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 0x32fedc4ce3bf2d16b32fb4859f7fe065662c0b553919ed5e9cc0ab463a7f3785. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fd6e794-d644-48ad-808d-74b9c887ce59.json and https://artists.proofprofile.net/proofs/artist/7fd6e794-d644-48ad-808d-74b9c887ce59.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 0x972455d366d4c9a4437eec8a8addc140e1fa2be4d899bc7d75c8c88a096e14ca. 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/TCAJF2571680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f8946d2ce80647df48f7ca0da1b042fd5006844edbca93cdb0f9602e703c64. 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/TCAJI2508911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71c0250ed7eda5fbd98a0bba18411d3e980b484ac55360ae3a08c85c982dfe. 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/TCAJH2508951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7891fe9b04b0561ce5dfc86b895598b52563e7773845d0b5eec45583e10f7bc5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJH2508969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa226215dea7c81ebc1a5fa998075063ad92a45087fd613104207a0f95d0bfe2f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJH2508995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0aa749eb46afb054f872f138fc920a4389746d5acdb068b27bf898ffc463d8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJH2509006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bed969a969ff1b59b7e8020ff80f97238eb525b2bebc2fb6296e6bc539faeb. 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/TCAJH2509017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8451e4a54ab0fd5bf4ec7771b2da04c70eca974e14ac39eb0db52bef04e595c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAJH2509028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337fbe6eae8a1ba646ccfaeb8aa324ce6cab7300066a5470a3b291f6ffd9c61f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJH2509037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b1d6ba880e346546dacbfe38bd8cdeb9c01f4af7cb9948ae25c03df7035e41. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAJH2509050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbae7ad291e5e3d473a949760edfb4b47f5606559b3aee644eb900075eefc13. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJH2509061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7457aa4f3a01fd521ba26d6734362d55e7d53eabfbebd6fbc79e7ca37ea883. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJI2570286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b422dfb2522446ee7bb4aedb22dfd78e59600f6bb10eae88600a7381929a3b. 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/TCAJI2570298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e06340bf2f56be78aa4414fa9e80d323d9e3c8d609655f83d4893ed4796dbd. 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/TCAJI2570313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d155717c09c43c1e1e7b506a1c1fef3f1aef794d2d7e7f6e9c49129a05f5188. 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/TCAJI2570327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fff25d8a780fe4c85fb6a81c9e6eaf8931258285f04cc398d4525bc874744c. 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/TCAJI2570335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74252a69bee533ee9d39b5e7eb51af66d909786ad6ceac6eef25bd89baa1e86f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAJI2570345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c991202776756c03469be0ebe1c60e06eda28f4a8f7928c788697383c73caa. 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/TCAJI2570352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63ceca99d654cc54c0f4319562f4e257a4ceef2732d2406777837fbdb0ba343. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAJI2570359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb009bf254f23dc226dda81b6d28c3d744edf4c1b9219c05008480fdc019fa. 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/TCAJI2570374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15faa3e16d4845c845c6791e3d7b2becd2095592a0acfe75b1bfa181a87dd462. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:31:32Z), 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/TCAJI2570379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3d99369bbdf8ee66f9398ea7a354e85730226d35e8ae96be90e4def7448ae. 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/TCAJI2570391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee260ebacd0f3ba39c42c0e9d495e4a03ab4a06b93938b44807e702abbf888. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:36:34Z), 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/TCAJI2570400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07cc72c95067b2bdaf1fcd4b6573ef875004f77d97f14b5d2ef52a2f4734944. 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/TCAJI2570461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f97346dc7e387e9f300b8448af48c57d4389fb5730a80c99535429a2b9a55c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJI2570478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0c24a9cc821467e2be89d4a6613c6f1cd0845530f8dc10551dc02da914d5cf. 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/TCAJI2570528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430d6f12c8fcfd90c1d4a868dc138bb84aaef884c56027ff6ee76f8396d12e5a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:53Z), 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/QT65W2581886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fc18906aaba0aeb18854b2cdd19f5999f164631fb1a61a212216aefb75dd1. 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/QT65W2581915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee415d022030a48f0c96e05657f48cd7f4807b9c87cbb755ab804070080ca0a3. 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/QT65W2581931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2731793c036ebca8fbbadbaff4a7bcac045c54419044ad486ee961daf2dad3b2. 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/QT65W2581955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4d018808fc1b17edbaea48c10506331be086e75d2f0ef6a84d8e9d2edc0d14. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:41Z), 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/QT65W2581973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a47ba3a2b396db2ce25b0234889a391ba54f37d556f8fffabc6615a66c96c7c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QT65W2581994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45514d636f8200749d30be6b9b3edcc0d104c72acf3da735968d08b71132456. 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/QT65W2582009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf152f6d6444c6d96ed0ebe12fb260845c057e03cff9a1807a0ca037e458622a8. 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/QT65W2582028.