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 0xc075e2b85e2a0403a7dd026f34b48df47b68d11f1d61bf46cd22dfeaeddc9edd. 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/7e33c524-11c0-424e-a8de-02978ac73faf.json and https://artists.proofprofile.net/proofs/artist/7e33c524-11c0-424e-a8de-02978ac73faf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
January Midwest Rain, Hail and Thunderstorm
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 0xe6b2822ade2aecfba644b8e70f314b535be0b2a770525fb2953cbd5e2c2aba45. 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/QZAKB2000652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086dbb6894e90df8074accfe0dc517c1a29cf09a5d9c1967946154063fba7735. 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/QZAKB2000653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed70c9bc5819ff09505254cf5d7b2197091c6a2181b09c71f8abc5211383885e. 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/QZAKB2000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee07fefb6f94533f65e8bcb7503692b68ee6202bce2cad29567316f90b0ed98. 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/QZAKB2000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beb6abe4bbfb3023284f48124917c14e4eab201de52f5860dca57f9e2ff060c. 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/QZAKB2000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4557959e25c4c9e9a003861175dbccb151d761bffd74c96e9039b92678427407. 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/QZAKB2000657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c19742ace90ff0d0dc9a41f81706ecca890062fcc4b6e225d3b2027957d31f1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZAKB2000658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9af62cd4498b00efb3628c25e7b8d7fbc9dcc9fbd78eee37a8991810c89db56. 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/QZAKB2000659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555343677961d84cceb475e7702afb57795b3eff456fbe699b4c4c8f0a2cadb7. 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/QZAKB2000660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c697554aa1dc44b54e1453b238ffe97a68e6f25b2195a62d4643a578c3c14bb. 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/QZAKB2000661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f25d6f7a72c658a29fa463cd8f6090eb8c48ae096909931a56097b4a9770d1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZAKB2000662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c79fb01e8205fb953f5f50c8afbd7815152efe5b6e88ffd164fa2afb0e1abc9. 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/QZAKB2000663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058126799e65ca3f7deec45405032f5693c2dca88fac2d9033654eec59a59f4e. 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/QZAKB2000664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e3eea8215707b5ae0c20cd6f9d4b9d5665e74043d38a046d5b371a0fdd893a. 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/QZAKB2000665.