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 0xdb1fb6e8ad0b175a25b8782bdbeda11036f0d069ea9b9ac2d40e70e3f2aff610. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cc36d34-35f5-4161-9092-4d4fce49f8b0.json and https://artists.proofprofile.net/proofs/artist/7cc36d34-35f5-4161-9092-4d4fce49f8b0.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 0x94d0534d37779bb35eb6d8c57638d0ab997e845844b179549726128085ba30d4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCADN1803958 — a six-check JSON result.
Chapitre 5 : Se méfier de la femme infidèle, voilà la sagesse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdaec2321157c2cbbde784ac8c6c67ad5ecac31fe3558f9b48a27f4cc1c014a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADN1803971 — a six-check JSON result.
Chapitre 6 : Conseils à propos des dettes des autres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ad483a6dc13224fce8fa99454ddd147940caeedb00f9b9a621818d10802ad. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1803972 — a six-check JSON result.
Chapitre 7 : Une femme infidèle est un piège pour les jeunes gens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d57200ef15a9c814e1e272a6cb786b01d2e04ab282c404b6433a921874bca. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCADN1803973 — a six-check JSON result.
Chapitre 8 : La sagesse lance de nouveau un appel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad02ca58fa3f2506cd39fc60598c3d5616bbe4423bfaddd9ec6e7b3c42ba0b. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCADN1803974 — a six-check JSON result.
Chapitre 11 : Le Seigneur déteste les balances faussées
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebc77b4cc615e4b21c9730cf53ba626058093cf35ef7152939a02357855b859. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1803981 — a six-check JSON result.
Chapitre 14 : Une femme sage construit sa famille, mais une femme stupide peut la détruire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea6ff11b8c033efd42a19105a616d54f947cde5fd95aad4c6bb6fb53fdc8e4e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1803990 — a six-check JSON result.
Chapitre 2 : Paul a annoncé le Christ cloué sur une croix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9335aeb08bc82aa1e7cbf7c6785911fa35b426c4f7cb698eff3a1305a893cf2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADN1819056 — a six-check JSON result.
Chapitre 4 : Les apôtres du Christ sont à la dernière place
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f739774feabe2b187c9c7530c84485aca6b185add585fedcba9d35258aabdc1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1819060 — a six-check JSON result.
Chapitre 8 : La viande des sacrifices offerts aux faux Dieux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdd88b9fae8b6349ad257d957f28dc772eb56bb9d2b309186756328ab61f3c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1819068 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9fef246e9a2cf7e5a957a61951bf8817278ee5f1522efa2a7a0551a1eb7718. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADN1819022 — a six-check JSON result.
Chapitre 6 : Être baptisé, c'est mourir et vivre avec le Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef70291b1589d1b96b82f3bf70209e5b5f1b282d79c650cf49255b992012c0e6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADN1819031 — a six-check JSON result.
Chapitre 13 : Les autorités sont au service de Dieu pour conduire au bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f89cccccb628dfc9aa7e31263cdb312034ac017f0ee1e0ca23ec8abebb6f56. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADN1819038 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23549002d24b46348277dc0a691aa062230cd8eb33817559c9966730cdea025. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADN1818963 — a six-check JSON result.
Chapitre 3 : Pierre et Jean guérissent un infirme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed8f4f09d032d4a401d28e68f33f97ac8c934cd2b97a7fed725addf61583e8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADN1818967 — a six-check JSON result.
Chapitre 5 : Le mensonge d'Ananias et de Saphira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e6cd0f8e44b6c6e52ca0a30ea8c65e4d13ffcc2258c8669538f6525d028ac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADN1818969 — a six-check JSON result.
Chapitre 6 : On choisit sept hommes pour aider les apôtres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f71f71ab90fded13b0caf624c2999374e2fd4438e65cc6cf7aa416e718ca689. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADN1818971 — a six-check JSON result.
Chapitre 9 : Le seigneur Jésus appelle Saul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6955a3563fa0850e1dc2d9e0b73b4bcf818e5556ef39d56b412cd6e5b12de13. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCADN1818975 — a six-check JSON result.
Chapitre 10 : Un ange de Dieu se montre à Corneille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb54cbdd6c9823ea9e8ed1633f309c84c514b344a685781c4c4a7c872e00d19c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1818976 — a six-check JSON result.
Chapitre 11 : À Jérusalem, Pierre raconte ce qui s'est passé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1bebdf5dd22e03af6f1f5e6af77e728fbb9d004c58e212187422c621f177ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1818977 — a six-check JSON result.
Chapitre 14 : Paul et Barnabas à Iconium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3f04711b61647e05d942c7582bb5ecc8b99cc456fb6dae8b162d29785f40f8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCADN1818982 — a six-check JSON result.
Chapitre 16 : Timothée accompagne Paul et Silas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217fc3d27629e998133cd100e71f39a49c8851a23692147a1443663aec0a060. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/TCADN1818985 — a six-check JSON result.
Chapitre 17 : Paul Et Silas à Thessalonique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eae7ee058f8cbaa53acf28c2bb182661396ac6ad3d29e0e3aa3f21ca297b63. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADN1818988 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded71cef2199bf401a8c714cfc42105d9548c5e8153fd51e33d0ff728f95debb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADN1819288 — a six-check JSON result.
Chapitre 2 : Le Salut Annoncé a prouvé sa valeur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ec758c848b06c277b72b040012d46ceca20ed0fb942a3a34fb2e975fbfec5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCADN1819289 — a six-check JSON result.
Chapitre 4 : Dieu prépare le repos pour ceux qui croient
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719efab269c5df010131847c2fd9a94dc518e33ab95c9658bda50b1ed6a0350b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADN1819294 — a six-check JSON result.
Chapitre 5 : C'est dieu qui a établi Jésus comme Grand-Prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe9f3c72addde01c467b6f021ff06e2ef7f6f966a1bdbb4dacb2110eeb641fc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCADN1819296 — a six-check JSON result.
Chapitre 8 : Jésus est le vrai grand-prêtre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db10fa690d2ed77bf1a42768c10ebfe350e034cc91526d98070b96a0a0adc1. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCADN1819301 — a six-check JSON result.