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 0xfdebc05cb47eaf8b34ee4733a1fee530fc1e74bdfb39de4995113439f4d07c91. 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/8d6f87dc-1caa-47aa-8c32-faf12d2b03d0.json and https://artists.proofprofile.net/proofs/artist/8d6f87dc-1caa-47aa-8c32-faf12d2b03d0.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 0x36c5599441e51aa9b7bcdf70492fbe599c13741151e93e770f678280ced50fa1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:14Z), 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/QZDA71840134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af4968ae169c7b3ec9e97698177b0003dbeb4871af51d79fbd8863090b7f02e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:07:11Z), 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/QZDA71840135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3ac438e2e91d32a837de7f26afccf10b068d9abe8c1c9b1a2561cd40db463a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA71840131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7521f66b262781a5a4a2d347a3b06f73b626f1191b83c32731cfc299cfd037d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDA71839674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d5b5dbae3529ed48682137ceafd6ae61b3244ab16ff6b2008c37581e35b493. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZ93L1814176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7908f5d268d8b88d26dc51509a83a7e61b24d8eddc63d1f0ff424ac9e34b46. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAEH1989123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53895b1b69298da3b2199f1331f7c3fbf3986cf2e9b311ee97a096ac40366f09. 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/TCAEN1988160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7586c67faf0639abd65dad3a6a88410c6e98ba92ef425cd6d7880b7ec59ee87e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEN1988246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3f669bca5c54e3994e606bb28e408fdb670d6fff12fbe88d5d0e4d5099fa3a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:24Z), 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/TCAEN1988299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae07908e67954f9cc36c77c7bb088ca6839118145de48f9239596d17a8faeaa. 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/TCAEN1993374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52e0865d1393760d3f12e704c7bb08ec935a7d9c0cb2be3b9a2ffcfc2fa505. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEX2036697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f0a60f19ece26dc4f4f8dd53c5169e58f55f1860a026d05d9baee83e4807ea. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UKXN22013017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17d41486097c8ded23cc507f3618484901d5e68389fe3885d8c7d327a0f3821. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKXN22078511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a363fc52c1653f33f7c12e37293dda7d33190b42e01667ba3f7d828f7f2d43b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:07:20Z), 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/SE6QE2440274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be224ecf5ca88dd1690af6d2ee5d4ab7f2203be5a8f6089b8f793573a7ff1fc. 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/GBX721900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ab01bff8a943a3a641d3b4dc3b5aa5b5dee2b5501348fcaa266a530dfb75a. 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/UKXN22098487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ae0e2ced74ca2af0364ad1ebe0f7c75a001af6538895e42af30492005848da. 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/UKXN22098494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8eeec0085a66573432d3181e974c2e188ac43e2fe054f90db609198bc75407. 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/USUYG1313126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208d1c1a846b7eb7717d67c1ca0b19f5a646509336f9e20333fa10cc8e80e112. 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/QM4TX2024737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e9447c57e1a1454c1f8eed803b5f2787b7a946e0449060fa75e4295ef1cb3. 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/GBLFP1942251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ab01bff8a943a3a641d3b4dc3b5aa5b5dee2b5501348fcaa266a530dfb75a. 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/UKXN22098487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be224ecf5ca88dd1690af6d2ee5d4ab7f2203be5a8f6089b8f793573a7ff1fc. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBX721900545.
Gr1zzy & Stickz x Fumez The Engineer - Plugged In
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d0599d482bf8aab5d4c8e7787576fd7d5accfd627d99e5a43528b9981c26d. 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/US23A1552905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164504d75656de48df70e7c15c8ead41ea26a1637f40da2ba9938e622145afc3. 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/GBUM72000784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98f2fbce239559a39697a6673c97d82a9ba362c924b673f422519e6fa8b5af. 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/ZZOPM2106043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4e40eef70b8db4e7d6dec2196f653dcdd38d1b236c73bcc92595dd143c480. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:33:41Z), 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/GBCUW1900016.
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