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 0x9bd30a168a56f4b734e8c4748cfd6487e3feb923e68eeb045ea69e64e09df9f2. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c62e696d-283a-4591-b1b1-754ed4b7fe87.json and https://artists.proofprofile.net/proofs/artist/c62e696d-283a-4591-b1b1-754ed4b7fe87.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 0x2327c80eb208b8baa01c928206d7e12d71092c6bafba6aa210b4cef6e778eafc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZP7F2463602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f643d52101d030014adbee94c1be522d50e382d600c40067f8cc766853fad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZP7F2463604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec1d118df736faac65d7861c945781272280c1cfce62082304dc117454c0115. 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/QZP7F2463606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce09b54116bc35c402ca32ddb82e89f331ba0d250941d1fd0e0631d3bc0d43. 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/QZP7F2463608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b5adab14191e5f21a0ef1fcfa933d3f28a3287cb5765c9c0bcedfb5715ced2. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZP7F2463610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74344024902e00e532b1cab2af656bfd63b4e3c28943df212f53aa2a897b48e3. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZP7F2463613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8feb7f31cd6b5b1eeb81fe3b88813de3405a7340f5bdd750f981bf24d7b13. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZP7F2476813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1751a642a533957c7026170ff274a67f7df2446bea539d02ae606d13c75f97e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZP7F2476815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9c02897698f8ae36ddb6326dbf8467a99fdcf280c6234ad9c609eee7064b4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZP7F2476817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e32d9fbbc4a5420940d601042a3d9351dd4d21b9f3b0521a51af20694b33a96. 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/QZP7F2476826.
Relaxing Ghibli Piano for Peaceful Afternoons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d5351a518e76bbe8a07cf9ec3727c7f563b19e0c4bd8004fd6f17521f35586. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZP7F2575040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f18d72d95cd26f94e1298ac991fcc3e705f82bc8016a411202bbed0df84e970. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZP7F2575041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2fac4024c07a161acb26b7bf103de431a299d107181358fd08c06c4ac891dd. 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/QZP7F2575042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98505cf129577911b1f8fb80a7e571067f0dfc0288b137b36b4ead7102573924. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZP7F2575043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ebf9a9d23d05615229533fd1285b0ce981f102b1bc508facaed8b06c5f5dd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZP7F2575044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af747d15cd48631664d42f301d2057b76d71a462a4ad5760c7109033404329. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZP7F2575045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b376634b8e40ff224b74175821815cb43b20a1076837ae92228c87d7087a3d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZP7F2575047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ca741601b87853f05ae1271c40865782315cfc37f9482e84ddc8f8fcd0c28. 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/QZP7F2575048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d53cef8dd7abdc3b2f11d9a49befffa56252709fc2dae03c0709e542def881. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZP7F2575049.