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 0x361b29985276b93c2b052bc09d53ddc07115049ca9da8aeab0290c0f36d088c1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd176f08-930d-42e5-9bc6-43525f0ce223.json and https://artists.proofprofile.net/proofs/artist/cd176f08-930d-42e5-9bc6-43525f0ce223.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 0xd5b4bd268d50dfd81da2a9326e1d8259b1fd572fdc62b5aae142fa276fda189b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:32:59Z), 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/CH6542439111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde524ea54139c18c3361d0ab67c7cb46afac573a1768b0dc732e33168404165. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:19Z), 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/CH6542439112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc5cd21657e3e8e67a9d00b7646a2dcde4e577dd3dc0ff72ef05a300643636. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:45:03Z), 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/CH6542439114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca79ae56acb9fd84de44d573ddd4d4d78d45c8eaadc96e905283797816b0ded. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:09Z), 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/CH6542439115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082d7bb1675008dbadea442fead5fed89a5dd2e8cf6b3b352fc4c2e6e045ee57. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:30:29Z), 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/CH6542439116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae2472f654748fefb8ce4332110fbf54ced5d50527c1872adb9bfaf17f2c955. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CH6542439118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b489ec536fd37fa6c94a92166ca768d7da6a250590f12107f98c69483c3353. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USERN1009129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaa15e0467b420cb146d3d5ada62c8bc097b03a0c0df5a181edb304f51aafb0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:08:09Z), 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/USERN1009133.
Colossal titan strife - 20 years anniversary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed67da4d5ce2198d5196250a337489adf9bdb2e3f19315d0500d7a2318686f97. 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/USI4R0910678.