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 0x3a83f0c1ca41f8dc4ab1ace92dbd9a421a1029487244477bd5ef994dfc131832. 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/431bdff7-4b26-4b1b-a760-6dcc5010e00f.json and https://artists.proofprofile.net/proofs/artist/431bdff7-4b26-4b1b-a760-6dcc5010e00f.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 0x6d2dede6bac8c7884a0e379b3911a5fa82361332a0c288d97074c13b69d8388e. 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/FR9W11907933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b595f621713a6a6a53e68d38fe169dbea1802c8e79e8f8589b22a85a3dc1939. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W11907939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5438ebb0341de00e23a5fb16851e79b548f0edb085e5b590542fe59a5af932. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR9W12140416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342cecd9911d80e8ee838767b1df05dabc0c69fda97c513be724c198bbaac978. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12140417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0edce7c2a4493fe524a4721703156c823cae2a4b8e0b4169efbfbd2b26147. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:27:09Z), 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/FR9W12140418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe86b4b1010c18b56b6f58cdffc71eb5f532001183cad9eed766a385d7c528b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR9W12140419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0dfc65494c4b3b3115dab09cea628494bb81bbfed35b695d23608c6a223e3e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W12140420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b64547ec1e35fe37849cb1e66a412d2d11a38bb2e34a69825cd798aa95b3a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR9W12140421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31793b1fdbd9985c84236d7fc725ce09ff294fb7a2aefdc956354b9df93dd51f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12140422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2608dd44bc29a74639b2dc702d7a674ab956a417f712fa63da6204b22bead9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR9W12140423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970d95404f9f95b43c8be3bea95baaefdb8b4a33d7ff2ceff153c68d05b3b567. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:32:19Z), 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/FR9W12140424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3360266ac7ed1daf03a9af97d765a82ff99cccbfd604b6b2e4c18480ad01f9c5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12140425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608b123cd3f364a6c5eea2492073994f886eb3b8da8aee8709362b60267b4d41. 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/FR9W12140426.
Le voyage d'Andrin I: Le printemps dans les plaines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c16cb0c7723aaec628eec366045fb5e224f0cecf487972637eae8e51a579ae. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR9W12308609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2819fde6cb13418cbc9279fe4865d25b9730bd9d7c14b70201ccc5e12f1ac466. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12308610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab41d2ecdf09e2fddfa399120ca6ff01d149e1350244a82db37d4fc385d1ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12308611.
Le voyage d'Andrin II: A l'été, les flambeaux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04af01aa498038a77ca9c8f4ff182b1c5857a15241dba12b6c0e0b092b8d641. 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/FR9W12308613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef2c876e2aba6cdac289e9ef9715c511bc42be55e6e007319bbfb08da5734cf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:17:16Z), 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/FR9W12308614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb2cb7749482c8fcbc1b2eeff9b53bd8820c1e8ed9f8a0ac06b375f681a7885. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:28Z), 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/FR9W12308615.
Le voyage d'Andrin III: L'automne a ses légendes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81be08e515d6f5bf862ad844674d0e64c6da42c3e4bb578932dfc7e59c77070. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9W12308617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29399143397316da11339c83e77259dcd011bab6efa3b092545d3d8d8c3bbb48. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR9W12308618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6711dcb2f31c44e56d39d5e1fb3467fc5407df5c3a25945ecdf09662261032. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/FR9W12308619.
Le voyage d'Andrin IV : L'hiver en haut du monde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501dba0ba45cec7366c3afd5fa318258f862decdfdb34a016dca7b0c51922f05. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12308621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069fb7b6056178d71ad6cd2a6560995761ac736e8f4d708803982aef73db746. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR9W12308622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60da6880a95212e8b3cf19fa88ac0f037acb710307cf6c097f74bd2189140965. 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/FR9W12308623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a280505bd894ad3ca6e3558a1546b0bc580dd86d861f7f5199d45e0262f380c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12528704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efabe1c24848f1882d02eafccb2e286afeb5013df37b52b6ee81303da7a46fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12528705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc913bde66dcbb8d2a240e9621cacdbf066e68f8731c2b4f63c01d41b07fd68e4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12528706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7902239883015d509af61cdd9088671d464c49dc99378b4f6108fb39ce1fdc. 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/FR9W12528707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a0987d01ee1102c8c3f32375d7909aad9e6586b0c28cbd7628f649d18fe4c9. 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/FR9W12528708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa011def5cfd535dc96c6229cbb9f21d4375425c87414a32370335523c83399. 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/FR9W12528709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f649f985df44211af52604447e7febadd49c3a3776d77e5ca9c8b616c9ad9bc. 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/FR9W12528710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb5200a1d93a0b52436c713c6abf0f51d4e133f5644e3c6395680d9cab356c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12528711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb813227cd4ab692db21f5559acb40faf6f345ed50ba9b6a1da5a9de2a48f8b6c. 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/FR9W12528712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8609390f94ef5f8610b5ee4179dda24afe6360f8af1a0c276d903ad44656da83. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W12528714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4257862210b97065d7b6c6fc7d422d24b03edbc42ac9d357aae2f37175e6ab2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12528715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e3ffbc5019265e8dd86c2deea0f6f2c02a296d62dc2f1c2fabdc48cb1e5a6. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:40Z), 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/FR9W12528716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af110390ff90a990ef09cfd16df5f49ee4f61a0d03d21b8eba8116ec9f7d44e. 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/FR9W12528717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae325c88171042b3c857cd7f5b7d91d5e004bb4f8dd37e1082a2a0e264f65a0f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FR9W12528719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e9f447d2223af9dfb005acda76a2f4124b9af03f61cf3b614ee0dfc08cc3f2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:36Z), 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/FR9W12528718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5137eb99f78f16dad3bbb640a07729a47d3065d225db858bf20e36449ac68236. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12528721.