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 0x009f309c91fcbb273cdbb5a598285bd557c3a6270a071587319d19c34a0251c6. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19e0deac-a237-4a60-b74e-43d3abb65ea5.json and https://artists.proofprofile.net/proofs/artist/19e0deac-a237-4a60-b74e-43d3abb65ea5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carmina Burana, Fortuna Imperatrix Mundi: I. 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 0x4e2c2388401f69cd1aa8c9983d5feaa810ad716a9882921eadf2762c5ca5ba21. 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/NLA508721901.
Carmina Burana, Fortuna Imperatrix Mundi: II. Fortune plango vulnera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fa6af7fb8c313e2ed7f8e95f8317deb22e4bfe81d27af28c4607949b623b0e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA508721902.
Carmina Burana, Uf dem Anger: VII. Floret silva nobilis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c420b07bb57470741bec6dd0bc9fb6c99cf3303d86f8040d21cde2c2f05f9. 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/NLA508721907.
Carmina Burana, Uf dem Anger: IX. Swaz hie gat umbe - Chume, chum geselle min
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79984e9358028b3a05d1bc5b6720beaed3e6f4ac52d38fd7ab79e9f063473b5e. 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/NLA508721909.
Carmina Burana, Uf dem Anger: X. Were diu werlt alle min
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e043427217a532b6d98c3171ecb0bd83bc4fdb6185f31d41058caeb9310981d. 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/NLA508721910.
Carmina Burana, 2. In Taberna: XII. Olim lacus colueram
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea1d5df8983ed9290812b2479ae4391ae8b1116534b1fefbcf4a31a54e2fe11. 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/NLA508721912.
Carmina Burana, 2. In Taberna: XIII. Ego sum abbas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e1c90fd67ca8c77a18a04c0eda30e83ee6f07f4893f583672ad91a004daf4c. 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/NLA508721913.
Carmina Burana, 3. Cour d'amours: XIX. Si puer cum puellula
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8234271e46f31d19a7ae8ca37b763b31f8cb169d3498f5790f222218fcdc4dcd. 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/NLA508721919.
Carmina Burana, Blanziflor et Helena: XXIV. Ave formosissima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415b37bda2861b0047c0a82c9451cebc011be3e6ad7a113aa3d7163dcaba00b0. 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/NLA508721924.
Carmina Burana, 1. Primo vere: III. Veris leta facies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e62b91be1e00aa5298e86cdea36303f1a79d67f4bb4b9bf1ee7e8aaae26e1df. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NLA508721903.
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, 1. Primo vere: V. Ecce gratum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cb28b05f68f88f09435c833b91a6029eb39de6454a9f8995f517e10c90313c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLA508721905.
Carmina Burana, Uf dem Anger: VIII. Chramer, gip die varwe mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02dbd81a413b731e6599385cdf06796853a6ee45371cd5e1e0afb8afeb7ff51. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLA508721908.
Carmina Burana, 2. In Taberna: XIV. In taberna quando sumus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97949c6ab1ee296ab082693ea1453006eb76b678c756c9a93d9d8bc102a46164. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLA508721914.
Carmina Burana, 3. Cour d'amours: XVIII. Circa mea pectora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71555f2fa51deb708982dd84c76183e67579bb271b819fa38eb589c9966576c6. 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/NLA508721918.
Carmina Burana, 3. Cour d'amours: XX. Veni, veni, venias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded9f51a824f0e18fcb7f31fbf55dfea98446b32899e9e3de99a328040c72cf. 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/NLA508721920.
Carmina Burana, Fortuna Imperatrix Mundi: XXV. O Fortuna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a67676ac0e10564a2f867c71338ce679b64d2ba64c88191fd56f954ba375a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLA508721925.