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 0xbf2cff6cfbd5306e3e2ee8ab9fbeecd3fc123aad4c464f8c7009c12f2bef100b. 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/0b67f46a-c6c2-4928-b910-b90e35cfbca3.json and https://artists.proofprofile.net/proofs/artist/0b67f46a-c6c2-4928-b910-b90e35cfbca3.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 0x9690e3d5e5af94378e7e3317d88bf760741e754ce307bd492ac9f6e4e2af85f3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZMHK2023667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deedae2270f767b509c1a46538af887a8f86e99aba1142832f84ee295c32bd2. 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/QZHN52067492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c21422c0f4e6b11407e0f4258c952bfd8ee1e9952b005827392c59886f9b44d. 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/GBEWA2303241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74e422abd64ccb660ee1625bfbc0d5e4eb40572ba881b479a1935e2ad302c49. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2303243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85eecf81b27dcdd6dc0e520328656977ffd5e929ae47d4f4f5e7497b06a54d9. 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/GBEWA2205800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a4cbfc49001ded7eaa0072feea47466b944a8e765423ebd79762b7c86f857. 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/GBEWA1901958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9d49cf7152804d30bfeeb59f5f6cc54f3907508e9c6de4f80fa9143e289133. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA1701693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85eecf81b27dcdd6dc0e520328656977ffd5e929ae47d4f4f5e7497b06a54d9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2205800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85eecf81b27dcdd6dc0e520328656977ffd5e929ae47d4f4f5e7497b06a54d9. 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/GBEWA2205800.
Whisper In The Wind - Live with Black Gatsby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323bc953461c7f6b68cf4b3133d85b5e2b721c47681bcccd362c115028bf5ff8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBEWA2101883.
Gary's House - Live with Black Gatsby & Nic Hanson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345401eeb30e53963ab18f58f36e72152e774144125f2aabe67fa07f0c37d33f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2101884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a4cbfc49001ded7eaa0072feea47466b944a8e765423ebd79762b7c86f857. 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/GBEWA1901958.
Whisper In The Wind - Alex Metric Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfc4159248e2268b0513656241ce4e31eaaa5092b07c63fd4b84df6a0d9cbbc. 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/GBEWA1903417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824aaa0e4f86d791ac298509cf00e2f234ea37bfa3dcbff6ea02b22ce13ba3a2. 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/GBEWA1801300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9d49cf7152804d30bfeeb59f5f6cc54f3907508e9c6de4f80fa9143e289133. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBEWA1701693.