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 0x7b10b8634fe46c0e3d15c05251553176270a35522454b4a966717b4eb8592bbd. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b197a2a4-8db3-43a7-bb2c-beb0d9b6482e.json and https://artists.proofprofile.net/proofs/artist/b197a2a4-8db3-43a7-bb2c-beb0d9b6482e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Forget What They Did to Fred Hampton
The Water Protectors (Jessi Lee Remix) (feat. Michael Mayo)
See Line Woman (feat. Brianna Thomas) [Jesse Fischer Remix]
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 0x43e1503e6498d8c9156bc87251e55a2cb3db99e6120a5ea438f14f3579a4a468. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZJ5U2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ef9ea21bd5f022abb72e35179293f72b6c59c2166f9f4d6d0ff03c9b1054e5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:16Z), 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/QM4TW2523839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c7060dd33f9df8874619be972a67858aae45955074f4651fdaae48f3ea990c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:14:01Z), 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/QM4TW2523834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445720b44d462b8f24e84628726a53bcc6e039c50086a2f1c7942a0df5c2aae3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:59Z), 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/QM4TW2523835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae044354ef73679ddb0541449181a8afc70f09d5ef8ab3050c79c34d4d88ffa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TW2523836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bbb62ba311777a4b12934ec6624b1b4301555e73127f843f03db99c587b063. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4TW2523838.