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 0x4cb6d141535c75030ded7b99da0e6d5f6dc17310a199c9f288b99c8d8f5cc66d. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0d8bcee-e9ab-4991-b797-3c896adc8e0b.json and https://artists.proofprofile.net/proofs/artist/c0d8bcee-e9ab-4991-b797-3c896adc8e0b.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 0xf60cbec3a864f51ab277cc162cf5427ec49719da1ce5e5324dd866362745b72f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:11:18Z), 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/GBCKK2371301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd59e068394427691a0cc363f92c8a40e21915ee86ee1c190eeed4b48e8197. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCKK2371305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456f77376e2d888005cf2da956963f9bb77ad09f07453e34c70f3a53dd6e71c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCKK2371306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce569b1a791f458feb4b53cca41f28155f10b88064559f88f4d01dd49a793a1. 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/GBZDN2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64687521a88b9fca96e26c5a7489ff2b730c9202c5f7e09137b1051499f81209. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK6821700802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f9e13cd31f7655a619eb438ac5bc597011e269b507e2aa62b698f09e5f1f8. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:23:17Z), 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/UK6821700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a037e533e40d35398f4a0d49e184fd1a0441feac7f473c78ced5c47e61e3ad3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBGEY1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97604ed2821cf6c31a78fc9df0acc7668e247f1af1a1e1c3e82996cdee014df8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBGEY1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01f93d91b7d5a3c286f09b34c37178632c9cdb6b177c278aa2191f423ee82e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBGEY1900006.
Fun Destruction - Bas Jan's Deconstruction Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dd00714608b367cf895763ed252479e75124aae1e49777cc550fb031ac4e05. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBGEY1900012.