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 0x7e3f236e07973ba01dd4cd10e5ea3463cd29b89b9802fca8bc1a9e22ba23e93e. 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/3ee97d89-92bf-4d38-a88d-459393326277.json and https://artists.proofprofile.net/proofs/artist/3ee97d89-92bf-4d38-a88d-459393326277.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 0xebb651705520342ccb2c09e502e2114d2371b2cefa814504d4101078d94de80f. 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/FRV770400177.
Cantata BWV 202 "Welcher nur, betrübte Schatten": Sich üben im Lieben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17fb1559dcab9f2a6188e3414a1a7db38c64ae95ba2aef9756dce16753e6535. 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/FRV770600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d8b47335b4a4d504b25199fa8c59801e9ce50485ecb43660c20c694af1210. 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/FRV770400032.
Regina Coeli in C Major, K. 108: Ora Pro Nobis Deum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46bb5d41cb02ad55bc5b96f888ea4641aa7d2a08946aa25a04660d2bc033054. 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/FRV770300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e9975a0b1f11f9df7409fec5db406666147680ec79ddf55a81e1c67ab24599. 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/FRV770200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba964bb7d03bfaf4869c9303ee4d9f2f4e51075438be32f961b3b40dfc19b2. 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/FRV770300009.
Le cantique de la vierge Marie, Magnificat
Chorale de la Maison des Etudiants Catholiques de Lyon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10995f6630acbd4ba4a995289c07b0785152dd5b6db441b7bb8b132276bb8632. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRV779800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b99d19b1baeb5e8da55c054874c5848e4573dcb9435f4e5e3ef13ba2d442c74. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/FRV770200229.
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 0x0299561f2c6f2b05a1fa7d473d131b8a657a6543ad6d159086a243581942b9dc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRV770200217.
Magnificat in D Major, BWV 243: Quia respexit... Omnes generationes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dc42845091218a6c0fd69c61c9246437defcf45bfe30e61f0db0d2bc034537. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRV770200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1826cfdb593cbc6f284204ff7a4ca10941c130687c1b8a85432889c8f22a89. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRV770200223.
CHRISTMAS - Beatrice Gobin Sings the Most Beautiful Christmas
Merry Christmas - Les grands classiques de Noël
Ave Verum - Béatrice Gobin Chante Les Grands Airs Sacrés - Vol. 2
Ave Maria - Béatrice Gobin Chante Les Grands Airs Sacrés - Vol. 1