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 0x4376684d7aa484a5dc44ee3ac96c4fae4a4a81b960e45d6f5282034fdabf1fd5. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de15996d-ef95-4a8b-af9e-aa8bd32932d3.json and https://artists.proofprofile.net/proofs/artist/de15996d-ef95-4a8b-af9e-aa8bd32932d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything Is Pretty Much Totally Fucked
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 0x8a2da82dff0644353fd6921290359718a427d956837a9faac763227cd314c64b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:42Z), 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/US3R41937202.
Those Days Are Dust: Dream Erosion, Pt. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077bc834c9eecc39e27ec9530766fc23b3f506c99cf6f97a4ec4b9c89bc4ccd0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US3R42449601.
They Were Leaning Against the Clocktower, It Was Early, Maybe in March or April
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fc574ef434f8fd703347f876e1c153f0f41c4adbd9af0fd548b04b5ebe3c55. 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/US3DF2573932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a3e645f6959418138bddc3b2bd69c48d446c6c2cb796c946e8db70e2b84df. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/US3DF2573933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77caf2580b719942120deb8ec864ef12875ad330a1e2d1b6c1500129d944d8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:43Z), 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/US3DF2573934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8077dd879ed6bb744f1f07fbe80e925978c7e02491b3b690c94f831b19af3e8. 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/US3DF2573936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b06e5efdd1642e6a1089f1bde0a68b42054604a1fe49ed2b3d738b2acd85c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF2573938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58f90be56e96749f365afe745ab5066e19b7ab679d0e8a4fde6e5c01db0411c. 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/US3R42041906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21cc1ea400ab2fdce6b5ea39bfef90fb43eee04450b8b71b506caf7c5a7737. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3R41632506.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch