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 0x4e82de284ffff9eb1c0b61a849784dc6e0c52725ebf6cbce12353148acdd98ee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2f95b86-d241-4e1b-8651-133058f7acfc.json and https://artists.proofprofile.net/proofs/artist/c2f95b86-d241-4e1b-8651-133058f7acfc.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 0x6e1a146f27aa69618476dd3f92865dfe0670f23f3790c85e4bfefdc7e0d4ce1e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCABO1316772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cc8ef64e68a660ccd4f87b723c923df9d50350cdb5fe38df1a54fa8831cbbd. 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/TCABP1385921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bd93373e3a00ecfbca30823868725e9d0a1660005c249fe0bdc01f306af256. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:53Z), 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/TCABS1330958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7de3be338a196e4faf43be750c0af4aa6d6f7c74519e4e20523fd9fa69ab99a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCACC1461039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84eb2abe410a676a7d4e12e197121161d37a6248e5429394833492692057629. 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/TCACC1461044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2908f1925d22355e5d299e42d3341807f982bd63234be3e2edbec1e19ed055f. 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/TCACC1461064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c398868f76213bef1e229aa17b00fe0ab6752db1675e957a465d7e3e0393f. 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/TCACL1686069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b11c99fd3a79df7611ae83e7a3ede8062d39e6ad7ecfeea5f22bfef561b5ac. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:44Z), 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/TCACL1686071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb112da4305cc21147ffff3576c5eca1556e5b7ca75f8d0f87a174374609f2fdc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:36Z), 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/TCACL1686085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7023feb31f8a3e3773e617f27b2a7fbd9b50c884870ac28406fe0d6652fa322b. 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/TCACL1686086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47db2059ba2bf41feb3cee2e113cf28c3eb9b76ad2284d015e4b44bc24236d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCACL1686088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd842a6f22f9173ec4ac6e4e62097fb9e4f0b64f077e34030232944107274d07b. 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/TCACR1645069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72161b5966d0b81e21075318fd546a1fa04fd888ddbd2d09c598323bcccf95f8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACZ1715794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee5355a0570058db1be10572c6346092d6b49c54ffb9ee111b07c78e4181141. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:30Z), 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/TCACZ1715798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fffa77aefa3a0fb9d854337355e6fe610ccda67d034720ec9cb1b6aa5804652. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCACZ1715800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2427c9f44f6545a5634cb0136f5abc92dfdb1c19baf43fbe87f73e9aeefde9ac. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:27:52Z), 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/TCACZ1715815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe408b748c7f8dbeb58446a5fe23f59376574b149d25177eb6f9216d74d87592a. 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/TCADF1771252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b661521851fc52b5681926c8d5a7467a6a2010323ac92ecaa85d1642af0aa8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/TCADF1771261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a541b8fa81773cc263661df888698f8fa3ceb89705fb0a74b69a730226d6989. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:25:50Z), 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/TCADF1771264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa482940456bab29b8aaa6ffcd70f12745de54bddf7f03295992f2b69495a63. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:24Z), 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/TCADF1771275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c519f8161267aa287dde8e58200d1f586ed362d899a252232aba84d9e576c87. 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/TCADF1771283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce2cf94f25a641c36cd4b2322d8bb98d353047b230a4ffda9fb6bba2ab1f56. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCADJ1707756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56f9c1f03aff48247f912db9001a2bcd27737c5e8e57b6fbbe84db087cbd628. 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/TCADJ1707759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c1671f15264cb2bcd8cc83b52fa855e87ec7cf1b2a860d2b08d4260084a498. 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/TCADJ1707761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0da336c6c8c9b3e90b1474cede810873019be6d8afdd9a57d0f171ea8f2e0bb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCADJ1707762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dd2fb6940bf70b1097affb553d0678f7c770bb47ca361139bdf5ee6d7e1802. 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/TCADJ1707763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b56e4564fb09a2355503130ba5d511d5d28bf812431bb34b031acb3bc91914. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCADJ1707767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cae69edc045e9801b0fecfa9ae416c81d1a911feb8e52cb5fd28383b85b506. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCADJ1707769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f931a4282f6c879a29dc6e6db0ad27e37aff4f0e04052783d6f498cfbd57d35. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZK6L2350922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ceec0ff40bde4a04fe9beb91baa7e6e5e6f13b6f9af850006867f4b2c800b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:15Z), 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/QZK6L2350929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3ca938e7a1989a45c61f7c175aacaeebc5b1c57d200472c8cdcb60ea037da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6L2350919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196443a86fb1c18f3932b9ef1d2d97725f2a79470e3e34834c24917d95774ee. 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/QZK6L2350925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ee8d1b572ee08f749ae4a0cd800da2de7a3d814bef820524077920d54475a0. 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/QZK6L2350928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee30b276e8d4d7f0d97b2cc5a89c69666941c1f7c676dba28df0bd40d982c75. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZMEN2415770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb92aa310930dcfeb6a4343f095892ad35f7434cbc095cef8b8ceb88321bc1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWR2432511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259de44905fc3752c9be00d5820b2cb1cba2e8ef7b068ce8075fbed7aa61df18. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWZ2424873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb87139d9349abbace295e87f44cdba671b62c1e0973bb83046e3b1b5f25d3. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:55Z), 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/QZNWZ2424885.