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 0x3dbe1753925df1d0c507af78f2aadd13a90daca5ad72cc26fc01afadd78783c9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/666d7acb-3496-404e-8bad-77e9763f7b95.json and https://artists.proofprofile.net/proofs/artist/666d7acb-3496-404e-8bad-77e9763f7b95.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 0x7ef21c3d9d753f986b4c1c53e16015e795e05560ed9f184b0e400f6afb3f5bf7. 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/UKG3H2200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfa61951f51b45e8f3f6adaa15abfc267c2b38b5745462207467703325c24b4. 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/UKG3H2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e79fcf8c7d0d57e69c963b67ccf2ee9046f3ace50235fc22683d6f97f322d31. 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/UKG3H2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f4e7e983e030f2ea8884e1495603f648b36ce06821eacdf9476e6d8b67d5c. 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/UKG3H2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ee14e9eb9ab9e0ea8f8ea1d9d976c6062482106c620c2e18feb50eddb67ed. 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/UKG3H2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a9263f1e79196bd28d266b0a90f549ccd451c6ba14afad382675c72d642e6a. 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/UKG3H2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778f84bf78236b04e2df0f163fad77eb46c3f256a890a3a1e46ba5fd0b49b7a4. 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/UKG3H2200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaddbd0ef9840641a75cecc02d96f3cfb64bf04f14d83b69be6358a45b98de2a. 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/UKG3H2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c75c6fefed83a1cb17d15a362c2447495a44e6b4e7782e91fb99626ae1f387. 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/UKG3H1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d6ac45f32344f7d9fe61445c119fbe92b4ccdce1bc17733a2324f3fb2e5ab9. 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/UKG3H1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe460e0272c0f9d655fa64c4c5790fe750db898bb29f135f359e1a94594da6ef4. 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/UKG3H1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db17ef153b6cbe638906ecaf7f20538c493c50306eb280e321106a574e750d8. 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/UKG3H1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc182d3d3c34675d84748b99295e1f6ff487a6875f667620a61a2c7f6a678e30d. 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/UKG3H1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581bd7422ab9fa629e20572bd4da1776247d245eb52d55b562380f451f20d272. 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/UKG3H1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2011e7b79fcc53e64d279df651469bb653b87e6e0834586717834e60cc99ba6. 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/UKG3H1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2da9452d537ee87a390745df7e380d2d47d5a4c199c6f6e71de428d588285. 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/UKG3H1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8412c9375cbeef0725b0437e426260ec5cccdf4c51f21d5315654651ddc7c783. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKG3H1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbab1f5ffc23342af07bfec682a9160864dd2b56f737eb881dc6b492104affdd. 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/UKG3H1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d80912c6a04a849fa84fc16a3e3d0c9b4893bef2a84a74d59dffbc152c62f6b. 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/GBQWZ1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9dc036d0ca88c0e4e05e902f28e5ff389930c0c86f51d3f051e3c4d18ad6d2. 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/GBQWZ1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb791a418453ddaf31485b92036eb4e31fe35726beb7e3babf0490d3126860f81. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBQWZ1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298ea825435856b909427861f173564d1a8d72ab3d56ee3a6825943571ee05a4. 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/GBQWZ1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3c9d936d9754ca7283e57227de3b8b206daaebe63178879704a873a687456b. 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/GBQWZ1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9553ef3b73ac2555e1eedfa2248ec6016aea20553cee4eb647b49b6947b44a0. 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/GBQWZ1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8849c3137f2b1935f36a6a361e83e85b5dbec4d3a172ed066952125425ad9ff0. 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/GBQWZ1300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91174349af2a66024aa0d52ecc8b70901524fc9c48c74afb1778c00c7f4695d. 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/GBQWZ1300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dad03b5795bd08d50cda98224c31e446af88582b2e911e74d1e0266e5f9820a. 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/GBQWZ1300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8861fb77afe8f39156e41c4722e80cb914aef4c58f0d581a1a152a9d8600a31. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQWZ1300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3c75eb1f471cdce05dc3e213001c4b29d1de8ef56e5d488f3dd1dadb68207a. 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/GBQWZ1300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfa61951f51b45e8f3f6adaa15abfc267c2b38b5745462207467703325c24b4. 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/UKG3H2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78962e48f71513c269c9a407ba54c75d6da65230e501e8fb87dbd372424a10e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKG3H2100069.