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 0xbfb965f617ccae80c62f091891c2b9161988377a3214e5f4bc90e1c470b869bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/067357d8-5bcc-4c0b-aabc-592e7e8a7c16.json and https://artists.proofprofile.net/proofs/artist/067357d8-5bcc-4c0b-aabc-592e7e8a7c16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2019 Florida Music Education Association: All-State Middle School Mixed Chorus & All-State Middle School Treble Chorus (Live)
Florida All-State Middle School Treble Chorus
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 0x0e1a357837bd0effeb16b506dc7ed250530467a9e3d677873250a53e6f8d5c58. 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/USVZX1907606.
Nda wana (Arr. M. Barrett for Choir & Percussion) [Live]
Florida All-State Middle School Mixed Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd820406b086f1aba7bd58a444505d27924dda011385c01894433357691a52b65. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USVZX1907612.
Mangisondele Nkosi yam (Arr. M. Barrett for Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c58353f49d3c10cd521296d14dcc53b254b1720f489b0170b0d205434eadc1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USVZX1907610.
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
San'bonani / Namhla kudibene (Arr. M. Barrett for Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326b70bc908c5bdcb6860c23450ae544cad05d9098ef028ca1cf290df5138ffd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USVZX1907611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee8393639b9187cf5c88702b2bdea53428cd2faf3b96c79424ca8374396bc0f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USVZX1907613.
Walk in Jerusalem (Arr. R.A. Dilworth) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab6e8736ddca97dca7b2d329859d4704904b079baab0113fbccce7501b3650. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USVZX1907614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2007af244724999f9dbf87ee3688a1b69c09b6827ef3e36ec9a745e1b8447759. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9K2426392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f697e61c8311ae24b89ebf3fef3abeebe287c91a78784a45b06cf06a414db. 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/MXUM71801873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f697e61c8311ae24b89ebf3fef3abeebe287c91a78784a45b06cf06a414db. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MXUM71801873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f697e61c8311ae24b89ebf3fef3abeebe287c91a78784a45b06cf06a414db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXUM71801873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ffbc65242206038d9f7a1950eabc0e68c0e1776fc9d7ffd29a9beb799c2b8a. 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/MXUM71401483.
No Morirá Jamás (Edición Especial Y Versiones En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ffbc65242206038d9f7a1950eabc0e68c0e1776fc9d7ffd29a9beb799c2b8a. 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/MXUM71401483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc63c3fefbc47c1746badda7831da2db84fa279f70fd0c40c1abb4286cec3c94. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MXUM71501871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9145a49fd388061e975e3035b70f2e757f1ef5f5efc33e413aa92f0d54f9b0. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TCAFJ2120433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61caa1e106002f4a7379bf5fd03567a7ed90d94331bf820c1b0d150f4e892042. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MXUM71801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d657832d1ffe3b782d280fac46ab29e22cc9e603fbc22995ca16e55bcd64af0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCAET2088289.