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 0x69911214e0e8dab64aa2d1fa2da191250ee8c73eb140d39744e4338ad606dd80. 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/26b22ce9-cc9c-4b42-b085-7e76b1c86dab.json and https://artists.proofprofile.net/proofs/artist/26b22ce9-cc9c-4b42-b085-7e76b1c86dab.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 0x5db4137a0d7f7e57d0684701ef032f840efda8ba09ee109901fc8db5a90afbb6. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/GBKQU2066476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f05a5070d27913832b45ecf970e4e22f1c122136a8dd4ef0628df5282ac844. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF711807064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b8e83ee7bb7af10308fadcc08a92c269a21e6911629357ca80fe146245bea0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF711806910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e23c8db41417d9ab0374573e9c5b0dfa7f1be2d95650ece084dc0840415db31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBJAJ1800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f260fabdf9d300b88ddb916506a951291add7008dd3d1b86d9a82bfc4f496cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ1800677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e086740e1ddd9480830758616fe9f8988baf386b8487afa0e03da0d05a6e2b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NLF711806417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339db5bb42ff3547608968cb05e9bf68c9842e576ef2160b41583c1bb290df5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF711802727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d666c5b38536ce317d4ec314a80d2529347a293025596f9ffdfeec9e0b8d6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLF711806088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8eb88d091a95d99192077b019fc03dd4b774e2d030cc076a3354dbab1d9484. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF711806759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1960a0b2667dd2c25140edc7b65a42cbb89e2697127264dc3f1cd93a72a5578e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLF711807319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8802bd4877d6ad9c526553be0ab548e1b307ed2254b64e46a4bf64b6eed9e7d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLF711804860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ce20057c2ee44173b815560162a745ccc8a1a609f20303f0bea6c4b80474e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLF711806363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9326ab07095ac23d7e7d45db962df078d26d6919718cd4ddbafe5aa864ba38. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJAJ1800198.
Armada Deep - Amsterdam Dance Event 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616820ab4dc5c8bd1ca219bd0537345e075d263475e0d748ad982b577f8ab52a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLF711800890.
Chill Executive Officer, Vol. 1 (Selected by Maykel Piron)
House Radio 2020 - The Ultimate Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c4734d7cafbb52d8abfa9539255e241a05356b359bc4ab541f562d3cd833ec. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/GBGLW2000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4c08ee3f98530b43916f4bf2e10b137b7313208aed1ff5d1b1a2a2057a413f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLF711804476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2417109607b7066b52d09d8d3ef692a8bc1a599316f5d288e7e4cc66ae64a52e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKRBV1800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab33eed8efd315d1ff2a9bdc4ee775b25ac6bfa157b62ca4389d38a0a938ce21. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKRBV1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52529196968f6a5bf7d8f08962d085a303f29b3c49da91bff575de57feb5a653. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKRBV1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc583b3977e8d3d485e693d4bdf7e98cc417f722159f84025558324f151eded3e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1447495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da17bd3b0305fa34a3d90ba97e3bcdccbadff3feda81cda212de08c0d8c05fd. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBCPZ1407857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee982da332e4b98c6792ec4c7c861e12378ca338feb90d498916196c0a414ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ1400412.
Happiness Juice - Satin Jackets Extended Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0c08ed5a3b9fbfe99efbdfe6cca7c552f3703dd99e924e371eb00fed11c2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEGL61400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce29446ad2b4212d73020954cffd5d633d27196c4780ceacbb9a5d1b8903e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCFB1404226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524c1fd647d6dd728e16897db7d8e0d100adfead78f5394b6ea6d6cd5ba47c7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBKQU1475767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69eb5d98eaa4657ad69c029e13341e786ec467776c7bb1844c51852e9e6f59. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ITH641080084.
Back Again Feat. John Turrell - Hot Toddy Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc44a75b367396cfc23e54cce50f6ef46b31ce7f74484f24174b45f5cb6aa4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBFBC1401188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f2e4d38c6db8aef67ed291e9ca8ccfba351475ab37195ec6fa2583dd36f650. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABZ1441527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab45402464bab90c0baf821f342400e84ecdcf6a893c2bfdc1ffad657adeb37b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEN581400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d05d90a497d2e831d97970765af51d57421435e81c46c221f3908f8d84c12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ1400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c60efff5b2fd028f9af4584652bdc201f39073b6a41b90a2b8d1bd094f8f484. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBJAJ1400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18bf4cedd40ee6a94deedee6fe253516ce1b179fab583375699c5d0dfd82f4d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU1435288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa721dd9a369f9689451d9c7dc2e16bf3d35ec9516ff4026a20d5ab7fd9af2c37. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBKQU1456727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e933b4e262b600bd6438e4a2a0c975f735543aac8704d51479b175a59f9b8c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJAJ1400420.
Found My Place - Vinny Villbass Tropical Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9bf30af8346066626352acd04fcf67d6463d21a9c224011bfd0c98caaea45. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BEN581400400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7203c2b97d312a0d1819723d8f7a3ad391f79d062a5dc6559775f542fa848f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK4JN1400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406e8a7966bbb0d2662f0497f52b72b2f0b9bb73df2ab704d2e9cb3eaa66d10e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKPL1415332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8905d4db7a8459aabe73d7bef3754ced282484798ff0c4faa00fc29e33cdb9ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMGXC1400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b09543eb700deae980c47ef137a9cda0416c1ab7b308007d40596ab3d528d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2328779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803cfde39b582cc782c281e25813a6125f0f855b73bd65a46855f81ee2222161. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLF711804475.