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 0x8d5d7410dd0cf4035ea45edaf47420c4fcf83932d168e49d778e3d318e29ac76. 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/cd79d4a5-6a7c-4c8b-9e98-d3c41c0ce10c.json and https://artists.proofprofile.net/proofs/artist/cd79d4a5-6a7c-4c8b-9e98-d3c41c0ce10c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Unheilvolles Lançon (Ein Provence-Krimi mit Capitaine Roger Blanc)
Stille Sainte-Victoire (Ein Provence-Krimi mit Capitaine Roger Blanc)
Geheimnisvolle Garrigue (Ein Provence-Krimi mit Capitaine Roger Blanc)
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 0x86f4ffc408ea2a30abe27023d23d703f7a81ba04e7f2ee1675eb128c7c04c0a0. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM20559707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc994ed4fa4b54c4b9f3c397746f8645f6e7e7f5706e7d6b26958590558a8a858. 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/DEWM20559699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545311bb17ce8c18ff835991b774032b30e1ad695dcb99e126b3a30c6de670e7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEWM20559718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f597cfdad4ff8e16821f70abf3c3b7a713801e47311f990cd795677a27051f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM20559737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d45b55b458d5e5a555064d44e22ff1c3aca1a4ecee28da6fe90dcafddf9c0. 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/DEWM20559695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e4fad0a629de87ae83ba760efdfa0d6555f5e3389dd52b389ef6d07e558948. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEWM20559738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85a82442f4e03853213709e18c2c7132007d84c1216c1d50948247f1823623. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:20Z), 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/DE1JU2261752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0fc44171ced17956174764a7538fec10731c370f0e6fc662ee65752e07f5da. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:35:51Z), 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/DEWM20559726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26348083e7c0562612483afa0af41b9b98256dc47f81b842ff299698014c18. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM20559764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc627ddbb08450a6ee9003f4044db02300ce3c94e23d216c4c3d0316941658. 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/DEWM20559715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048b3e9d2879ec622f7653490d486ce7282d5599db824ad5cd3e3f2755afa415. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JU2261758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe753b241d13d2a51fa4293cd13ac64e6a81a570d86090dc5f88a9966216b73. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:52:02Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JU2261754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98af27141121b0265c8e0819e797d555483f5aadc2a15d5d79710b6c970ba95b. 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/DE1JU2261736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d5b699273121307f35ec5ad83ce222a272a6fa44e94e1b0ed498dcd9678049. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:34:46Z), 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/DEWM20559834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d97250240e1472bf9e8dc0b49684dd566009a1f4f3045697ef3f32e6aaba394. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/DE1JU2261751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd612d942b12bca70629ef0aae0036fbf034f464755b42a7738a243f8daa08. 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/DEWM20559723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475c120e7f78daf4c3a1d14e5e8201aaa6cb6e15ee7df62cc096d2b1c2a272ed. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:20:52Z), 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/DE1JU2261771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e1ec565deaf5280c133386adc1a60650f598ce16a53ac23af701fd98f29209. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DE1JU2261748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc45ee42bac9bbf723bb3ca5f0669d368e30816940efd8f915b059af00472bf. 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/DE1JU2261765.