{"copyright_id":"0x8fa9ac03a30c2dbcb0c422a5286d4763388f7bbaa75b5f03286aafc5c252d423","name":"Choeur des Carmélites de Pécs","registered_at":"2026-06-14T06:02:41Z","symbol":"NIM0361035","token_address":"0xe2fea4bcb92a5b4d8210ded311b0bdcded02d5fb","type":"artist","uuid":"0f1ca8f5-b483-46cd-b052-7a3a3b2af572"}
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 0x8fa9ac03a30c2dbcb0c422a5286d4763388f7bbaa75b5f03286aafc5c252d423. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f1ca8f5-b483-46cd-b052-7a3a3b2af572.json and https://artists.proofprofile.net/proofs/artist/0f1ca8f5-b483-46cd-b052-7a3a3b2af572.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xe479256ac42dc72dbe6ecfbe9dc4b6e8af59b54d005e291fef96a1428e3d39f9. 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/FRX211408001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed20cb020d465c9765beb338f5455fb6eebbaa5083665aa64f3f7a4696b1063. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX211407001 — a six-check JSON result.
Recercada settima sobre tenores Italianos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6688482f95dbeae046be045ffb296a983535f398b72231f3f3c6fa1556027eef. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FRX211407003 — a six-check JSON result.
Manuscrit de Las Huelgas du XIVème siècle: Benedicite Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365ac5b190c560aee6f87476bedc4155ec1bae014d11522b75e80baf06362767. 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/FRX211407004 — a six-check JSON result.
Antiennes de l'Office des Vêpres de Sainte Thérèse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be61271785bb9bbe6714c2b30d0a7b3614a3bfd2ef8867d84376d584c8cbdfa. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX211407005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d44e3c387cfb22ee2e9e65b3b06c4ba1b440c783d3143431a6d2904ff64ada. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRX211407006 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c78d2d870062827a66462e4d2bf9a853ebf100aebfe43183065f911690ea49. 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/FRX211407007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feeeeefebb1e8e23bca99bdaa2e354458df980d4c90ff667845fd872002b539. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX211407008 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e19dd8d92e1c3cde37d27431a1cfb10ae807ef7c008c0bf4f4f48401235dc4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211408002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad583cb3e00e64e1c5f2adc8c63be41540a4f1eb9af892cb5ce4f7b5b76284e. 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/FRX211407009 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5491f3abe23ae940d6d10aaa70355b2b98b0b836d3251fe7af000540df682f. 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/FRX211407011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5e514a57d00a18a61aeaee212841cebfbb1ecf229370a2e98f2f4db2e4b5e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX211407012 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee2e83fc628ed8ccc4937a5f1c95e202e032a4bed64182ecef1fb250b7d2b9. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRX211407013 — a six-check JSON result.
Lecture du livre de la Sagesse: 7, 24-26, Omnibus enim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f57e625c497b4f5886d9c86d1a3e7acadb0b067f13bced739bf6201b7c7689c. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FRX211407014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9a23ebcc8222e53f0d4e3bbda906859819607b012d83cc7397a6deea541fdc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407015 — a six-check JSON result.
Lecture du livre de la Sagesse: 8, 1. 5-7, Adtingit enim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e392683c5ce49958b1f9fcea3c673d689c634c218b0ed620d9cb4d571272af. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407016 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd337e10cec4bc47046ade4b0aaee4faba2328acf254e9e1cf07d47b8fc70bf18. 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/FRX211407017 — a six-check JSON result.
Manuscrit de Las Huelgas du XIVème siècle: Benedicamus Domino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc29c1426a0e8a8a784078c93599f240f5a64ce50dc7c9729342a7301661cd. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407018 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cde8ab6e40e647c1dd2c6bd300b0d3dc8c08383e3c40f7c1489300bcb17b8e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRX211408003 — a six-check JSON result.
Antiennes de l'Office des Laudes de Sainte Thérèse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82899fe53c03a176b0300c70f60290ab27d4815a059da748c55a8f67be4adbd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211408004 — a six-check JSON result.
Manuscrit de Las Huelgas du XIVème siècle: Ave Verum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79aea29d90ad86365b578ed1c44f68d55c34b98f5ab2a23c44202bde6be4855. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407021 — a six-check JSON result.
Antienne de Benedictus: Sancta mater Teresia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba289fed8e3a00402ba976e323fb78150de5996c00d783cae2de602a2012106. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRX211407022 — a six-check JSON result.
Antienne Benedicat nos, pour le Credo de Saint Athanase
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a279372958fcdbf93a62fd1a38d24dd82461d74fbd89108b1854cf1dec419d. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fadd0ea2d0bf9d670829e254e044fc730ac49b74349a3e8c3b0ecb2d675f38c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX211407024 — a six-check JSON result.
Recercada Primera Sobre Tenores Italianos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952bfa79b6cc5d88818bb49156a6365aefbe66efa1ccb9dc64cccb2353e95e23. 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/FRX211407025 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28112568f5d4c6e228c2e3d1441729b481c647aba791ca6b3a02bef6ad4fdc39. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX211407026 — a six-check JSON result.