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 0x554fe40f9040fe1d46c2c23b222949b61dee4d6e33d965c19f6670e38542b669. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23109f15-bfc6-4be6-adae-3b065964c958.json and https://artists.proofprofile.net/proofs/artist/23109f15-bfc6-4be6-adae-3b065964c958.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 0xf7d57748918802b208c1b3b160a178e27645d09e28cd4ddc219de77723f5f42b. 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/GBZSB2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b5396e5eb83783ce582dc033ea512d7b9130a4199cf847d40e6f6d2925f0c. 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/GBZSB2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ded3e5498a1157a248eefa688d63ab5084aaba7684d0e2f9f721bd3033746c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:14:42Z), 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/GBZSB2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d8abb2827495697c17085dfe3249e5185e19a98bd8fd07ad2ff3f0416ea07d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:59Z), 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/GBZSB2200001.
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 0x2a382cb4e704a78a42e60c326b038a72c89f05f61981b89168d729f0af147a23. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBZSB2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9681de98fb3d118ae5489b0427e979540d35500c9933f74132c05bac7fa0ca57. 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/GBZSB2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaca6e86daf57342b3cb6365be7606310b3d25286369dca55f504929abf3741e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBZSB2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dd3c4301aab85a6dc44a626c9b30f5e4da4b77ed238fa02c53f6be1acca397. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBZSB2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf416401d911396050c3d2c566b71ba268bb14ef50e509fe87a531162c0bb9ac. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBZSB2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda416114149d92292d21a563f933cd3003a6f3bf39723ae922944715b46626ec. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBZSB2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2528e1d5f9a1d597a19cc11463e6a794f3cc2a569795306800b57e5237609b9d. 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/GBZSB2000008.
Two Minutes to Midnight (Bonus Track - Iron Maiden Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb76240dbd07377a78ea06b76f992670946d0fd7eb6f69dfece016bc7cb9b08c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBZSB2000011.
Heaven and Hell (Bonus Track - Black Sabbath Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0531e1cb4071290c4b39fda9428fe3b44c13112131860fd4a0852af7e711f10. 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/GBZSB2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57315b3b7194696ea994247e768a65d38ccdcc395664abb90e4e857d1c56ee6f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBZSB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb92d65b2b01f5789d6e5268721cd418ab2b6769a48f9f4a3b1ffe6ab8cffed. 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/GBZSB2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c46ddb898e56ee6a77fd95d312270f0a6b754b88d4eb289ce2ec209302119a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBZSB2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3dd89cf74b6207f46e8b247464d9a9664edde8a962d58a60728d34c72f130. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBZSB2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26e1367c0519ba8a6f9f9fcb1eb65ad6cc9bcc884aaf76fab9b642d17101ee. 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/GBZSB1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98face38380c3f58c44c7e30d704cd6a10666a99f8184d2a19d6a5df6f93faef. 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/GBZSB1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e34c856452fa71a68eae0e3d170609df88ce87d22bfafbd614a2e1eaefe16a. 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/GBZSB1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788519c52e2996eb63a3743e087b70da7f08505a1038eb4a480c9506180e3478. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBZSB1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678534a17b2c00be7533e3d47b679ddcd913be5aa61ee927899212c58ae7d04. 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/GBZSB1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b57ffab53aa47de68966a69154e793826ca8d33aec21d7f2d73e8931f42bfd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBZSB1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c43ca0928528a6cf830bd733a7316aaf020f96c7b5ee6ea3a0a8a0023bca162. 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/GBZSB1500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797541ff2dc1fb04946147b81c066d3b9a6281c83c08e35d593bcc80d93b089f. 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/GBZSB1500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff545ac4ad34c164f77654e788dbc20e7ec04fbe60b9f24f2491806ce74fed. 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/GBZSB1500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a15362bd66c87fa04f9da7045ea9c31561bd73288ba67a708824f61f8e08a3c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBZSB1500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291da53caeb297a88c99c452b357dbdb9289bad1cfc1fc821396420e64e86c9c. 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/GBZSB1500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761ffd7c8d2c3d8833687da10892b8d7bd73cca3ea3ff91586f55242516ac10. 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/GBZSB1500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b37263254d9325ead440a120b737513d39b62a42ee0573d2516e7259270d86c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBZSB1500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f45ffd4649ba1445de2c88ab28f3d802356b42592d0f289589adc5b5988573. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBZSB1400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66acca8311eb7d8d9ce80cf67ecf0bd5ef37237e1970a202578bdfd2f15eb66. 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/GBZSB1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbedc7ab79f26dbff9f5fe7f951c41059261df811a04d8706399a61f9283dc86. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBZSB1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a549f24bd81d198addcc973ab9ccfb648c9929163cf7dc19886601e4f638dea. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBZSB1400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ad72b31481a85dddc5e7abbf6bb198464876117e38f29296fab55254146ac8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBZSB1400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a3c90efe975b107502fe2e4dd85e06b72fd27764b222b8cc9877fe48ebd61. 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/GBZSB1200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33924fdceeba5df742bb50e239abd6aab46d18f1ab0c29a98b740f57d5efd727. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBZSB1200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159406d6397ce94867babd547c5544264b886cd2d0c46156d2eb4a8c62a8de6c. 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/GBZSB1200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9fabc686890718593a068408c09ddd5c99f892f3caf4054cb4ffe8777a3d0. 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/GBZSB1200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab79a58ec5cc72cb6e1c8801a4e842f309eb89698f4763264bb2aff36f6391c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBZSB1200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f797c29014e8a0af1818c0147b9574c35b9a03dd28067f24cc97362f9d118. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBZSB1200074.