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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25942f813b15dc08c31223e767b44ca89bb68d8b7d343b22fec507b09d926946. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5cb6478-9315-433b-a7c2-1a2a83d310aa.json and https://artists.proofprofile.net/proofs/artist/c5cb6478-9315-433b-a7c2-1a2a83d310aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Air on the G String (Epic Powerful Version)
Bach. Cello Suit No.5 Prelude for Viola. C minor
EREN TUNCER, VIOLA, J. S. BACH SOLO SUITES NO. 1 AND NO.5
Prelude No. 10 in E Minor from The Well Tempered Clavier Book I, BWV 855
Gavotte ll, from the Sixth suite for Solo Cello (cello duet)
Baby Moments: The Best Classical Works Vol.1
Lute Suite, BWV 995: in Gm (trans. Am) - Prelude
Allemande - Paul Galbraith Plays Bach And Mozart
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742fc26848371dc330fc61fd938e4dd228d5845c6755baeacd88f680f5d41a4d. 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/BXRHI1600066.
Lute Suite, BWV 995: in Gm (trans. Am) - Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009fb7ccca525764ad921f6da424f87f5517d0b1142e8cfe8db254e531151e05. 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/BXRHI1600067.
Lute Suite, BWV 995: in Gm (trans. Am) - Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ac95ad393d22275bde2c1a61366fe8746a5a016c2956d3afe776e6d80dbd5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXRHI1600068.
Lute Suite, BWV 995: in Gm (trans. Am) - Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b0c4c6fa137f1e07361ae1519ddf58002b8967c46e5fc898944070ae7dbb4. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXRHI1600069.
Lute Suite, BWV 995: in Gm (trans. Am) - Gavottes III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7422a8e26bd90f55742f5be64d4c0773f2859491e6ae3bc86729f7cfaf4122b0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXRHI1600070.
Lute Suite, BWV 995: in Gm (trans. Am) - Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a407badc2bbbd7cc2a258db4c22b7443f508dd1edfbe61f58602288831253b. 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/BXRHI1600071.
Cello Suite, BWV 1007: in G (trans. D) - Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ea0f3bf6eadecdf2b37b1f776ddd93963b596e3ed200c0adf54a26f078fe7a. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BXRHI1600072.
Cello Suite, BWV 1007: in G (trans. D) - Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e61010065e56b1be7edc12e982ad177025254b0daa20cf26072ec516d808fea. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/BXRHI1600074.
Cello Suite, BWV 1007: in G (trans. D) - Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119a31856f72cc74d88d133a294b420bf055041cb7500d016b7e7d54d90c0f7. 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/BXRHI1600075.
Cello Suite, BWV 1007: in G (trans. D) - Menuets III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bd3216ba30cc956c574899b8d1e287ea5241d2e11dc5cc72f86cbc76dc5156. 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/BXRHI1600076.
Cello Suite, BWV 1007: in G (trans. D) - Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19717f41a58de86d9d5575f98e4c33665c7ee221b8baf3a5488ea19e98159547. 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/BXRHI1600077.