb77af156690d3ff00a6a5279b21ef545db380e9d335c3e08ce81403. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLA240603783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a084e2a292c1fbe8246f18d19c1428bf844fdc6d960706a704a644e9c3a7dc2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/BEJ011400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f92a9b419eadec662bfc2c5921416baae23ba1c6821ed125b2cefc7a22add5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/BEJ011400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a74b4492a68c2406355068909115151afd20584a27bfbbe57454722e3fc05b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BEJ011400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f185aec2ba6b1dea26f3a3e05e98ed16d425c9b1864828b964daecaa3bcee. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BEJ011400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed36e78ef841d202740320873c6cdb9efb6aac3b768835bac57f67f5ca985dc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BEJ011400124.
Cowboy Billie Boem en de Circusdirecteur Op Reis