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 0xe86829bb9b1e6f1f51032458c4c68bce2cb5a0a95bb85af99a887bb13679e4c6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfba6238-e1a8-4362-92b2-e91885cf4682.json and https://artists.proofprofile.net/proofs/artist/bfba6238-e1a8-4362-92b2-e91885cf4682.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 0x29acf8412f201220f12fa70cc4d662397ebaa2749412524176c2e51f92191899. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWW2253886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dffd46bbf215ad1d5b5d728ecf2b8e1109b4209b180a7b6e2293f62ed711a86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:12Z), 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/QZK6L2438409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5620e69812be6d629163aaa56caad7d3679b6a4de3feb4e278772a02a622796f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6L2438416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd095522fbcd42cd46a63f882b32f0e8b022c9097d042a8c83eae44c2eb8895a0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:42Z), 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/QZK6L2438410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f4294119a4f84f0ab858986f19826af0ae86ad3c2e6d5a825ce5b0f1b319e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6L2438405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db2d541ce630ad376b6ad3cceeed9447d731184900df8fdddf98808b8fd2b61. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6K2414389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f141ed0fd69c633529bc15fa5db6f63e68e1055023485bc06a1c82203e431b6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6L2438414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f87225f5de39b0ebae40013f276a9ed62bcba5884023eee0c49e02872248065. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6K2414961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bfd9d990808290a577f10e2008b13bacc5bebe2c7fdeb69dc1ef69f92543e5. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6K2414959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c430cb4dfa750704692083a059b0471dd510a4dbfe29fc691a63e2a15b0fb. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZMER2264266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b643f89e7bc2761b59468f9255eb499bea2f4125d724d61aa006bc4c7dc9d8f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:24Z), 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/QZK6L2437967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22d50eb5fbe61fa2d6f1b0017252a5899abecdf6031ea0853b6de622e54199f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMER2264268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee8d82302d61437b5698fe0aa6a36fd35fa987f62ce02551f6ce104e60d8dd6. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6L2438403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c347abdc136b70d04931e1760d529b52b676a1ceb1ca235cfa99229d053d2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6K2414965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814b4931d68f24e5cf7c75b5f19269cf38f6198734a6a889f70342a4d18ad32d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:48Z), 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/QZK6K2414395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e8f10eb0c9dc4a76866d347362de583afaa5e15b2d5f521244c3fbf4cb65e1. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6K2414954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32efaef53798f24a255436328cbf6dfd133a153c26aed4b79c4e3d2f129329b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZK6K2414952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b5eeae1ccf661beffc709fc0ffd437959b479d93a23e28709c3d3d5d21447a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6K2414964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ec15a46d96db989e964034ab6d9fda6dc1a386b7c4ee777985fe0af72ed66. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:36:21Z), 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/QZK6K2414993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee42c4b1a956f26190a38996adfbb0727796db0da946ae7df2921e24bbd7b3e8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:41:51Z), 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/QZK6L2438412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0075e74af9ada4d725b15a743847ac909657c3846e1baac09ef327272bf0d47. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6K2414957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c9ca3efd140d2ad70eea6aea098d9f1a5bc6c5b875c55cd2d6d8f41de20c5f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTBD2428242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5d7cc546f71825290f906e0a784abfd2852b0832e8308db584ab87329ef1b7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTBD2428269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09230baa9f9bdca883be0c0a4b97749f7bf4a865dfe233d1128e8eab426a9f8d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:19Z), 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/QZTBD2429764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d19345fd4f005989b0f7522835badda0e83c383ce41992d64ba17f4755fd71. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTBD2429766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796d039760a7dd2ff4d0eb22ab7b491222051e4433ebb8e9e9f0f030e6cad99. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTBD2428291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc272c7c6e7396b0bb3b312df1cf3525497a5c292322817799e179f24133ab1fc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFN2447567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e438351459051ed480f3a63c89013792cbc04760015af4e21f159e94fdf0c9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFN2447566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3beead9c022b4cc81dd44156b23d2c107a1177b6aea220910e43de80863e3b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:04:42Z), 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/QZWFN2446365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dbb9f3513658fdef2fd73bdd1d0f7b373ade4cef67f1c756bceea5b75707e9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFN2447553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fef3e7c3859e3aaab4d7164cbe27ef2284e86c2cb57f15cd69a79216bb77d7b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:25:00Z), 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/QZWFN2447571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf3d0bda87bfd05c82fdcb6f9793589bade8fb41631f7df9698aac5f828058c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:06Z), 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/QZWFN2447565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92397ab39f1a788b7f46d18c21566a10b60223bb69eb1e6fda381ca3cbd5e8af. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFN2447589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc931404201c129244b4aae73789a3cd0f40e1988d5c737b851fc6d6989322018. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFN2447588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927ca43140748ff6c741f722afefafff45cf9f709f33407b05ea15e443ea298f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFN2447555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46482f9fc5b0c2c5d94e97972535c3a7e9aeba3ce45a3cd677e0e03bc799901. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFN2447552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c0a64073118c16bd0e07154035bdaf84e81dbcb26d55a50ac768d34293231d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:05:28Z), 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/QZWFN2447587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b21b78bed60c2bf45b9ba488f07f03b3ccc31a1d67c969a6a6e65af82cb12. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFN2447564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d99e6a09f3a003acbafb1eb6731e2054fea275d616c65b450eaa1b97a9622. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFN2446366.