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 0x0b95a5337ba036717ff392ad10531870f8a4efa16a2fda154095a20336a71bf4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd10ee79-0635-4e4e-9f3e-8f3b60879473.json and https://artists.proofprofile.net/proofs/artist/fd10ee79-0635-4e4e-9f3e-8f3b60879473.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8d4702f035b5337bd9784db81a11f4f5ad7db3fecbc9b569caf01148827a20bc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:07:06Z), 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/FRZ026680260.
Aria de la Suite orchestrale en ré majeur, BWV 1068
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64adb27b928eab6d8c7d59bd79d0e6ba77be38b9c5891d21f71a5fa69e646b5a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ026680270.
Ricercare 2 à 6 de L'offrande musicale, BWV 1079
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632fa1e7d382fc0e7901fa42af366cbff88f939da000245f57f8ee6a663be4d9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRZ026680290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed10161ce1cbe670df544336f2e9bc6a75d00e4b53b548756622bac2ee1475c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:09Z), 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/FRZ026680300.
Anyone For Mozart, Bach, Handel, Vivaldi?
Largo [Harpsichord Concerto No. 5 in F minor BWV 1056]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebee0d2b345f941835ec08cee81ef628ec0e77d960ca7a70010f2b04198d29a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ026480040.
Christmas With The Swingle Singers (Jazz Club)
Fugue in D Minor [The Art Of The Fugue BWV 1080]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f89dfbc6c9d7eb0f1d2f44b06e94dcbe6b23901c58dd2447fa3b8823fd0c34. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ036304900.
Bourree [English Suite No. 2 in A minor]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c18b397091a8df52dddda004de17e2be6824a2d9efcad74407541056958fe7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:07:46Z), 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/FRZ036302310.
Fugue No.2 in C minor [The Well-Tempered Clavier - Book 2 BWV 871]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48226077d14e7bd345717e3829c9a3e2c78cd9d09c05fa821e9db85adce020b9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRZ036304960.
Fugue No.5 in D [The Well-Tempered Clavier - Book 1 BWV 850]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b343251ca559e8aff9fbc70965de6a459b31c58dbe589c003fd377cd44153. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRZ036304970.
Prelude No.9 [The Well-Tempered Clavier - Book 2 BWV 878]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf688075dcd2d07be7eafb56077adda83a40aae07afe1a3b002e4764e198aad. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRZ036304980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d192bbdc9dd71eda51b8e7736bd6540060e900ebe9b406e938995d201f144d6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRZ036305060.
Prelude No.1 in C [The Well-Tempered Clavier - Book 2 BWV 870]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6de16c80a0d383086fcd9a4be708dd7a1af4933023a6abbf758449d6060878. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRZ036305010.
Invention A 2 Voix N 1 Bwv 772, en ut majeur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8a2ae96ae3e1f3b8f2451a1e1524eca247b9d733bb5a1b5c0de6c47a260510. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:54:16Z), 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/FRZ036305030.
Fugue No.5 in D [The Well-Tempered Clavier - Book 2 BWV 874]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe870d3d236e899591c20815faf7f91f539c41c59057f977fc4b0d61ee4b12453. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/FRZ036305050.
Medley: Deck The Hall With Boughs Of Holly / What Child Is This?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb311944a8b1a037c71c6c3732b2a62b1bed3c88299b84f99bf80b9a6038c9aaf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRZ026880130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a62eea47d084eed064948a5c8d554d56e4f1327a6caae70c187d7ff0b002ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZ036802970.
Vivace: Concerto For 2 Violins In D Minor BWV 1043
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa83092e64bf915235ea63cb12a75d5d779ee414b134483f6a19e0f396244c1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRZ036303890.
Choral De La Cantate Bwv 147 - Jesus Que Ma Joie Demeure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd3562804e9576dc8ce119b31b1c35bc464df52c45606fe4e35866b9d7757b3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRZ036803910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df9dfe0aa8c0b0cf4e6d5d23df72f6fd23a8fab390ac5478938d4423fea0c26. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:16Z), 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/FRZ036803920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3455d8d9fe605863c1d91f32ad803b448feed23a1cf30633885508db101214. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:15Z), 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/FRZ036803930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597f22101d54861b07a5e044284fe68ec8d671b2f52dd478ef39cd3fb4bf954. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:24Z), 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/FRZ036803950.
Badinerie [Orchestral Suite No. 2 BWV 1067]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a42f86fa3c95221acd248b9f493952fc36d0b4be562cf3473352db9358735f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRZ026480010.
Aria and Variations: "The Harmonious Blacksmith" [Harpsichord Suite No. 5 in E major HWV 430]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e52a3474d15f73327babb950d5bca770e7a6ddcbdff1ab494a2388f39fbdd5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ026480020.
Prelude No. 19 In A [The Well-Tempered Clavier - Book 1 BWV 864]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4de69ad298779b75d4bc6bd199b6bc254d6d267b8eaf08dcf37ed9a41382476. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:33:42Z), 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/FRZ026480050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8843fc8b632b435c0daaa60a4396946233936e1192271897e0ffa079a694c8b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:23Z), 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/FRZ026480070.
Concerto D'Aranjuez + Les Quatre Saisons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe018298834f189df7d58af54ac2f08d12995fa84d868a6206784a48dc0e35361. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRZ027280510.