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 0x387830307a63d702544c6e77acfec2fbb71d9cbd5f1c73630a63c97bb40953af. 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/133e4f3c-15e7-426e-ac3c-3f46d57682f4.json and https://artists.proofprofile.net/proofs/artist/133e4f3c-15e7-426e-ac3c-3f46d57682f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bloody Headlines (Original Motion Picture Soundtrack)
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 0x26f50251de5a3eb750f564d9f52c329d6a7c9c4cb59b23ec73e974db3a7f3ca4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6M2342285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6637edceb3d097d1ad6e59ce1a51beddbdcf8251f30330ad9736ca823b8898. 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/QZK6M2342288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a19e9f1603b9e5e4b1b04a9ba63f4ad165a15b362cf84640e831944452498c. 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/QZK6M2342289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db234949a0be4606557b3ae955c2b38cfd58886ff62dc1e9c8f8504108da57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6M2342292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4116cc6673145a3203f3422c30bbbcf8bdf950a2b7320048b15dc3c65d4cd02a. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZK6M2342283.
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 0x7567c36d405fbf3169c5699a93b78804a023063dc775f23ac2e2df3f3d0465d6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZK6M2342284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff7c9b0cb2ef61dbb8bd3edc17303ffeba65684ad442c00b40941d4869ae42. 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/QZK6M2342286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da0760de6dad979d1be10512dea92920ea51189b4de83544204d3fbaea75997. 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/QZK6M2342287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eefcf67be7a1bdf14ba808761fba5c1c580811ed3a1141e4523ebb26f45b55. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZK6M2342290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015fc2ed1d2406e5e2646b56cfdf2132a66a5e476ee01f7538ea05fd01ef1bac. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZK6M2342291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e23a5061f4840991844d9365a117de2bdf493a6de91472b4f86095e0d7c1a9. 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/ES64E2312403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8750b6b78bb8c21cb5ac610e0a81d04db12ceb16e9a19fb83947436f8be2ac9. 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/ES64E2506079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe195843d763e5cc997200f4fc192f75677e0a7b05e0f0a0d2f3746aac4fb4813. 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/ES64E2506080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ab45d04bfbbc2d8fc60a793d64b02b5059c5bfbf9a52f1a48413c652176de. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2506081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa860d278b481a91e5dac00efe77484906209e11e2dbafbe229eda695dbb3bf9. 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/ES64E2504469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50350da27a3194c9689938787c58ce6cba240b4ee8baa81ac412c493a1c93653. 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/ES64E2506093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a386fc3c7c2afb3d137e44f6aac353c357317b6122c7b06080fe7985de0440a. 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/ES64E2506094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4bc0eff2eef63c3257edcedb5c4cfe9fdb6e30313819d5cd37fa6fce381409. 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/ES64E2506095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1cbe3433e8e1928fe38d6b487e62d5921f64d97078d67e36f9cb15b82f8c04. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2506097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e29e24dc2f568d77c75f8353997c765234e0e6d71bd698dbd1e0d4eabf862fe. 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/ES64E2506098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8077721744882b776ebb82f3bcfbe31c163616535fd8045c2a77192642e4d3. 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/ES64E2506099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb014285532cfbf75b2ab18489a7fe9de2cb25fe702a4d50daf7482c01326fb24. 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/ES64E2503231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f2e9077c1428435c8773fecf49a7ba4a63d17e4d69f5233bb7a04d0c398855. 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/ES64E2506102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c98a10efa65cca7e4ec762182df41662e91b6b76b0727ddded05679203275d4. 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/ES64E2506103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47f6aa66d13b4f6142c4eb40e6827074e16ab0893267d17e0f11ef01d6a01e2. 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/ES64E2506104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57bbd87b39fc4e0397252b32b426a1515485b6904d033baeb4e59411d7c54fc. 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/ES64E2506105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67111cf5182d5bf05f3e98dde476866731c7be938359464837b337978a0104bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2506106.