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 0x9aee82c5a86028400aafcd51ad6f6d3016c1a8813ff59e6c37e9eab8aa1c027c. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af0ce4b5-ddb0-4aed-b50d-b175eec94a11.json and https://artists.proofprofile.net/proofs/artist/af0ce4b5-ddb0-4aed-b50d-b175eec94a11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carmina Burana / Fortuna Imperatrix Mundi: "O Fortuna"
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 0x501d43b3cb0fe959e2a171f35269657d9f8d7515e2643cde221a01d1f41fb6af. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN961030401.
Carmina Burana / Fortuna Imperatrix Mundi: "Fortune plango vulnera"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c02ad61f959426c0b167263a5b7226a35398aa456a7d07a79f537c961b341. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEN961030402.
Carmina Burana / Uf dem Anger: "Chramer, gip die varwe mir"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481ecaf4278114f833328f6be2723da69520fd12ae41dd27ddd0c61059261c3a. 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/DEN961030408.
Carmina Burana: "Chume, chum geselle min"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e6cc812005ee7f715219416197a4f129803dfbc95194e94add8b11a97e7464. 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/DEN961030411.
Carmina Burana / Uf dem Anger: "Were diu werlt alle min"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a22ac29dbc9e955afb096e3a665a742de707188346a6b63b8143a9395b452f5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEN961030412.
Carmina Burana / 2. In Taberna: "Olim lacus colueram"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2af27d8954d011084894792c94bd05ab34703b84f2abf860eadcb977daad550. 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/DEN961030414.
Carmina Burana / 1. Primo vere: "Veris leta facies"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ab0f99401d01292455ddc1b52c39f81fe5a7178b852c15e4369e90543f48d9. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEN961030403.
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
Carmina Burana / Uf dem Anger: "Floret silva nobilis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d72ff8373c96e896f772b74799556adfa5c8f0f7d188eeaad4eb3f04045789f. 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/DEN961030407.
Carmina Burana / Uf dem Anger: Swaz hie gat umbe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4307728a4eb6923a7643577f3a862d111d8fc3d81b56939a4e20088408ebd21. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEN961030410.
Carmina Burana / 2. In Taberna: "Ego sum abbas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbe580a9922da72caccf2b911d2aa4f7c1a0ddbcea7a2517e8ad1aaa01e83ab. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEN961030415.
Carmina Burana / 2. In Taberna: "In taberna quando sumus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a0428224d9f1a8d0d23073ff989553347adf8d506d732f84fe979037d80b7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEN961030416.
Carmina Burana / 3. Cour d'amours: "Tempus est iocundum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1f44f7f6c4a728dfeae41a18730cfca01f67cce1f0b10e746a44e8048cf035. 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/DEN961030424.
Carmina Burana / Fortuna Imperatrix Mundi: "O Fortuna" II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252019ce94babb7357abcb6d79e50757816b58a240f47eb1b05bc727f086efc4. 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/DEN961030427.