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 0xd1507687d7e4bf4dcd76fd15cca73656a066acb74a830c827d95bb608c4b8faf. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8c0e0fa-7b0b-4959-b022-e228a98eb70d.json and https://artists.proofprofile.net/proofs/artist/c8c0e0fa-7b0b-4959-b022-e228a98eb70d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto in B Minor, RV 580: II. Largo - Larghetto - Adagio - Live
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 0x4d34c6bc2dd13fa4c41359bd1003f1cd22d8179fc6a80fffabe0c626d8d85f65. 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/DES382024002.
Concerto in B Minor, RV 580: III. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3ccb57a4430060b15c7e2d4ece45d13f79a90cacb53388f6321e2fefac3629. 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/DES382024003.
Concerto in A Minor, Op. 7 No. 11: II. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae57e98d4e5ed5447a29fb4fdd89e9f9e2f6fa8cf24523ba0e6450f5a0b2b4f. 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/DES382024011.
Concerto in B Minor, RV 580: I. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e846ff9af1862e5f7babbc79ce45f6ef48632710a1ffa6389627b5d6b897b9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DES382024001.
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
Concerto in D Major, RV 549: I. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3134aaff581f6bc09eaeb105292ca3ab7d7d539edaca8e274e05c8fe4d6d7e1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DES382024007.
Concerto in A Minor, Op. 7 No. 11: V. Adagio - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798b29fb70eacd0973feaf59449fe418cdf9e546ba3aeefb552918ee2ac471ce. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DES382024014.
Concerto in G Minor, Op. 3 No. 6: I. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eca8bd428dc50e657ee4eb8f494d354335323d93cb25189b8fdb6debfc3425. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DES382024016.
Concerto in G Minor, Op. 3 No. 6: II. Adagio - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e78b5efa841d5e053208a414d1200fed67ed653c26568b7fd6b144ef3ff409. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DES382024017.
Concerto in G Minor, Op. 3 No. 6: III. Giga. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8efd08e96abba2c24568b6e4a9529367121378583aff529790225406f39a7. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DES382024018.
Concerto in F Major, Op. 4 No. 12: I. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd213ef5d237f87ea657c86c197f5408df4b5dff98be5f72f273852a105d32775. 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/DES382024019.
Concerto in F Major, Op. 4 No. 12: II. Largo - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26ed80180be8190a14a525a7cb9692add2c54e491a9b592074568f254ccda6. 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/DES382024020.