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 0x695ddbf0a42c58c8d9d65876929a5597f4fe3444fd38df5c85370411e646ed26. 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/123c9060-944f-4c1f-8cd8-87e63ae62ab9.json and https://artists.proofprofile.net/proofs/artist/123c9060-944f-4c1f-8cd8-87e63ae62ab9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Papilou m'explique la montagne : Comment naissent les montagnes ? C’est quoi la neige ? Quels sont les plantes et les animaux de la montagne ?...
Papilou m'explique la mer : D’où vient la mer ? Pourquoi la mer est source de vie ? Qui sont les habitants des mers ?...
Histoires de princesses: Cendrillon, Blanche Neige, La princesse des sables, la belle au bois dormant ...
Cendrillon: Cendrillon a beaucoup à faire
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 0x5ec487c8624c47ad1c6d29bac3868b36d80dcc3130ad88049a4ef8b015e5078c. 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/FR6F30301480 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e7253539be99df3a01aa7883127da791318550781cc177a568a2bfc6281603. 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/FR6F30301520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e5203f0d211ee4c8453674f972fcaddd2b489a7503147da7e7c384ea0d746. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR6F30301500 — a six-check JSON result.
Blanche Neige: Miroir mon miroir (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44334142cbe86c4d0aeccfc317a254c42ac38450775fdce84ca58aa53c28bb3b. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR6F30301530 — a six-check JSON result.
Blanche Neige: Bel oiseau, bel oiseau (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fd63f7e2dcf4cae0becd92f9667a5a27a5138fd6fceaa683a4553630815c7b. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301540 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55604cfbe08a29e7f2b7ad73b55e01cc7cb7991664a5e267f79b3b7903d2198. 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/FR6F30301560 — a six-check JSON result.
Blanche Neige : Nous sommes les petits nains (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17fb6bdd035181abd8dc6a1f8cc2bf3c92dadd42b053c292b26485864781e32. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/FR6F30301550 — a six-check JSON result.
Blanche Neige: Blanche Neige est empoisonnée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c95af9d26fb25fc5e01c0623bfb80efc42e515cd709b28c01760392733bf4e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301570 — a six-check JSON result.
La princesse des sables: Le désert torride
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9568a9aaca0eac069825a1372a0ec07aad59eb0f1a2b2f9498a4c0fa167950e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FR6F30301580 — a six-check JSON result.
La princesse des sables: Justin (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2321a1b873ce80b13c323936e21c81a43258d7f2dde3de53350cdfb8d5a104. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301610 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbf884792340d007604dab3ea4ce93567d36bd1580f2fe7fa6f7c75516fffa9. 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/FR6F30301590 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb883f2a809d8e4b1b4e4d0b64d15683d362cb8e3268c07a434d07fcad6e5e86. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301600 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b8b2057e3ca889bf84fd3a8202a29c918a84e5969d55f4e7e23a55d978a54a. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/FR6F30301650 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ae8c760823ab25b3e8e9d1dfb41e912066c6c7fca5bffb6a2e6e66d650fa55. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301640 — a six-check JSON result.
La belle au bois dormant: Comme c'est joli ici (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6458a517d36f9c29c0ad880083867972f4076a5576b69bca5e996e368e85dff3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR6F30301620 — a six-check JSON result.
La belle au bois dormant: Ecoutez cette légende (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a14bee244ab5f6dfc38de8e06abda61ae306a0d74645ff567bb5dd30a367eb6. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR6F30301630 — a six-check JSON result.
Histoires de chevaliers: Robin des Bois, Guillaume Tell, Saint-Georges et le Dragon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12aa72356ba01b8e1898d68fd55e60eddae1cc03f083f3273120967460bf2ab. 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/FR6F30301660 — a six-check JSON result.
Robin des Bois: Devenu chef des hors la loi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35185a0e0123b5f240bf441113cacf131d27ec7597981460c4bd35bbdcedbc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR6F30301670 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3014d60b3200d413ca27986d2438078c0f9c058c66513a003110c4e9dec5aee. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR6F30301680 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c3fa851808b13396c473adaf1ef40656994e9f50e622a0f3171b6190b5e69. 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/FR6F30301690 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7957315d53846312c697cb1e8fa4e8c63086b48b22f8ad7ad6fc83c03838aa13. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/FR6F30301700 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636f5db8d440d3a88cf93377151dbb1f7de3bbcc414216003ddb23ea9d4c7e3f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR6F30301730 — a six-check JSON result.
Guillaume Tell: La ballade de Guillaume Tell (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccb1a8104be4039bea0d36dbecf4fec39a35760726a9ce963f126e49f377835. 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/FR6F30301710 — a six-check JSON result.
Guillaume Tell: Prisonnier du gouverneur Gessler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5276b289a638accc3d57a2a83e82bda8a4c643a4a2fb253ea532d541e33ff2. 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/FR6F30301740 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b0e2e19a9b923f9d042631a6a4a59a366e8dcd20554fab93dfe72662e8204. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR6F30301750 — a six-check JSON result.
St Georges et le dragon: La légende de St Georges (chanson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d5c3aa4582cac023f37e5d64e1ba19a27040fe001f20e0907a62152f7d86a4. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR6F30301790 — a six-check JSON result.
St Georges et le dragon: La nuit du dragon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3056ab027efc93ad323048015d4591699526c6705f7eedce8c29ca0dc1793f5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR6F30301770 — a six-check JSON result.
St Georges et le dragon: Georges surprend le dragon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32ca53e88a345857b17ab3ed359ed8e41a75929444f1fd566516daceda33778. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR6F30301780 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a38856879c4c04b8d471e77f8226117fd4130fc05be30541239ebe5271e04c. 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/FR6F30301800 — a six-check JSON result.
Le chevalier Bayard: le pont de Garigliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08014915f7b22a53cdc9be847ef665b073d10f1a2420c64203830e5f13bca91. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR6F30301810 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1378bc183462f36710651536d8bf0af074f69863e56ba7fed4272cdb2e9d4b0f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6F30301820 — a six-check JSON result.