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 0xf951591125109d2dc0af5ac5594238aaf2d54f98e683bfae5037da6432c1ff27. 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/8b10ad81-9b6e-4cb3-83e0-8711d071f593.json and https://artists.proofprofile.net/proofs/artist/8b10ad81-9b6e-4cb3-83e0-8711d071f593.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Season of the Witch - 2002 Remix w/o Horns
Super Session (with Al Kooper & Stephen Stills)
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 0xa8238a89d3401f57e27448d34911ce4eb7795a0a328cf4e08d9c7d3737ef383f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10204837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897abaf93592279b3a875c3467db2de5d5842394933595bfb59b727d923c5bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM19917717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e017ca6d3be7d824cb9ea40df7953cbeb20bc047d0fecacb986399fe027d32. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM19917719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63daf089980195ba0a48bda08f60d1de3d142982b3fc0bac7664d647f66a3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM19917718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897abaf93592279b3a875c3467db2de5d5842394933595bfb59b727d923c5bc. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USSM19917717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63daf089980195ba0a48bda08f60d1de3d142982b3fc0bac7664d647f66a3e. 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/USSM19917718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e017ca6d3be7d824cb9ea40df7953cbeb20bc047d0fecacb986399fe027d32. 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/USSM19917719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8238a89d3401f57e27448d34911ce4eb7795a0a328cf4e08d9c7d3737ef383f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM10204837.
Super Sessions (with Al Kooper & Stephen Stills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897abaf93592279b3a875c3467db2de5d5842394933595bfb59b727d923c5bc. 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/USSM19917717.
It Takes a Lot to Laugh, It Takes a Train to Cry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aeaf34f5fa2ef8e170738cf5ca0b64b24e0b65c9c8f7f62c8e37930881cc2e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USSM16800006.