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 0x6813c2c7699f6d15b71430e58c69d403817aa63e698806c01cf6f943a1046a15. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d59e9992-474e-4995-b808-e7b5e902e95c.json and https://artists.proofprofile.net/proofs/artist/d59e9992-474e-4995-b808-e7b5e902e95c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Have Arrived 2013 (feat. Marc Acardipane)
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 0xc8a4924e6974846a9edac2272e4fb88745d18c282d01787c606b694bf36ac9b2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMHL2328956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac21c63a310bd07d7b5905f6d09292d785a3c99de94752ed6f456e03006a91c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZS642394859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151c7a86f9a41e50e6e039753b7f10cdc8322d1bbda6010e258ee1c3761f7048. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:06Z), 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/QZMHN2316684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb8e8405e1202791ddd5aaac39ddcbebd4410c75da90155c2d8d40ae6620885. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZS642371232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9ec652bd525bc0e98e43eb9f68f46974eb23ca489c11da3321aef42d749d46. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZS642326975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eceb1bf47e7f7265500d2970f96d9b1049f7530e68d55f515f2da11268ad561. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZMHP2354546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667f2a20cc74c6c888b3d6f281738d01e95b762e1600c69de120011123ff38d. 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/QM42K2359275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3c3a981da84fa85def9fb708b20825d198eb31c7bb6eb02f33466cb8d995dc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMHK2331779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f80bce8f0a120a32c1340f0668323774a097aea9f8c2cb4dab9480fc0a400ac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMHN2357303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150a8cbb716fc794e679b0e049ee28ec0b80621bf1002ec312a4c2c1defceb2f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZS642321225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1593f0aa8b8c1e0c5b9dc71975f1fb58dbc0b4ec4da76dfa208d95237617e71e. 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/DEBL60609578.