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 0x626bbcaf8be2609810f9de87aa4a3fa019c4473d311ea48223a66e6d9a1589f0. 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/bf7f2c78-f222-4cf1-b8f7-8be973cecf77.json and https://artists.proofprofile.net/proofs/artist/bf7f2c78-f222-4cf1-b8f7-8be973cecf77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chanson de Noël pour les enfants avec LittleBabyBum
Apprenons en Chansons, Vol. 4 - Travail & Loisirs
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 0xee8ed228bbd064301e915b304ac8eaea47589b2fd51dc5298efb72afb72531eb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKP3G1900546.
Apprenons en Chansons, Vol. 1 - Compter!
Apprenons en Chansons, Vol. 2 - Lettres & Alphabet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe27fc2e0aa2296d79bf9b9007fe3054e1e0fd698c2fe620cbf5c7fb11df524. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:47Z), 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/UKP3G1900530.
Dance et Jeux Amusants pour Moment de Détente
Apprenons en Chansons, Vol. 3 - Formes & Couleurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bfb213ef91de81e40a9686e50e33308ee433dd686c2a98eacb1b46131b80c9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKP3G1900529.
Chansons Populaires pour toute la Famille
Routine quotidienne, chansons pour enfants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5379f571f4c0a073622a054adaad7ba2d8df1efbcbe1c5e3ef493fd806fb8e. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKP3G1900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a4472440e00a7b6b71ec0f01c4edd23728bdbbc50231211501526d8071518f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKP3G1900717.
Je vous invite à jouer! Jouer avec mes copains
Les roues du autobus et encore plus de chansons de véhicules
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c05f6c0aacf1b513d12fd8a6903b68ebd119b9a7a61b0fe768e11cd4016eadb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKP3G1900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b19eb1388ed77b2f5f2c5ea46a3f71f5bcbfe8f9abdb4da62cae5d7da14d6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:30Z), 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/UKP3G1900523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99db3ccda99b9c55bd6129ece7fce110e83ef8bf0586fd536ceb6232c1b64a9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:32Z), 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/UKP3G1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2817fd912e8427ad96a4720652760e1edfad4219c1bea43326013957440ef4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKP3G1900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f48e954a8aafe3eb38a8e71c65f16ff7e2d45faffa01664b1ebe2fffbbb42c7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKP3G1900745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33b12bf2dc482bd903788bc42ae9a9a3cdf8de175a7dcf98c96d43c79d08d93. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:23:42Z), 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/UKP3G1900515.
Tête, épaules, genoux, pieds (Chanson pour jouer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1f5fc0ee82d42925795a8d29c150f69429f821584c7bbb5da56fd7d252ed14. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:44:49Z), 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/UKP3G1900516.
Chansons pour enfants avec Go Buster, Vol.1
Buster bébé requin ( jouer dans l'océan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bdde31bfc32eb4efd4967f1a9b6462a3e72efd5c1428e1dabb31272c5b28f7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKP3G2003147.
Chansons pour enfants avec Go Buster, Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd58e6d2fb92f04c0a700faa0d434bd55d185399420255c1f1c0b0b2bae7d12. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UKP3G2008225.
Comptines pour passer du temps en famille