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 0xa6035e40f979d3a728d84feb27bf4991452de6f0688837e6fdf67074b334f4ba. 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/3f813533-8083-4199-9c32-96bcabba3124.json and https://artists.proofprofile.net/proofs/artist/3f813533-8083-4199-9c32-96bcabba3124.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 0x9c2685bbe9f61b22725c477b7ef6e75d4db5a01ccfe869587b320b1c7f9f9fe0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AR5TB0100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a19b27069a8579b80f4a17f3408fa39f2cc8d6340d9414080a4fd1d34ad5d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AR5TB0100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e70ca45909e4c2b733b87334e29d23d8fc411a005f1111e7395b7a1e5853db. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/AR5TB0100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0f142363f1c67979f2f439f17c431322151945e8c4bb31230282e901f6ce5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AR5TB0400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ab9e8d99e0dd665f6b0cce40490438b9e05b68aa120832e5ec38c64f74f341. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/AR5TB0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59940c3a60ae16ae3d28ca75f9e7938ac1250d961c0be7b4a17a5447dd0890fe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AR5TB0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5934830f54ee150bee4164436245ddbc4b6ed342483eb99ddf05c41172a2c89c. 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/AR5TB0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2c778889cd496757127acbb00cbde2b36629e630d921617713edd928e48d68. 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/AR5TB1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b75be809b5c7a78350e8be8ca98db8f71d7ccbc49ac2e405ecde62a87adfe5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/AR5TB1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5647fdb77d32105e0e62e1a2285cfff6308b2c142706bdb702183f25ac0d7f7c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/AR5TB1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a2983f8deff272bae38c478739a6facf0b87fe7a5a1ec0752fc477ac50829. 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/AR5TB1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc69dde8940262efa813bbd242b58a48deaf5b7f70b11c774c42e5267685779. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/AR5TB1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d2213209fc4090326e0f405ee8331cc55d0c3e5f36c652de0c293e6b779dd9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/AR5TB1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d7a50aad74dd0e5de320812b240240bd00a13f4408ef4c202c89e7ea6a4c4. 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/AR5TB1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71210b47b071a2590274154e0c77146b14b10f4085982547672d04d1377c8a9. 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/AR5TB1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9862f2e1009fa0029459f43021a001d3f2db39195ca37c90111e45acd2f892d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC081800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db762611c0551c9b3031a703e0ed73984f06ab9d32518ce8cdff232fc3cb086. 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/ARC081800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978a64f328ed2ce1de03a38c78f6d300680f12f6fb9498157bc83d2758c13a52. 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/ARC081800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d6c4b1303185cfbbedf5b929350fbf96cbc28ff9980280ed4a91f37426035. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ARC081800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe5b1548b07523eb772e89cfeb58f097f4e6bfb0a2e257efad09fbb6279a11. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARC081800022.
Hay una Manera (En Vivo en el Teatro Opera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797617bdc86281aa6e1ad53deab65aa5d69f3ee2dd7a8cc306ae7c2086104475. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ARC082000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52345634f61e1847236171be1cee4832199aaa06ddf4d9ae6fe851b3b5ed08d4. 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/ARC082100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204389106ab0285fd51a28036b9fb147a9e49301c1314971373d830bfae731d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC082100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d350f8723d22a707cb894db57bc4fe430a309bfd667c2f5db532aba2853074f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC082100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84590ed15c6829af7fa2cc1b7a026aa75ddf9ec612208ef943177b2fd0c34a6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ARC082100057.
Mi Barrio (En Vivo En El Teatro Broadway)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbb83d1d500b5caae0cda45abba8838634f0d4a26910a78419538085c55610e. 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/ARA492400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29437514f4d68b029db647c534e9d56efb5fd1be1bf6d9102681b53818a71b17. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA492400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd559c336b4468de232ed21aec654ef1a66d4fa09980c60bf21e35a2a8961f6bb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ARA492400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3fd3ccf7d48f6cb7f6f2ca862b19ffe7d8944d87cd7975307fba0a6164fc43. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ARA492400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10292fab8c4abed13be5d9e59864b856ca87e01044a2a83ea5a95f0ebd6af0. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ARA492400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071849e060410b2330746ddc5cdd2073f77116ef86ab507815de9a1f5f8fb858. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARA492400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1049bee62ac269ecbbc07939ad7d12968a70ed60a155399f62dbb15a4faaa897. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA492400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bdc39fc9314c823563bc8a11996c5fbe32d1267265106e05e46ab6a2e59555. 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/ARA492400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a8ec2058ad41bdcff6d23fbb1e64811f70974ecb2e17e4fa3aeff7fd88a429. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21599947.