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 0x676c40383116d2fc7ecf0366cbfb5751458790172fece63ba8b63ae8f2f49439. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67eda384-f22d-479e-b5cd-0ad4e2a61952.json and https://artists.proofprofile.net/proofs/artist/67eda384-f22d-479e-b5cd-0ad4e2a61952.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hadouken! / No HxC Dancing / Forcible Entry
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 0xbfe518af1c66d1286ea1ed95c77b30e6e3da028ce7efcb2b2fdcf4f2784953bd. 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/QZTB52312759.
Good Guys Go To Hell / Drowning Wasp / Gumby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8768594b148f7af3e6a10b26f2454be01ef1f315aa930234c5aba9fc2ad81654. 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/QZTB52312760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46daf5a310df4a64f2ca427a153f706214697ceec26fec6fb22f016ce75b8f4c. 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/QZTB52312761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc349c05f256819e358cc913373d34413bc54e9b4bde6c87a79d726543a2fa988. 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/QZTB52312762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55d86431d6d9c5ac3cd3a4a52a7621845ac188130363e5c749b3ec38e5773ac. 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/QZTB52312763.
Killing Time / Only Human / I Wish I Had Paws
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd21e58aab9626063d4ff885a5cc41603c74f00c57ae27f26eec456af9c7159f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB52312764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567ab90e705eeb1c5f9c9b772e18098a687e2a0a60c7439eec7b5f1cc83917ff. 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/QZTB52312765.
Failed Experiment / Cowabunga / Jury Duty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9785db42f252929d1cef038cac4428c35c38753267b4276f317fee1f01d0418d. 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/QZTB52312766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8321c1237ba614c03ca6dc1a948ee80b0a6f221a71994ea291f79910a3e8b5dd. 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/QZTB52312767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131c98e07698c0a720678a10329880cab0f7a16911f4d81de882a0d3fb2df78. 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/QZNWV2358129.
Chris Doesn't Like Noisecore / A Necessary Good
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f049a1e5589fc1e2226c3493200010eda77f0f659aa6c3c378de4709c4b494b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWV2358130.
Dissent / Never Trust a Tweeker / Sleeping In / High and Dry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a6eb3b025a52359ee94b898daef29543e0613b8b62d21d18cc37a4b08d675. 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/QZNWV2358131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c27fe9a365667f2e6988fdddf0990ad600cf12b38dcb69bfc89e70d6062c019. 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/ES71G2039043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4304da39d2da6ce794e12096bdd88175413488398926a4358df00ae1625d26c. 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/ES71G2039044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a41fcad1656c20202e1283f8b6a92143f7eb84107143487dc7e379922e2c61. 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/ES71G2039045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07156e7ac719135dda141aa0e522a433c676dcc673986b90ca90c2f6dc58a023. 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/ES71G2039039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48fa5da1d31dc3e4f1e285ecc7b0a3a65eb46cf1aa264a3f7701115e0665048. 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/ES71G2039040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cba0a78ee9ca7336872f12845faccdda8d320dc46deec89963af57675dd4363. 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/ES71G2039042.