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 0x75ad1419dc6951be29d74de9a90625c4f776c14d1778889ec0449a7d376fa206. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/557af0f1-9d15-4699-bc24-be1c80fd8592.json and https://artists.proofprofile.net/proofs/artist/557af0f1-9d15-4699-bc24-be1c80fd8592.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 0x11629fca1dea3b9c16973568bacc354306938736627c9152c0344155c22786ae. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLG620423575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28271fae284e6f1ff690fba7e4bc2c92d939f6500ad63eece83a55ec286608da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620423582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08987eb66df822441223cbb4b8ac64d2d00f97c21073c7c03a82d7b91a03cfff. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:18:39Z), 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/NLG620423583.
Écouter et Apprendere - Les Saisons et les Climat
Écouter et Apprendre - Les Tables De Multiplication
Écouter et Apprendere - Les Jours et les Mois
Écouter et Apprendre - Compter Jusqu'à 100
Écouter et Apprendere - Le Pays de L'Alphabet
Écouter et Apprendre - Les Animaux De La Ferme
Écouter et Apprendre - Les Animaux Sauvages
Écouter et Apprendre - Les Animaux Domestiques
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee416d5e64baeb7900d9a2a5544959fcb91f744bc64a5530e9282210f45c1f9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/NLG620423519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5901a8c0d5626ec29aa62cb8a1ea6d98f681c78550947318ff5d5cef6064e063. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620423528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4763691b69b19c71150f2f8564e2c474d00dac99bfb7fbd10b107dd0533888d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:36Z), 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/NLG620423531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7d2fc989f5311b554d0c351e90d7ced0287944c0e14a0dab6f5f2b2f3494bb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620423532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1210c19fd54e1aef4a2fbb730d5894a6a3408d99700a3af4b69c3db02e727733. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/NLG620423534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b500897a51ff2416bb58fe37b0804deb6d178e2f8064112be8bc8ab7591d31c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NLG620423538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c1aea7ca3cb5e8e41f3799d358d486a28145b7384f9fcfec386e260178552c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLG620423548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a348ebcaefff6393a08266a124336a83b30504e89a26bba7b39f250d2441b0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620423549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ffea826d1000f915a33d7f7611ce2f90eedb86e6c7f9be95a5764e82f3298. 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/NLG620423552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a343ad75ca7f3fd1fe4a19dc59b1b9436219d05bb1de8c5527e03115d6af. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE37J1504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca04aa3927e35356ed495107a1fb6db4dc904ac6ef75104f3960923718b0ee89. 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/SE37J1504602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9579a58405c7845cbcc770387d2d196a33886901f8114286cf46b260b712533c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE37J1504617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5d33e89741cbd1136354d107d031857aa41fa1fcc9987c7bcf2f14824ea45. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE37J1504595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb674c668b7ab4a697c2d06fc4e029ba239728c9e5a52a65127c7209a2cc7480. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE37J1504598.
Bob l'éponge (Générique) - orchestre de cordes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611cfde0cc92f9e92d81d35e7c64066da0a3a2642ccab522adaf53a8cc6353f8. 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/DETL61406061.