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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb718a6c5321d2c69c2d5d44f7039fbff8bc91c21d1115287d22bcc126d4d5d25. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b246f22-7df3-4533-a863-379ef74dc014.json and https://artists.proofprofile.net/proofs/artist/3b246f22-7df3-4533-a863-379ef74dc014.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27e4f87a89071f3118e6f6c49b24201ac9100ea56157db2d5660cf17e5c52e7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DELJ81819957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66e8b43b4f970fa68ed7bdfa6ac3845d314793dc65c7564e1ea07676588bb2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DELJ81914649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2261e2abd20dec33825471f57a0b707ea9f7728365ac75d308b22b2660bbc3. 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/DELJ81943347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db35edb4619ddcd8b94e7271cb22e454a692f8c324a858f679eb571285deeae. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DELJ81943349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddad227115f3f950af3d471077e9009445d9fd6115f05f71fa9abebf0b6fd5a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/DELJ81939621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b26cde1ff4efb956382364b7f68a6a4970273c87afc69f70022266639b523a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DELJ82016314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a57a9958f58d6a1932a5cf63c40a5a94fafaadf20c50a50eb87456426cad02. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:12:15Z), 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/DELJ82069391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005443799d645728c21b712019e5df218531545e9b75e851f2d6413e2b914e6c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:12Z), 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/DEZC62037906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec2009fdc18899bb784cd24cec08fe1c466db1042b1a67583d577fd3ce3d019. 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/DEZC62174935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e208bab9312cf4005b931d0837efc364ba394637ad9600305716ca5a158e54. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:09:14Z), 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/DEZC62190343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17c14e9fa69df29567c3f7b30721cf2761edc628236be8be47a4ae21e7386e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEZC62117396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84d6164dac5d895fe1067775a36b2a9e0aedb2fe8397d0bbdc398dfb3ff937. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62127788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6ee42a80933642ad982d5e92cd1a73502c47cd070cf5f602712aff843f15f. 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/DELJ82004427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6659e09fa5c0fca0e1832f5b3b926c2c66201a6802d7e2192ff87dbb9272b84e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZC62319135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c002250f9f57b390c17dc6061eb2ada78fe8b8bf23b2067e0efb352f73b1526. 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/CH7812350633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdd849d6e918af306338be4009fdb3049128951ce3916ab1b47517b3f43db09. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH7812350634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5663df7544adba776274ee3392335103864763a8036054de053a4996131d91e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH7812359023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b39d90df65a6c99ccc482b72fedb6276f33c8b33c36d06403083528ff59d5a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:06Z), 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/CH7812413697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfda0b989330446956547aac8fb453554441a2dc2ef68bec15e5938724664b6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH7812416498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b45ae7b4b6f1418e354f621ac5096e91c741e33d153914d2b9ffa5e342c2aa7. 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/CH7812419704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8f90ff633415571a23df4c7d796fb05ee1de0fff46176ffb01b99cf6f65cdb. 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/CH7812420791.