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 0xf6e86349935daedf4bf1966cc0b5586fe264386971c3805db9f93859ee103625. 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/e0904c95-1681-4c9b-aab9-5380f4b3ed98.json and https://artists.proofprofile.net/proofs/artist/e0904c95-1681-4c9b-aab9-5380f4b3ed98.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 0x5e415243ea13fd6d2f7986328f5f753b2fc2d53c2aeac5aeea7d4f3fceb7bf96. 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/FR7EH1811001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83304963ec7ee22e1e85db5f23bfad8e32b61c89aeed287585974664c1ad2611. 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/FR7EH1811002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a0f42500ac188077355873e94d473e3c002667ffe39b93a6a2860d4dfb0d49. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR7EH1811006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2017f5b26d79c229aaa715f7f49e8ff2e61ecfc96e56a161d47b688f529470. 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/FR9W12456017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d2b7dfb8a3628b5fc8c78239a8b27490288eff58d25574d8fbed1ebe69982. 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/FR9W12456007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cacd11da4af1ccd9e338a45cf84398256ab68527015645f74cf8a2bd43d99. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W12456004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b46556e549a316fd0a84128df2c12b7e2454d0b76494e4e434c83f95986e1. 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/FR9W12456003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3853612e8d1736a08bdfc093d5534c9039edd25321e02c998fbcb4aaf0ca58de. 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/FR9W12456016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dd3770948eed91e287c82231ed476b0e9bd95abd2d4a54effdd4ce7bce0b6c. 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/FR9W12456014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b46556e549a316fd0a84128df2c12b7e2454d0b76494e4e434c83f95986e1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12456003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7cacd11da4af1ccd9e338a45cf84398256ab68527015645f74cf8a2bd43d99. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12456004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d2b7dfb8a3628b5fc8c78239a8b27490288eff58d25574d8fbed1ebe69982. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR9W12456007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f07605b29b19acc9f1a23ae5a1c8f8291843ab7d0ef18d2c04d89dda1bee2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12456008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dd3770948eed91e287c82231ed476b0e9bd95abd2d4a54effdd4ce7bce0b6c. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/FR9W12456014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7564a86b6e2e95fce784cde43dd74e5021c972e04d57415d583a64cfa1e58ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12456015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3853612e8d1736a08bdfc093d5534c9039edd25321e02c998fbcb4aaf0ca58de. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR9W12456016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2017f5b26d79c229aaa715f7f49e8ff2e61ecfc96e56a161d47b688f529470. 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/FR9W12456017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9aef153fe98182a987c80e2477b30297df5cb7858ffa07f08731e40d60c28. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W12456037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ca6e3307a36b39471043e05c9681775e989aa538fb154781d1c28edb43af5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FR9W12519400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4028f3e06510c08040627d23351677c6ef086031db926834690e8bc1a04731b8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR9W12519402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31382c529a7b623f8e45857e895610b54635329dac8b88f87433cceff2b0a21a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR9W12519403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dbf627ed54b241f626e263f52848beb5c3f3afa58f81424ea688e1d4fe4506. 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/FR9W12519405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad70a7580605b3b71a085977215b50b717d957cb82453089444f63ad6fd20d08. 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/FR9W12519406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00465555f792f9b06c6875d06d4daf83896f4aa63b50df656b78c29a8a46f3a8. 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/FR9W12519407.
Thunderstruck - International Guitar Night 2019 Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c2fba07de166e35239e9336a8bab9c099b50e1f557f8cf66f5a71514810590. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DEYD42111130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a34cfb7853860afbd1b2b0e4da19577e89bf95fea99149c8e1c86f436b8031. 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/FR3NN1611005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ecfd03f1adc11ab6afc92b2f2ae0a1e0d235bf4d8a9764c004791b0f33cf8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FR3NN1611006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc865d0f26d56954f0544b6730e60444873e8f2cbf85c685279b73eef45ee9178. 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/FR7P01800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6924df27da46f87745e6aa05a1b18c92a74e755cd5d378a6ad9f7d168768b421. 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/FR7P01800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3146a0f5602a15c4dde914d9b44ca24127fb2378c2cba3a3cb9074e3a5991. 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/FRZ092300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caa346e0534098c969b5978caff661aca53c8e7c0cdd8de5339418f776b13a5. 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/FRZ092300072.