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 0x62824fa69fe09c6e294e9d48f084e6caf07830265afe2f07e83e15086b2c47c3. 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/1a17293c-43ba-4b30-ae91-a7b9c2a09b1b.json and https://artists.proofprofile.net/proofs/artist/1a17293c-43ba-4b30-ae91-a7b9c2a09b1b.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 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 0x5a44a7aa8acfe3ddfe93bed7e2745f87ff0b4261bd7815cbd3063995586d5977. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFC2022260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c56e801ca9601942be61733aad47c6195a216c92eede60cc9d1679973d18522. 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/TCAFC2022346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1222f6d6c5447763307f73eeb90b21b49fe37cde616f3bed19cb676d7ea4228f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAET2057936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22e62dd367c65f75cf1d8bee325421b25d58189c4ffa8855af3021afdf902d6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12127212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65de7e461f243c9baeb445c23f3ee896d194008f1966b364d6b04f5be0667783. 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/FR9W12240136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edb45e25e4c7e09410b9c97600f607610c05d424a750ddd994cf3791eb1f30d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12208652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10b99d2645e98a0ac0fff703aada43224d2d7b702f4176460cec111c4702467. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR9W12144842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c87942d0b86d0d26ea1fc655abda8544b2ed581e44c90db2512151313afc7f. 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/FR9W12208654.
Demain sera meilleur (Version alternative)
Demain sera meilleur - Alternative version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a84177196501c8a157d4da98e70e5d7886c6aa841c86fa9c2c1c97f801a7871. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12311920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae115c6e2fd4d91d910c7fe425803936c794109d188d4ec4ec1ff0321b7d5dd1. 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/FR9W12401148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f66fdf8493779f91b4d7bc1700000afcefa6529fed326ba66c7016e5ebf21. 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/FR9W12457707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb37ed4eb82cea025955e084bfa56df9c4ae3b7389b3fd49f51523b3da943cf0. 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/FR9W12433490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae115c6e2fd4d91d910c7fe425803936c794109d188d4ec4ec1ff0321b7d5dd1. 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/FR9W12401148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693aef778d3d92550dc448585c5449d0bf5c665424cf12df47c48f0cfbe67be. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/FR9W12321403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00b1c44b4d36174433599cf474332fad3503f6dc710df822b066bddb14fcf56. 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/FR9W12457045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5837aedca1828bbb5fde077ab620713c4f6f94d9ca76d2a7f82877a4745d6b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12457046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae115c6e2fd4d91d910c7fe425803936c794109d188d4ec4ec1ff0321b7d5dd1. 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/FR9W12401148.