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 0x692685b510d1598469b7b889fee0e8592cc662ce490981a7e30178e23dbb5baf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/850b26cd-9fbb-448a-bc0c-f21612ab64f8.json and https://artists.proofprofile.net/proofs/artist/850b26cd-9fbb-448a-bc0c-f21612ab64f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gone at Last (with Phoebe Snow & The Jessy Dixon Singers)
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 0x62b2b0dd28a08c863b43007572009b6ab88074151ff838297656684a2bcabd5e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM11002306.
Gone at Last (Original Demo with The Jessy Dixon Singers) (with The Jessy Dixon Singers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbbef2f885527223e0c8ed5e318c29bee4003b134cc800aec8f8930bc3f6cb2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM11002312.
Me and Julio Down by the Schoolyard (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477cdb69853429388e4c9e6872edef8b4420760ac995254a6b1ce24339fda992. 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/USSM10000918.
Homeward Bound (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a012028c6c210ac39034e0adbf3e6606622c9555f23da891825e702bd6c650. 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/USSM10000919.
American Tune (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a40183e04a53a995397a5ce23b024730641ec1affd9c523fe4028144a0247. 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/USSM10000920.
El Condor Pasa (If I Could) (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd316d92be36dbd03797017c00bb6f2df3b53b250a872ff1a5aeea6a8f3c33146. 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/USSM10000921.
Duncan (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1610a617989ad155c16259ead7c59f34b3756691f8b61fa9828a6f3ac0a5d0. 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/USSM10000922.
The Boxer (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a78083d8e352bfcb23e72256ff9d1f643227b01dca13f5163a18100759ef9df. 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/USSM10000923.
Mother and Child Reunion (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a84ca30fc0755258baebb3ba86e168ecdca5ba2eaa4a55aa5b02496c6ecbd6. 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/USSM10000924.
The Sound of Silence (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef755d3de9e65c939360d9abeee00b47165e28f765533f1fe6b335966111eb. 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/USSM10000925.
Jesus Is the Answer (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dfe042cc7eb756a8078ad382f6567f18925e7864857fd798dfe550da56e05c. 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/USSM10000926.
Bridge over Troubled Water (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cfb20410d8facad569acb9498a6b0dae98dc1f1a3a344ea48d0d46a4506c9b. 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/USSM10000927.
Loves Me Like a Rock (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445419160b1cd86661bdb70275d62c958594cf3fcac2386fb2b506bb13668fcf. 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/USSM10000928.
America (with The Jessy Dixon Singers & Urubamba) - Live 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1978e944c58665151eddf755fadf81efee8065a699ca595b3ae31dd7a2d10a1c. 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/USSM10000929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b2b0dd28a08c863b43007572009b6ab88074151ff838297656684a2bcabd5e. 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/USSM11002306.