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 0x9dad97af90edc8d3e138ea3956479ad28620ba771b7951d0cf318faa96305c65. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4403f2d0-ee64-4ded-bcd5-92e78fe3e6c7.json and https://artists.proofprofile.net/proofs/artist/4403f2d0-ee64-4ded-bcd5-92e78fe3e6c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orchestral Suite No. 2 in B Minor, BWV 1067: II. Rondeau
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 0x8050b9316336b2a1f4f86e37e32000463821d35cfdbe5a709de033a2ae29fb71. 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/ITCC51102089.
Orchestral Suite No. 2 in B Minor, BWV 1067: III. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae57f2fdb04b8913db8c82fdd7c246ef1c7cc8e7f2d7b68eb3612f4daa9fd52. 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/ITCC51102090.
Orchestral Suite No. 2 in B Minor, BWV 1067: V. Polonaise - Double
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32e12899afd0307dacf2a59bcf36e9325d0d60441b2a74548567dbd13f0e2d. 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/ITCC51102092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc346145cc8171ee784d92142df796ed47a9c5b17d1a1a256d2aa413140fbfaa. 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/ITCC51102095.
Flute Concerto in G Major: III. Allegro spiritoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f632b319dfe323cee1f5a5b120ed22b6828ec48e6b865a30d88af9e8043de08. 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/ITCC51102097.
Orchestral Suite No. 2 in B Minor, BWV 1067: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f2de4ed87955a173e03c90f403e9970dece78b4e2d48afcdd97ebd3d93f32b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/ITCC51102088.
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
Orchestral Suite No. 2 in B Minor, BWV 1067: IV. Bourree I-II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a2267e89e637eb210a08f945cbf418b9b9160832036ef1ea18a27c0394d03f. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ITCC51102091.
Orchestral Suite No. 2 in B Minor, BWV 1067: VI. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdf41b1bf5624a5411351d8c6e5e3ff602d1475f88c8a8a74ff2fcef6811cb7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITCC51102093.
Orchestral Suite No. 2 in B Minor, BWV 1067: VII. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29130e99a9ae08bc5ef3eeb973ce4070741947f7545400914fadb952ba8ac275. 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/ITCC51102094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b410dfb747d23413d9fa9f5cc8e0ce1fb60cf118837c52d752e6f290658ad74. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITCC51102096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0204ef82ddd1a5593112f881149091a72500b5b9c6e0b4a44d231c26479e8bdc. 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/ITCC51102098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2db167654df50f6d736702396c2f1308cd819dbd31a765e489b80c485e7142. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ITCC51102099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a34fb799177f6dffbc92ccf9959d6f7142a9b0548c55c65c352e2e92b8e7fb1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITCC51102100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0f02e98b317e8e25b416ad55cd4fccd3c4efad81811bbfa9931103b78920ed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITCC51102101.