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 0xd9a0e7e8a4012c1ac2fc5fad87f001398a8bb4f715c033226900386dec36e749. 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/60848f38-2051-4102-8359-424cea467c86.json and https://artists.proofprofile.net/proofs/artist/60848f38-2051-4102-8359-424cea467c86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Pera al Borgoña Con Crema Americana (2016)
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 0x7832c29e3551c7b785f3bc47f4beb7192ac550b5851d7bb274908573fbbc1027. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ARKWP1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33e865c3c5f0371518bd02a985e22702778adc63aa28650f053b11a487272bd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARKWP1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4aad5134797180b0a8f3b8f8b83e251027912ebe44010756d86b93e4a20618. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARKWP1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e47c5e6c7f1e4514c301f73f944805aa064d2f0b20577084bdb108ba389004. 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/ARKWP1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ced450cd25563cc261fccf24b3cb99c982397a88c6d3fa8927dc50e16571a. 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/ARKWP1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b792f923805925078dfe3b48b3baa5a1b420f4c329d7e0e853a3fdcb713bb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ARKWP1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab3f158745b9647409b49c6f8a2f235c2b3a0bcb72c29b2a06e711086e412ef. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ARKWP1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9c515fb8fc7529d575f4efbcb58534bbeeebb6e356b8850655ed0361b265d8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARKWP1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d69a42802907431069efe1a40ac6ca2487eeb409716a92ba944a743d98395. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARKWP1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc312f987b63720eeb53a62932ad1aa3507b746a292cce10dd763ed970d3dccd. 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/ARKWP1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f253dfaa93377617327b551755b6f593daabc47853f2c95d731133c6602c6. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:53:06Z), 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/ARKWP1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3864564e1809c99b4d1db7f2950d8194eb3d6abcbe0d9f8e1cedf38ba4a820fa. 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/ARKWP1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3203bda5ad7598795bbd8ee997aa2739632988e3bb6edc4adb5aad9a5e4f6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ARKWP1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2232c6d47c548f2468e23ec6a28cbe10bcc129179ea846811a79be54ed8a18a2. 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/USX9P2485045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afdde014ee5f442842b0d3ef6e613a2269a2c56320bcef8576450e60c736fa4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USX9P2485046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139994609494370f7f877a87866b6bb40a07878f697c5f6cf75fcaf7c4161a26. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:47:01Z), 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/USX9P2485047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80563ef2dc5cfd4c963055d3637966734ab17fda63da21ee19dd22d4d8ef0c04. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USX9P2485048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ea3ccd6e0c2298702a98f95c16c492daf003b68c9d58aa70b67ed80d41f98b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USX9P2485049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8bfd9e3054d4c478cb66518cf9829a551089a0a7df20e1ea62a4bf65ab29b. 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/USX9P2485050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4959f3724fc78c6cfb6b13e749d8eaee269107665c23a5ce520b2db59504fdf. 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/USX9P2485051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35f4d778665ae42e1b9eb9263f318467ce20f7525b50772f3c2e98aa93ec5a2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:00:41Z), 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/USX9P2485052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a725f6456a7b3befcba96a1b4d8146f8ea770b28b0cc96f353d6375b0e04f41. 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/USX9P2485053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f614e19b6a96eb9d7c718d62af3ede7e31efaeded4f5fc98b8a6be7fab3cd85. 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/USHM82502007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee058fd67bb268c4ee201fc5d7ad9d58e78f2ef7e390379b594f863c22612aa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USHM82502008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcf9ac2f1375e58f6bf0f4b76867dd77f22024a1e5f34568c6d94226a577dba. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM82502009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee9fb349abb1c40329da61767b12d65532b645938b5b0b641149e4f36c72c8b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USHM82502012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfcfa1d83c3c100ce3ba8ded90f23a93fa0b31ffec8db21c14f5b3d79227c18. 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/USHM82502013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99e7af79cf1738f52ac9c4d589051409054df889bab838379f95503fe2139e3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM82502014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b5fb9c373789ca370f04e3cd6fac29a584d87537c3f753ea551c33e8a39dca. 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/USHM82502015.