thumb|Collard at the Flâneries musicales, Reims (6 June 2014) Jean-Philippe Henri Collard (born 27 January 1948) is a French pianist known for his interpretations of the works of Gabriel Fauré and Cam
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 0xc6c3aab59d0c23bb5fb99c4311cc67ad65b407ef8c8e685966c05e832930f93e. 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/a39282c6-ab3d-4c63-880f-d7f411ea0b5c.json and https://artists.proofprofile.net/proofs/artist/a39282c6-ab3d-4c63-880f-d7f411ea0b5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Erik Satie: The Complete Solo Piano Music
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 0xbe38a5376966b8567a5190d93b0122f4143699459311ee262de7a27f7f60e4cb. 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/GBBBA0200530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee3140e617550705b7f8995562677395b00e33db8778ddf6097bb7e2602fbf0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBBBB0105501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f715b476ed81da5b935e69ef1c1f38d2dbe2ed0374959602a39698728e9893b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBBBB0105518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1ec4986fbfa6aa41af93a71d295220922c90d817f5c3cdee564ba57cd44a3f. 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/GBBBA0100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea456522b583674fd6bea297e39f23b5aeed34fc96f66e4af15109e9e3f1939. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBBBB0105502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaf5ac75600630a21eed3fa6425292469d2ec856f841bee70c3c9e3ea4122f4. 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/GBBBA0100134.
Sonneries de la Rose + Croix: Air de l'Ordre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2408cc0b02e40d029e195a5144fd7ffbab757efb0ae1bb39a52e04750994610. 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/GBBBA0200581.
Sonneries de la Rose + Croix: Air du Grand Maître
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea646e807305941523a762103f9488a2ddb4ed36477c91f96941392ebcb0ce. 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/GBBBA0200582.
Danses gothiques: 1. A l'occasion d'une grande peine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae7b3b523707b83832c398608174cf976178472b97f78fc78c32914be24f268. 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/GBBBA0200591.
Pièces froides: - Ed. Robert Caby (1905-1992): 2. Airs à fair fuir II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cab52b1aedfc068b8244142367d24c742c23c2626136660096d5f925a8f367. 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/GBBBA0200512.
Danses gothiques: 5. Pour les pauvres trépassés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19de8347aa5d1fc2151ee174b47f962cb46f447cb8768bb68f08d153e52637af. 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/GBBBA0200595.
Pièces froides: - Ed. Robert Caby (1905-1992): 5. Danses de travers II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe9b60b144ed4ec5cfc5ecc5f6c1eb94fa5f011fdce6439699924e804222ce. 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/GBBBA0200522.
Danses gothiques: 7. Par pitié pour les ivrognes, honteux, débauchés, imparfaits, désagréables et faussaires en tous genres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03164100b1faefaaad0f545d25fd74635b421fc1a6a992f6167879f2cc6f3e7. 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/GBBBA0200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9871c92498af75ba0aa69fb963b90ccc304b7c43d43679d9f47710e82d5a07. 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/GBBBB0105515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c89f595a2d91b047320f93813ad2d3a6feb460f28ec2aa5625ff4b5cd37662. 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/GBBBA0200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e96f8d7bea0d8b905324861b9d0374effe3c501f661f709b2cb0595027e212. 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/GBBBB0105511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe1151baf305fc24df2c86a8a02c0630f6400f06ede84531509529db16bacba. 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/GBBBA0200620.
Three Nocturnes, Op. 33: No. 1 in E-Flat Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa220e8277411a900e45020a1adf34d097bf355eebcb104c1d2bd28bf598be944. 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/FRZ117306342.
Trois morceaux en forme de poire: No.1 - Lentement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691c90ca1568251aae2ad6e07b1ccc1bb70af39171e6bb5fa6360d0a1ebf5ffe. 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/GBF079811760.
Fauré: 3 Mélodies, Op. 85: No. 1, Dans la forêt de septembre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a321bcf2196857a338536a843a341695a4f768f26db5e7cdeea4a1245684e6. 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/FRZ110701534.
Debussy: Violin Sonata in G Minor, CD 148, L. 140: I. Allegro vivo
Debussy: Clair de lune and Other Masterpieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca8f7691c9096aa18a1d94cff857b52ae19fbd660bb65d4c5cbb906536fc3ae. 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/FRZ111200641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ad4daa1a7859c1f288e67c6b458605891ffbde971dab78afbee20f471d2c14. 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/FRZ117706388.
Concerto for 2 Keyboards, BWV 1060: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee61ea32f2ce32364e8f689510b239297b37a017b62ce1eb1a7e1bd88e22ba. 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/FRZ110601629.
Piano Trio in E-Flat Major, D. 929: II. Andante con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2dc9c0281fe74e59b25d84a5874abb044c62375bf63a6c60e1203066fc0f00. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRZ118201433.
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 0x139b72dc60609ce5f03432d43f67be445fda82ffe7b905c0d0fa398c41549a3c. 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/FRZ118200890.
Trois morceaux en forme de poire: No.2 - Enlevé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f1a4fc2aa07dad1d64f8e3685a6476e25271118e3235ee2b7070623da6874a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBF079811770.
Trois morceaux en forme de poire: No.3 - Brutal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca146ca7944f8c146a6628cbc3ed93c0772cbe21138428942e8b2184b9fdb30. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/GBF079811780.
Fauré: Morceau de concours pour flûte et piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8daeda413ef5ba772a407f4167cc2ed0c50bd09cab6001f59f66373ceebb699. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FRZ117706403.