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 0x53c31649737b0c8b337e92fbe4b0a4635028d3d914b25903c5aed7618adee029. 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/1e31cc44-e72a-4b32-9fcb-5147af662032.json and https://artists.proofprofile.net/proofs/artist/1e31cc44-e72a-4b32-9fcb-5147af662032.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
La Folle Journée 2017: Le Rythme des Peuples
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 0x98c162bff758efcb79a9955fe88120b8481c05bd8e2bc8fc043c68a087745931. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621633015 — a six-check JSON result.
Danse slave en Mi Mineur pour piano à quatre mains, Op. 72: II. Dumka (Piano version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6024a2c172982b32cc894d8110c1d70e00518dae5e44c4fe08973d17354b713f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621633019 — a six-check JSON result.
33ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fcf485d71c1b0fdbb004c9e77910d09ba59e7d0d3fb75072b43f249a6bcdd8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621121513 — a six-check JSON result.
Prélude N° 6 en Ré mineur BWV 851: Prélude N° 6 en Ré Mineur Bwv 851
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf32d098aeffde23021f8271ad9638d8a56f220ae7b418d5f1ed990ac84fe3. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620912412 — a six-check JSON result.
Fantaisie-Impromptu en ut dièse mineur, Op. 66: Fantaisie-Impromptu en Ut Dièse Mineur, Op. 66
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddb007ecb5bb1a732e1e0faa2af2c44bb2e9b393031bd2c6f27f89ef4a3f61e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620912414 — a six-check JSON result.
Mélodie hongroise en si mineur D.817: Mélodie hongroise en Si Mineur D.817
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a3465fee19512e5e7254a8c65447e13411e01cc14fd59e0cca111e7408293c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU620912418 — a six-check JSON result.
37ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f4f5a54d9a415a4195e52a6f868da15107027d46d38e5a24046bb1595941a5. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621735201 — a six-check JSON result.
35ème Festival International de Piano de La Roque d'Anthéron
Festival international de piano de la roque d'anthéron 2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb3165894df2e7c61b4f197da4aa4fcd0ff5a8ea12fdc5272d99e5ff0723855. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621014901 — a six-check JSON result.
Piano sous les platanes: 34ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f0e55cf61f971c17d2b55aae95f8e82ffdebb520a5daa17bd6ab06cb24bcb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621425906 — a six-check JSON result.
Sonate pour piano No. 1 en Fa Dièse Mineur, Op. 11: II. Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508055eb6efd78e40a0c0ba34db6f9ce42f7264d68b7dc79fa387619e4ee9ae7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621425908 — a six-check JSON result.
La Folle Journée 2018: Vers un nouveau monde
32ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b09959a24b2bb793bd46b34b6e892d2f3081e5d4f2399ca6a9a9e4a63217d8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621117414 — a six-check JSON result.
Festival International de Piano de La Roque d'Anthéron: 36e édition
38ème Festival International de Piano de La Roque d'Anthéron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264160b2c788be49e2abed09fcfedd06af773f9f4aa5d40ed3a17b255a239cc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621843009 — a six-check JSON result.
Les Ombres errantes: 25ème ordre, 4ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea81f417b4f6bc9628ce9ca2e91db326e133a87e7eed754cd2a5eb2c0052684. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa857495eabc3f6611473bcc652bedb48ba2a77064f46775342a71da0ba0a353. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219502 — a six-check JSON result.
Le Tic-Toc-Choc, ou Les Maillotins: 18ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c613b0c587902d79d42fe2a0914657bb15757c9b86f305cedc4ed29c82d2ec. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219503 — a six-check JSON result.
La Muse-Plantine: 19ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560b41cfcf72a69b5eb517be2a2cf9e3706746fff3553ba0f53eecb76755559d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219504 — a six-check JSON result.
Le Rossignol-en-Amour: 14ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5504e647e1e83fbe6dcf378e2beb2787fe06b8d99518fd1f8bc5094efc5caea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219505 — a six-check JSON result.
Double du Rossignol: 14ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac203d51e4b588eab1a3c78250ee603f7ace43deb5a6b138a26239417911ee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219506 — a six-check JSON result.
Les Petits Âges - La Muse Naissante: 7ème ordre, 2ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe03dac61b9f018baf664ec4da06d13e3ac287562686aed8d9ba33dd637a0780. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219507 — a six-check JSON result.
Les Petits Âges - L'Enfantine: 7ème ordre, 2ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e47250183638d29f5130924d7d54f966d4222c1d80110f15b6fe16f5ca061a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219508 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bbf29a68edb6b94eefd6397dda739382e7e303594a426b86bbb0ac255f66b3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219509 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e10888c9428fcb87c7fb5dc2e25b626e86519f091f14388eb5b1ec929ff820. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219510 — a six-check JSON result.
La Petite Pince-Sans-Rire: 21ème ordre, 4ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2229ad07e147033e0bf7865d77a55149e511664477c9c917f9b3d9467e3d94bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219511 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6157adf5aa79271915bb2384acad10b6ec460a0163754644b0679f8f4b2cf721. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219512 — a six-check JSON result.
Le Dodo, ou L'Amour au Berceau: 15ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefff7948cdcc335317d3c7809f71e7b10d99ed927f7ca0604fc9d7646748439. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219513 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f9afe47c5b22daa34f495d7782865b653f979a8bbfde91ef93cb32a2fe609. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219514 — a six-check JSON result.
Les Langueurs Tendres: 6ème ordre, 2ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5624a73638555ed083cd3467a3401362843e1df31763195355d460620ec2f4f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219515 — a six-check JSON result.
Les Vergers fleüris: 15ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0356678781e318fe32127332fb310a40fae446ec2e8e9f97273a6debddde109. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b5abd937620cfde5eb0571b422632b023007108dd32a3d0f8db3fc76338b6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219517 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4173657b17b68628995b269472f57a81be15f2c8fab20fd49d71c533eccc9b08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219518 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f782ff7547666f3586364c84f36e99356c6e6eaffb2e3c31e4cafc0ba080117. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219519 — a six-check JSON result.
Les Moissonneurs: 6ème ordre, 2ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1634c7c2614cf943e04d2060d065208fcc8acf36cbf2ea948746b2370e8681f7. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537aebc854a8c22630bef9478ec772a5e171f123a6ae52da7ed020364beb899c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219521 — a six-check JSON result.
Les Fauvétes Plaintives: 14ème ordre, 3ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c577ca415fae4b0199ff03b388a137344e777e4fb2b13d364187f0e4777263. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219522 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525e2c5c6225031b417de3b394b2732077ad4ff088bd8f06a7c578e8165fe32. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219523 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06379fd4f588bd6b8932ac4d746460790afc1dc18f11ed88b5d0a1da396822c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219524 — a six-check JSON result.
Les Baricades Mistérieuses: 6ème ordre, 2ème livre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1563a28f85a5ef98190186b2a13d386713e9082ba82271af2dbaae286450c16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU621219525 — a six-check JSON result.