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 0x5b0388337cecbd8bf2131eaa095473817df7b4e2192c85f37bfe59a70c330705. 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/a7b09376-b26c-4b3b-92ee-885c93b9a0bf.json and https://artists.proofprofile.net/proofs/artist/a7b09376-b26c-4b3b-92ee-885c93b9a0bf.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 0x5b1d25bcf3493d36f2a40fea14719b8d0b2bca2d1468b2639ce5ea0e553022b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UADZ32094006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bee8326bfe8c242ae6077b763d50b89e7ad5c0343f7f012682c4cd1412048c4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UADZ32094008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc745c64eed197616c147f2727741210689420c51082ae46c2eac963713031502. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:41Z), 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/UADZ32094010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f14de0a440ee6bbe67c8150a212fb623e19489332183b8b88fa6028b3ee11. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/RUA1D1809924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb2fbbb379bedaa0b862aeb0f1cac7adcf1ed4d7896c65286ffb0566461c1dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:27Z), 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/RUA1D1930567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f44d2877ee7d5785a4d16724caa25b6011f58740ffde4a4911161d83d602d1c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D1930561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0b689a73d65ebe0cb5ed864ba87422936ea1acf9909837327e6fe6ad2d6d8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D1930562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a76921897e29ceee6bedcbe989980f3f19ff148d944e28289f3faf00f17d5a. 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/RUA1D2009037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ac91326090bd8a3eb1d18074feded2275e3ac578add3e42a279306936a324. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/UADZ32094011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85af5932382c3169b8f5ba8993a8876dbb6a8b04349c42522a6f971be680745. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:38Z), 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/UADZ32194004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f385ee0843ea544a90c116610c64a25f2b5a0e0563aa38c55e0a0c31581c417. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UADZ32194005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ec3cd9214aa4adf725c61949dae4413a693d49bc072ac182b4d0b3fa74e05f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UADZ32194007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18da9ff0cb7d48491fcc0b55deeb7fb42495a956a820848f893e7dfbc02e44c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UADZ32194008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd438f15c2b32d8820aa434e993aa9b3277c804325f3c469fdc90844785e42. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX762193295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91592b2898b2fccc846ec47cb32b4836124837d1432a78d03532ef8d6adbf694. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:55:26Z), 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/UADZ32294001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf276f7531af31947cb819b5f9779d888d9749fc81222f64fed894abcfc065a. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/UADZ32294005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422d0a32a870f19b4d34b6eb14fda23ca84ceb66a4ee17a432113db52304923. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UADZ32294006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d382734891581736fb89bacb8413e5374f66c23c0a0f176fb5c29c21587c113. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UAMB12303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c14478a1506fccf2b8d102a30e25a76275e7a58269204170c056c9df3d32bfb. 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/UAMB12303003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841c73e9064344cb94893b75f86a64be3efb97a2788f46aa8fa973b4084180d7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UAMB12303005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46bfaf1ce41509cae158e88434581306f4ff2d2176501cd73a437717c3de80. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UAMB12303008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3007dd5f7ddc99cc418d694ed7b4ac3960f0d5d33d7f3a797d5053e8bea7347. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/UAMB12303012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de589db2054a1787bf1a24383daa86f3fae0b885afc3294032ae12649b02fef. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/UAMB12303013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9f4d53a5f11da45e080b02b691e77996f006786e127158544a95d51197a7c. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:33:03Z), 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/UAMB12303016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f54a237658a19ee9d8cd9fe72b619f9189d63d12e71ad5287be58cfbf765d6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UAMB12303017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ebd95abd1045baca02b090dba709d9cc82a75305f3d337cd3425979f1fbfb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UAMB12403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ac0f71b093f2238032c5abcb80c6ab230589a868500b31b056d531b664f0af. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:37Z), 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/UAMB12403002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2701187c004adead34b10125fd1698670c941fe087cf6dec8fc34b93897b1. 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/UAMB12403003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a0767932615e9619a395650ae963ca8fd35d93a81978ca3582fa70822ed7b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UAMB12403004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d812bb8aa7b79d5c05c2795be1c6de29a394f5667155ee88b791d563e0e6847. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/UAMB12403005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d41c27062d5249718d5de8e65fdd14ac2e159576dc372d465fa8d6d73e096. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UAMB12403007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c506504584a2366c294e1bdd0a36563d34d58b94eca9dcf9e1fd48f13af66c. 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/UAMB12503004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b183dbdfa231d99c7ffef07b2bf33c3843ac7233f162438de125fcfea3f3ad. 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/UAMB12503005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a0767932615e9619a395650ae963ca8fd35d93a81978ca3582fa70822ed7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UAMB12403004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbeeec7681682830187ae99e97f403e5f466ed82b9a4ee7cb8458a014ec969b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UAMB12503006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65868da423a2795ee879c3829224166645baf668c3ac53796016091e4d31e52d. 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/UAMB12503007.