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 0xc0466483375bf798eed2e8ea43ffff2570ad05f7e34e5eea54182284416ba009. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6609015-7391-40e2-b2a2-3ac32e919d8c.json and https://artists.proofprofile.net/proofs/artist/b6609015-7391-40e2-b2a2-3ac32e919d8c.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 0xe6ed044dc65f0945f95c968cde7cbba68ac51177ef02798ef69efb6fbd0f3dc1. 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/DEAR41621627.
Get Physical Music Presents: Brazil Gets Physical 2015 - Mixed & Compiled by Davis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345269c6ef7758f3d520acd9e710ebb9c8622df0b2abe136c8084b45523a2a32. 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/NLW041200326.
Déepalma Ibiza 2015 (Compiled by Yves Murasca and Rosario Galati)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f6e8b1c3d751744a5076907a76a95cf02d259dad29d6c2432b9a26d63ea59. 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/DERN41400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8db8315bf04658f42e8ea33cf68a6fc513c25c26ef075a279d27f73f1a9147f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEPR32013095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5122fcebbb680e5f6b26460c61e9eadf10bfecb64098aba7ae567859c3383350. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH3131411892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90650da0aa5ee95e58c38f1ac74f635286023418fc2d73bab9da253c565825e2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DERN41400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f150bcdef3d035bbebe6ce0d00c3fc2844f9fcd230ad2b6504a77dc7b92fc05. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKQU1441751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe652aa81a78c02da0c90a7584369a1d24c7c455341904e8bd69ee7a2d78c695a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBJTR1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af89a916cedc9cbb9910e2f6fd2dffca660479c4bd626230b982e3d816b92b. 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/QMUDV1500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99529921e431875b9fc30adc538170ad8abc92de0a331898142d560c20ecf7c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEM931400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93480ee3971fc481a50980773612cca62b6f1b28eb7ef69f5317c17708576519. 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/DERN41500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252b08c14bb30c08060b1ac9083c4e9e95ac42ecc9fac446da9d4c96d6aee322. 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/DECL81300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481890ead35386492cadb2b12f5b5229a65788538cfb182146aa57606db1c881. 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/DEM931400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a749a54bc8f419ffd07f78b8f875e7536f34639df3cd9b042b5b9f7873e56da. 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/DEBE71300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3975ac3734c7f1c2a660f78fa780e63847f78b732509f69d7719d55d6b3da. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBJTR1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dd30ff299d8449abe62bac66a72b235ec32405e9316aaff1302cb043627aed. 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/DETB31668031.
Make It Up As You Go Along - Salem Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0fc23e0447d651d9c9b510f02d96d88d305508fa871e4fcd3aad4229a0bc10. 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/DETB31668034.
Make It Up As You Go Along - Daniel Wang & J.E.E.P. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba83975ca6c71caf952d8a7c231f92fe0d9bbed86e70ceebdde3f5ee3131361f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DETB31668035.
Make It Up As You Go Along - Daniel Wang & J.E.E.P. Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48384e037f53a6a40cf9bfa2d884220ea2a18b6b0fd89e190b6b8da78b8015e5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DETB31668036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40bc16727ad4cd672d8e35f56ba950caac83db51653a48d248559599a25ccab. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBKQU2086830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f7385681791a7da4f6a5ccf402703674285accc0021e6b2bf37429caf107a1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBKQU2086831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822b63e4457767e0248985594a23a407996d95ea8de6ae1411d5f52edba887dc. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBKQU2086838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4612bd2cdd9e2eddbf80106260f977512d056b04d4a671dd6867b0fcd84b64c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ESA011491245.
Baby You're Still The Same - Social Disco Club Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215cbf092ae98a73565f65a96a4f8123ca4e7800844c1bbcdc9583c2ebbf519. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ESA011591218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3d07b59f1c2eba515f9bf1cb0e08550b5077a04d82dc18d2adbb1fa94e692e. 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/USW691300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c018fa398557c1ac8ab54663832e205b8c998042b489689937db6815cac2891. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USW691500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ee05b28fec0fbc7d7c8181854c564df955685856b74bff39b2aa7a996134b. 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/DEY470934104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88086ee958704ad7ab110a9ebf35654b426b9a133a7afaadb3025eacea08c609. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMSNZ1512984.