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 0x75c728458da1c15e19e06d63a71b5e2f7b37f36739140225905ba8ffcaf6ae42. 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/5d91957a-474e-48b3-8198-cd4cb33e870b.json and https://artists.proofprofile.net/proofs/artist/5d91957a-474e-48b3-8198-cd4cb33e870b.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 0x5dfea5010cf95cdaf2020c413b9bc123ae4fbf7ac508e940c3c7eaa15bb581f6. 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/QT4K52510361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aac87ede5b49f32a424d88090fdf7b0e6c250211558ba0e8546ee2ed4949f5c. 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/QZK6Q1959333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7555eefbeab2fcc442d19314b0d3ebb16c9e705ac9f034b38a282ba5987d836. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6P1958800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec63763b4653c2a729df0d4359d9dcbb8c147e25777899877e0570743a0aca3. 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/QZFYX2069561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e5e1fee4c3cbc69751035beb3c40f86a58f23b64656b5c0bab32615f451c0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ32013447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ce39ee02b291884e45cb518b96ad47ff7a473ee50970e5bbb9079a19d6c1c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:12Z), 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/CA5KR2136742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2405b6766d8a965a6fa405ca72663e0788c87d894a29b2ba0fb59a20dc64dbc6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:35Z), 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/QZES92158205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f65a09ca4554cb58d6ef668c72bdad7343bd9f63ee870041907d2c7ed6724db. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZMEN2180851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709bb900a9c8c87c12e6513b4a622377f88147c96876cc68719169a9444299c5. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNWW2143187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6dff8f1134ccff3d15ee074d9ebfdba55378e4a6de0f69f2a33539e42dc466. 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/FR2X42204966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc1477e9cab87e8c337655d3c7370a4f91caf664ef470f8f037361e8cf44c10. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR10S2232992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b7b74395c1205306fe66281fed1c1dbc29ff2cd36faee387393740a8213dc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZJG52194518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ede0a917be4e2dc4019b534704cb9bebbc551a1f5d84e866218a55aff2d3f1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX762208257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c6813269b448aa28105538ad9cc893529d4d4a44afbf00b73cb4d601d54ed3. 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/USHM92218358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c1f3b92efc03568a7ad4163d91575a7a1792b78a2a42be8f3c9f6388444252. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DGA052221272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788191f28d9a4a0955d11bf819e90915c3722ff7443f79a97180a829e7c401db. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA072281990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff865c907ba1f68f611fd1b454aed4ec5a8cbda544f6497c3b3466be94b686. 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/FR10S2378846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae3afc6483a8f4ef63cb35125f1b07a2b2db7e68ed1c9e7878d28f6c73560a8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX202333727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b8d69b9ef6b5e1253807e8df0543768fc0db6c24d6a91684039ffaaa2c419c. 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/FRX762311554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d94a8387b7695e53aeaf5b7892e48bad6dcf6a971d2bdf40a3dd8bbbb8296bf. 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/FRX872343883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f56740b8b478844742c9ab93a05734e2c01c7694131df2097b3ebddb03ba45. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:18Z), 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/DGA0H2302610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c988fbd172dca4633f8ce72c486ffe53a46eede487e9f53b0c177662901d1f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0Q2315633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f44fb0d8342cd545b43ae210925ef9f72bce82d8c2a5518bc7f875bf4cd544. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:48Z), 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/DGA0P2424746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bf10e1e51907f483adbea274b5e31c899c245cfc4d6e71040f1c8ea055c68d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CAW112100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c4c71dbdda067ff7ea01dbec9b24c02663d2d5a12ed35772e5810258a931b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ85M2067927.