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 0x3daab1361da52615cbb43e6db7d79c23ae7ea2194d8a0da66e58a8a45a440604. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/034c8843-d674-46cf-b755-6683e1528b6e.json and https://artists.proofprofile.net/proofs/artist/034c8843-d674-46cf-b755-6683e1528b6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Comfort Ye My People - Lamb Favorites Album Version
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 0x9fd861ffbcdbdf786aa2c07401a708a14cd1c2c0d3d6ae6e1f2abe3eab8ebeba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:23Z), 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/USSP38049757.
Baruch Hashem - Lamb Favorites Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d75a4e1b546fc388fc3500b595ee253609266c55856bf6004ccefd9fad37d5e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSP39518613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192072d759b472bac67fbc336c112929e7e8dc6ba6a947677e10150fc59fe8bb. 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/US25L0500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61212df8aa0efa36ca6d96fe52683b2b49eb0bb7ee0101a211d6b11abd7da864. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US25L0500332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe013afe6d6644419aa40f9c567e92e6c73e38d7fdf0be217489f378322cd9d10. 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/USYMJ1100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0574df69445890b6de8db9f5f05228538c4a6828b80221ff32c6b6d2dc48f897. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USYMJ1100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f1a14980afe36f1317780d21688cc9eb003a5211f974926b1477e29b9307d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USYMJ1100059.
An Extension of Now--Unreleased Recordings 1968-1969