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 0x63d382a3438bc4227673a39a694f0418aa9cdd2b47811a14446a38bc00f0f882. 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/691c65f5-1fdb-4855-b862-eaf0a91cc1d4.json and https://artists.proofprofile.net/proofs/artist/691c65f5-1fdb-4855-b862-eaf0a91cc1d4.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 0x1ca860ec24f38777f0712c886debc50ef6689d901b9065a39a161791a4abf550. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:27:53Z), 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/GBSMU8604982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff4faef1854b40e6800ca3aaf9b8a7f104be91aa1d0bf8c54a6106f41c23f5f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:16:52Z), 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/QZK6G2047813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6253c8f80de5a7c03f3d7f2b29f4c573f61e7f3b6d569ea902616f46851cf286. 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/QZFZ32176464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533adf258055e265ada034a0e50ad56dfe63fb534b88622a185adeca7adf7091. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:12Z), 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/GX38U2192286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9aa0a5f0b062373dcecaeae55171ff0eb36c016532da9d17f8633e33b80b5d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:23Z), 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/GX3HH2142862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c6d434a3525efcd0d37dc6acacb5a8e8d29cdbf52a4664b6c2d5610e3d123. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:44:13Z), 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/GX4R52108380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc532e26c5017dbc1a3160f0625dc165bc318f0f13897f50418ce1688de32734d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBSMU9952982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5905e3a68f2bb81d189d6314cc1d37d0c0c2a4f9531017e178666146abbfe499. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:50Z), 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/GBSMU0029066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ffb050692055c309afa021214184e4688e15baf626f0f0ec57cd5205476da6. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/GX5MX2128014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe942084019dcf9f235465e01037ca903eaaa3520150035368a8beffb7020f3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX5MY2133810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fcd88a1fc5743bcc2d4ee336d38e61d667b66353c371b4772691a623081fd5. 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/GX8KD2221531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f2521d25aa034ef276fcd10afa6bf2261d1e67805a37f8651f2c3654cce37. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:58:57Z), 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/GX8KD2280224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc369e74ddceaa16065fff11904ca40de713e1cce15e8e1f9678b7f98a666d55. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX8LE2361531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6379bbd7a64c8b16fe2bf12c83dd99a5cb46b8b5e5670a8a53cb5dc08bb12008. 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/GX38U2394509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e0dc8d31fcd415cbcb4cc9706247601a6d884fd0b60922e693ba0afa4de14c. 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/GX3HH2338655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe6bcdefb405410a2d8e88261594f3ce5c4b066a1be0224f386c82f78dc103d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GX5MX2324556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e32af98ed22f7b1f7d4759ae88a3aa3080d146dc6e743e40f80609782db4cfb. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTBC2396757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4a213dc2760ac67dc1d9a4ba8fdbd37ca5692fed1f9e2fa5f343cc369df86a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:07:00Z), 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/DKK1C2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecec98265095be7458cb1e28211e0baa437860273e62e5ce5be94f272b23dfa. 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/QZES52408111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33daa14dd91c261a0692332f0115d8bd6650770a5eeb40888ee666ea0e63ec3b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6M2480812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a287f802fcc43fa59bfa54036c58aa4b4fe9bc57a6d0fd1c8fc5dc4d3b64a39. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/DKK1C2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0154cde8aec4e8172dfe79e77aa09c6734ebdb4e2e41031f32cb261182bbb6b5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DKK1C2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2bb93f072308311b85ccf3355eed761e161368359392f63ba73998b80721d6. 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/QZWFJ2457236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d99dab90f547fb2a228087a9e5f355d604544307e1929d7ce1e7f34b25db13. 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/QZWFT2499701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397304a371de020f32f963725dabe8cd29bbb034fe0f8d628bb984e305df2bc9. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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/QZZ772454307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa1dcaa227d594e70fdee7083f146fc40599a3168d4368ab72855b5d03bb01e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7P2462536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e61dfef9e7d3887e68fc48341c7b0eeb16ffe15f3fe6720236ac3a12fe5f1e. 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/QZDA62546723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8405bc0bd5cbcc55db37c7aeab9205b7b741acfd0ee94dc1ebb58db820378ff7. 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/QZES72550435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef6c31c576c68599a43de77f2d3d8d7a457055fd91dbaa4a76f287a11c740df. 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/QZHN62513469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275fd50f953b6fb33ef2b78890280ed79ea2d3815e7b5d6b5f105cb8faf1545. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6N2503401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff998b45cda8bf1a36fcb80f802cd3bbb4d85b3e0a93c9aeb73b3c26529bf22e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:36Z), 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/QZK6G2580376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fa4964ee01c45288e92af1ee707bebbf6606ef2b19913d40a4d8cfba0c999c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:25Z), 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/QZWFW2521573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b75846192197f1e1e17f6f87c800171ce10d8162003eb0a016fd445cca3684. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:50Z), 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/QZZ7M2570787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee02feb1bc0f73ee867db231ef8c5c3b31fb5bf74b73099da37f5abb234033a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBSMU8513986.