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 0x9266dc75a4c2854d6ed74e0d4a1fe39b5d54cfcd4ccef3332506c720395671eb. 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/0aad82cc-e1dd-4e98-bcc3-c7ec9e6bec07.json and https://artists.proofprofile.net/proofs/artist/0aad82cc-e1dd-4e98-bcc3-c7ec9e6bec07.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 0x5470457cc6b5ffee527c42266bc439abadaecdbf4b54853d2e21ef1f180fd9f9. 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/NLCK41045084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c0d67e5f43387944645f7d3e16fc9ab8ac1743c499c9c98d57c4b4e5e5453e. 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/NLCK41045085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2bfa4e63d9217849d3a00caa7b9c5f0a5e43b8c4a0d2eb32c4e327ec0451c2. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBRF52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc6b1b1c62c32f6ea325e490da197d6cc57b534a518f8b95ca1a1d7fd93814d. 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/GBRF52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67845378e762d726c60aed9c5116ce9ec858d17053990c12e15e8a4adcac1df0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBRF52400001.
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 0x10aaecf547aa14dd734468f22130fcabdd9f1096110ad3a0bcc919dcf3aee150. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBRF52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ba053008499cd9e25c2a673b83986f4bf0dd78ffc8565a4d334c19f357ac73. 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/GBKQU2321876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7735475b45d67974a504685e352de1b5255e7d9758d8afa790121687494d69. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBKQU2321878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35565aacf1db92869064c06dab74cb16803f8653d9b6e4338910ac62cfc3467. 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/UKGHE2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df17ad54d8239fc7188cb45770fd7d448963d4bff9b6a37320bc950f998c7f. 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/GBRF52100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72c228836c85c20b634d1609499a2079e60ba29b4157e67b04ce30eb2eb913. 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/GBRF52100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d466ebc393f6683b235a7a074e9cd195f5fc3dcd9b94b5eb354268065ac8da. 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/GBRF52100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517fa1fdd08cca787b513cf4e7f957c0fc1d7f0d52110f10bd03ccbb262a330f. 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/GBCJY2000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee5e15ebd2056b1338ce233d0a93dec57bb1379150117d663884d55856ff731. 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/UKGHE1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90495eba27cda14e4ecae636271a38fdae45c6a4f490594fb9d0112cf892ccc2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UKGHE1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63099924c8416d18f17c251608f7449935ebc1f90edb8314655bfc59d1ac21d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKGHE1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6a61ed5d66bd5126c5baec5b0853641f762230644aae3f276e2e6c3c89bd36. 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/UKGHE1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b137ebfce00b7a4f4dd881b775095b8b757e5a7d4c331160934fb567cff873. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBRF51800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b38742113c96f3d78a8298338f1e3d79bd56e07eb8156fbe543faa0ac949669. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBRF51800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e310a3aeb15f5b6809a1a071b2bb3a7594248acc57f22eccf2db751116fae95. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBRF51800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5465c6e7bcb39357792bd267ef8d0f71d9aeff258b4a02fb140bf895225401. 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/GBKQU1872114.
Something About You - Silence Groove Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81dd0eb3fd8006f0cf8b744d66d05eff92003d5d0b07d56c42e8e44eb068cb. 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/GBKQU1872115.
Something About You - Low:r & Hiraeth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ef2c8829e49dd81ca69d23aa074d86ef5e06595bcb74f68e4f412f2c7afd8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:26:47Z), 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/GBKQU1872116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48c0ae3a55ccd3fa441cbef8fc27d3b8f6bcf722d7ea5064cfcf7a2b8da2ac. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU1872117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2882956659f4987ea1e7a76888e4c9ae14ab70f1cd1fefccb7fd3a1ab0f90b. 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/NLCK41043360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a336b4d2f7b7ebfabd7a0eb9ec5c528dfff68d0024b2d7b9829e1a6a7697417. 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/NLCK41043359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd62fbec97a0e54f75177f145db9c60e6c0ea46784e02997dbcbc8cffcbfa2a. 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/NLCK41043361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72964959f5bc3b3ad84b4c57c2c65b4d72b53f038534a97c28da01c77735ea78. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLCK41043358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabf9fcb0e8d97ecc1e676cc4e8d6e2646014653f3208b7febc5d1636bdc4fc9. 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/GBKQU1716593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1204a80236db2641fd51aada1977c23feae7f7b07e8c88615e47de49b6a7b6. 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/GBKQU1716595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d0255344e11a71166bdca614643d13171e2a256d2f10c2d3a69f72c362bce5. 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/UKFTL1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf90ce06b83adcc0f606127846b8875ac5d0a2cd8a44035fc0c1c0d5d0ba392. 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/UKFTL1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736277b6515d7d71eda44e0d62c9476149aa4e6929d4db682fe9b4fe49a5866b. 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/GB6TC2183001.