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 0x263e752160143a6b1a579113a5d8903a21d1415a47a0ac78aeeaa97a1e4fe253. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d33cb7e-d17b-4dfa-accd-332ca2b2bcd5.json and https://artists.proofprofile.net/proofs/artist/9d33cb7e-d17b-4dfa-accd-332ca2b2bcd5.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 0xc8c927668c8f2fb3953d66d0644efcffc3186619db82c48b8d63c74b01cd3d29. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP42176184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43ef55b714e17bac0f491490f8f6e25fca136f5a6c59aa6f03e78f9c087ec5b. 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/QZNWR2207898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b51221397b708e25bc15e72edefd7f02f94adbdba7bc2842a9f5dcfb8ee038. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZNWR2207900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c5a8b0dc96b659c3e95628e20c5036497a9a3041cd83bfe9d0f0c43f5a448b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWR2207901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384b9ee9df686ac3a266f2078bf0ef02d1bd260d25b4f51c66308ba923bf40b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWR2207904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708e04d0cc2ad746dc6baac3894d683bb04663d2080acde4b3d3196f759eb7f6. 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/QZNWR2207905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959525708214273eded9011e7a9a91d1f9e9c9b1720743731c39d8b764bd6348. 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/QZMEQ2170581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775906b342410e32a3ed39048e194bf18891841527a86d04a9f5d58f0b77a273. 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/QZMEQ2170583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4a22cec045e6565dad8a7e877c806463ea22108accbe59fd75a495c4de123. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2128611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1ba49c3d6b489a336d804699bee944f4e9163042c7d753c6c5abfee5f3df9. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QZHNC2128613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4d6a3c1dd1b6a2dfbb7394cd02a376ce1282c0bacbfd91e5945b18906f42e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2128614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58d9a8cf2c83c3d717a3d4b948591877ee6736fadfaae15ae9d0a53e0a6900. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNC2128617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921a6c7462d91cefa59195e79728ba575da54a4582dda3d3ae08890025c50e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNC2128618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90140de9c43e6d5d0243af0e599c97f47ad822eaa4f5dfd14ffc20c76d5328c5. 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/QZES92151631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e87d180d5e083f485fa37aad753f40cbc3177a8ff0ed41cf49347ffca8578b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNC2128620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53748f940e55452d50c399198f02a203477150c26134031636a736fc6518245b. 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/QZHNC2128621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8c82927062adac78a819808b93d5257441fd9c6661b242f45632db60651ae0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6DC2099519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d0c72907a3136e23ffe242fe2752af60c5245d7088df194d4a55ac78b988be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6DC2099520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a353ce51f5045097550572045a29c8e2c8937d810d90332a26e846b7bbfc83. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6DC2099521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606290ce582997fc3b58e602cf501a4c7f05e0beac26867d4e70f1ebc26ff21c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6DC2099522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0b4d55f4cff89b75d10a144607ec5affe1bb0ef9748db1310fa64c93f9269. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6DC2099523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab00cff4484090fe53fb269e950020485160e48a8926f6e25143089f204ca9a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6DC2099524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795fdefdf51ae7ecb59c8b6dea1403b1353f6e744dc6311b02fd71d9b6da2cb4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6DC2099525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ceb37e53a3a446394fceb60302a0a24bbc51738c752bf1efcd4eb443778b9f. 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/QM6DC2099526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419acbbcf6a842cbbbb84fedc130c26ec4a74843243a7675b50ac6b8cc358f6d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN32202386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c927668c8f2fb3953d66d0644efcffc3186619db82c48b8d63c74b01cd3d29. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42176184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a684c376a4c50f77a732cd103846e2447698b82df9175e814306db40641e6e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA2P2110558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90140de9c43e6d5d0243af0e599c97f47ad822eaa4f5dfd14ffc20c76d5328c5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES92151631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaed28638c36f6cb1ec5a2d256179cb0d9bc327f558dc0214955c4e3fe76637. 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/QZNFJ2101647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd9f8b2db81881cfe67aa4dfa2d9d44325f85c4f5cf948d120185fcef9f53b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMER2019736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ee92e0d8efa2d09384731aab14a36abc8aa6d5eec29f4f2a2b9a1ab759a7fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6F2014175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb2dd86f933b7a7e1edf32285a3b99bdb9e192ae869b36aefda3ce9662c8bbd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6J2092641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed51c3e4adaed0103ba6ed4279afbdf8516b988d4e1eeb1555926402385802f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ52025077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf248ed316e927825f6e88153693e95ad9d653c76999e8909683ed6fca101ce63. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2003529.