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 0xf452c7c7b67ea67f58744f5cbd81f863f809b453cd9c3a5b5743ebc2bbe15a59. 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/d04608dc-30a6-4d6e-b745-efe0947486a7.json and https://artists.proofprofile.net/proofs/artist/d04608dc-30a6-4d6e-b745-efe0947486a7.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 0xc55477f59c19351daa1a8ee30415d36db3aec91c08cab6fed332ad3843c24dfa. 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/QZTAY2346164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd33bb1daad072154124b5947b494c74673784af4db1a8f9665201ffcd8a64a1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNWY2336836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c59e73b73d3411ca1912c7bb4fa4c6c18d60802629fbfaceaf1a4918d094aa. 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/QZTB82371082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aba3afef276c69becba19366a965a97ee41a880c9bab013f6f142b0b022e11. 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/QZTB82371083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd112bdf75d8b6b7c22a70f178b58d333aec7e7b92ea97823644e485c0de0b83. 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/QZNWR2339568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bca676a6c6ad3a918b6bae5a21fbe5f99776308fcfb895020f3c64e989c1c90. 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/QZTB82371084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507bc7eaf4882917e18b1f6c9f2e27b62d4cf0be55591a35f91fc52cf7035509. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZTB82371085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a98767dd2bb3e713668d19eaa5b99afaa56d5b81c397490f7dc36e8638f2bd. 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/QZTB82371086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2933b001ae7007a3abc8b85f376e0419c73738262f9196e118ae4ece7a3592f8. 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/QZFZ72258691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf712428c3a7c68781e4b2ca2be0b71e32e51a7a995cfab5591116316622cec20. 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/QZNWS2454213.
Your Love Is Simple - Chris Howland Remix
Your Love Is Simple (Chris Howland Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b61ba71714ef42f0e04ed35213c4678b8dcddef275af1ccf702ea39d08ea36f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA82143060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8efb68fa3eae8b76f96449828c95e1dacc8f4e55d0d6b5fd36475615059615. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZHN52358681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4ef91a88e94ea3784063585f15110480c341f1ee12087e9bf5381c1f6cc50c. 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/QZHN52358682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b76f30d8932a4dffd85ff8078ff8673d72b78bbdd278dcfe6a028010c7cf83. 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/QZK6N2315897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb497abba0c6593b129899e23f11c61a07998f33f463b04759b0b8ce68de812. 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/QZK6N2315898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc709ca65b623bcf8cdb76593db186b93885233db84643a8ba12c0516d3c0fb7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6N2315899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a3d53a7410b64f55254ad8f5ee1a84955f0b60ae6de7c3a9eb217328722af. 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/QZK6N2315900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69db9902e13f9c0328817ee141ea012e46554a4ed42a87c1814c1a693e11a8b. 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/QZHNB2366680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9e0843442f0c7eabf0f4bed78baacdf919a3d37fab17bcb5e34025273f842. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZDA72200610.