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 0x16f1a8dd11ba23fdfceab0504fdf5cbf41070b83932371d19cc78af70fa2c276. 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/46de7db4-c0f8-4656-82f2-dd24703c739f.json and https://artists.proofprofile.net/proofs/artist/46de7db4-c0f8-4656-82f2-dd24703c739f.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 0x3996bec11afc8c4c67e1b7dcf4a9a5f1f26dc484112574c3f8fc6246e9c71baf. 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/TCABX1404344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1eacf93869d402c8a24f308a7b61b17dbdfc41c6e0126b968e7249713e327d. 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/TCABX1404361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe179c204388a8aca09994a62908c8b0cab7b580a55fbaa4b33a520a6e44a9c45. 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/TCACH1562879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed693010a75427b41e77c5b2f7405364ef96a8708efebe2cdd4dd8a1b735c90. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCACO1622061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347fced88d4b2efd6e6cf89cb7f28c00fdadb8fbaa5377aa2cad62d974a7b61. 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/TCACO1608587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7be812d21b7410940dbf71bd55a725fdbc7ddba6fc1eb0831a6aaf53422f783. 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/TCACO1622068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fddf9ce92c6527d800be2314a330649b679855df9502bcfc07aed2120cc67c8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:40Z), 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/TCACO1622070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadd3c33e4e61bd7b236803c24a282624a0d03b0b50684d26047e470b3f7799. 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/TCADI1710465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bcf8eb0b81348031f42990d59304943fa62a451e45b00f7c1f3d1e23c0cf2c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCADJ1723641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadd3c33e4e61bd7b236803c24a282624a0d03b0b50684d26047e470b3f7799. 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/TCADI1710465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec250306a2658e049a6026c333e3873ed46b5d00272e1adceee05f20bd038b05. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCADI1710468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297081d9bd965a7635cb4d3f0fc547e1aff33dd3d2dd47a54d9bf0f1c1502bae. 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/TCADR1863219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297081d9bd965a7635cb4d3f0fc547e1aff33dd3d2dd47a54d9bf0f1c1502bae. 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/TCADR1863219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a96c8ede935480ce5cfc44e173913851a22169218017ac8d9adc01f2d9969d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCADU1844727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eff55c52aa6d174a9e94c6ffdfa95c7eee06736a65e6ed5617715358c4d51d8. 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/TCAEM1980003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea0acbaa2531def08e278080803d0eda96c9248b6fdbccb4e7c897b5ad7471. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAEM1980013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00128ad5e62a06a141ea7ed63649f7b3c5d851d23bbc792afcf55f5d724e1c3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:42Z), 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/TCAEM1980015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62140299b35b95de3a5707ceb96fd2254aaa7958e867ce2a880bf013baf80ba3. 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/TCAEM1980021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c18776fab50a8a8c39e8bbc8ecb4291377b508e1d398a8593c530147091a10. 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/QM5LC2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98037d5617234ae243bed6f502ad81b8a99fc212204f494e8bd399b2e9344de5. 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/QM5LC2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b88a47785b635a83faf0ff8f1a8083595490b0a647b01d9994889c4294434. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM5LC2100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63d153cc28ffe567696554ce06dbb84600ab046379e2e74943e1dcf500f2894. 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/QM5LC2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259fbdcd05e832b72637a57312a3cb9891be7b18261073244605248a2c9c429. 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/QM5LC2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58eb3d0abc3a63d2f759c7ff33691a43c546eb5e85c87c50c17b1c15e7cb7ad. 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/QM5LC2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc349594c1320970aa16fa46fdd6a79e8ab6fbdebddacd1272f7f8dc649bf16ae. 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/QM5LC2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e43e8a4162fbbe9055c1969adafdb72751a7d4f1760a0c7f6ed6477a0540bfa. 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/QM5LC2200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c208b93444bb468b537b7df2bed942072e3cbdced1eea05ab50d87aac0cf6c5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QM5LC2200412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d09d9c1585e3b1fa6959e671d49d69944fcb9fcf52b4afbf7018fc7ce471cd. 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/QM5LC2200497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1086578a71bc714deb2305016d89168ccef460ece8e3d4a299f88c9f94936e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM5LC2300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b1517ba1000a06b36ae71e7cd9b7b100a45acc9a65845c7afd44197b9c85e0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:19Z), 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/QM5LC2400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7625f2d384b956cd2a8b8828e36dd14f38aed21872235fbbf4cd2213367e102d. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QM5LC2400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60d70081d0577dadd4f89299f836471cb0a860dc541c04607913aed1e9e770e. 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/QM5LC2400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98037d5617234ae243bed6f502ad81b8a99fc212204f494e8bd399b2e9344de5. 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/QM5LC2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc307c64e8c5837ec4fb55aee74be06805d9ce9a826f89ddc7d5d4bf5091f3f08. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM5LC2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064787f070423982b83eeb27a2efe7fee9430f58b38d2a3e716cd2a2fa5066a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM5LC2300060.
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