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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e38f57c0fdd1fba7d446a4bc57ccb1c2d56cf49de7a08fc50a3c48f6712dd1f. 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/208c3ed1-3c9c-46a1-a3cb-a0b769158a33.json and https://artists.proofprofile.net/proofs/artist/208c3ed1-3c9c-46a1-a3cb-a0b769158a33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lighting the Fuse: Sparks from Treason in Concert (Original Soundtrack) [Live]
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ee0de28cbd702b1b2225cef604dd0255d86ce37d37e7a033e9631674844637. 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/TCAGT2354383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01720e1e420cf6de4cbc729705e70c7cfccc6758869a5fc7976ecebea9af6b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAGT2354981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dad3ec2bced49a1e9ea789a271317059c4b277ac4826424b04dda97ba33ce3c. 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/TCAGT2355005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23031bf8bbeb95cb9c8c662f878717b29d1245cb9d66ca0a789501fb9b1e616. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCAGT2355018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f264a97cb7560d882bdc1f8a2ea02d2306f8ec2bbb6c402868e5bc3d1be35. 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/TCAGT2355040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5f27cf5651689743ed1ad944d7c43e74603e5660d95b1df2cc507449664db. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:13Z), 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/TCAGT2355052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915778a83151bcc7436bf7f38b161ac4a7f32d6bf459e9443b6800f9c58d5f9e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:27:06Z), 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/TCAGT2355093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f694dc0f10209f5b9ffe36777cfe17d445e760bb58bc55e1383f5bc456e1c7. 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/TCAGT2355109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0fe5a2e657ff9dcc12d2353fc3f6d3f37fa54f63c33545b962dce08b24b4c2. 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/TCAGT2355179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df5bf777416daf2266526cef9d53779aedcc5602ab3ded6f11820681d5e9b28. 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/TCAGT2355187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d21dfef11423db360dbf48afa62169c3f134763f592bb198ad4e26451b589d4. 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/USSM12107546.