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 0x6ca77e70d1a7fb808b2c9757ba90dde24692d6e43cf3748fb53bd0ee3208f2e4. 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/57a0beec-9a40-45f9-a607-41b8d67af2c2.json and https://artists.proofprofile.net/proofs/artist/57a0beec-9a40-45f9-a607-41b8d67af2c2.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 0xe7da47eda28c614c2353f05cd2b0e3c167f842b11baf86d3d46e3f461d9f96a3. 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/QZTB72329864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bffe8102f23646d884752b501b7b9e61124c06ae38cbdcf9b2abd8df573162a. 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/QZK6F2391604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69624e07063208f79258d461152dc4ae0ab9dd3893e1e6babb06e52c93f201cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNC2305083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe55faf3bbcffac18599fa9163737e4cc3c1277b6b66f0889bfd5c060371b1. 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/QZDA82304663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506581387ecc34b7f9f1fc912858b5bacd6976cf624875bffa8984adfd7545be. 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/QZTB92276432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cf7962daf2875d0279c39b4eae25405f9dd488d0e2ddeb6abfd7a36b8c19f2. 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/QZTB92225004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b5257b890a8dfe9a470f961f8ae167bf119c39b68c2e97c9ba3ec6533681c1. 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/QZTAU2242460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a741c7042765bbbcbc6f5aa84b987dd1d26d3637d1a50e0fb65bd0bc997acbd. 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/QZNWX2236810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b5b728cdafe4ed8291d5d55ba1c8dc410be13f96eec1a63075c8595e4cf895. 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/QZNWQ2263097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6602e3d79cb4fd3f02075167d0c23fd13e808228407b8066b3e83e3a399832. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTAW2363677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2055c514f45f80e0cf06dc8f0353fa04d2169177167e58070a40f5f04926eed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN82387017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8383c97c38224e6c69450f41b4aee42ea10e077208f3e59a10b7e6ce321e8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZRP42239077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d88982a7a1ccba1e5be1923ce9bbb67b44d3335e0b45d74cc569562fe39d63. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ42430993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975ca06e7d1236f6df2ac105d910f39ae70b328e11c6ced28af1cfea239562cc. 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/QZK6N2432648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f91a1c6cf1a68d515fb8f8a39c6643da6d50dcaa69394b0b94f4d45ae31547e. 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/QZHNA2314306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e812db469f7f81e024781969d85b04151a9e739dc331c2e20cd4874110c972. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAW2444451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd79c4ff855a32d96c034a1792f0c7ab426cfbaa873f328a487e73e9e1ae2784. 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/NO2DY2400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beea2bdb0d4baf5fbefd5d1471eae40a6dea7b99a969f8e7fbbcd01a1d7a052. 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/QZK6N2471667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560426e01d2dfae627a9c38522dee5f4144257f6dc6313e201ef18dbd7b017fd. 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/QZK6Q2429307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e990fd84d7fea4345eae099d86319245e73a7138a2ae85edd7d2c69874d95. 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/QZFZ72433497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e45d39ebc13247def82a7775317974a94b3ba20022eb68f99595dbf524da8. 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/NO2DY2300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75a1bf474c022ed9f111fc2fb0aed23d989fce4745c911276fc4f0b16dda4c2. 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/NO2DY2300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd8f4e0a65ecf9cb7f19815b6106d89e0e689686aa5b8b7c55c1e9348efb505. 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/QZMEN2333593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32742931a65407fb733969eb85e6e55a9c9118d73d5e7f4f9f36c1e78e528c4. 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/QZHN32350532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242bfd1887a9c913f3c1f9b3d4c8603897956494550ad74eaa3430a2aaf648c5. 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/QZFZ62343075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005cd663cef05b94f7ada462d3c52933681a2dd444f6148ec9a771db79bb6411. 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/QZFZ32309164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b441543ebfbdf7123c27af67a1a7bbd735e12bd6c7edbe018b7ff99d3e47a. 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/QZTB52273561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24542931d9b28ca3f4e094f86f7e5bcd954556487ed20c54c7a66fd07997c52d. 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/QZTAZ2274992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed3ddcf493f64364c837c529a4c02f90ed26e70cc491424569e930afb1fc64a. 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/QZNWU2205134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa6cd66caffc496d0cae12b42a95326cdb1ecafe1e189afb909e90bb6c22243. 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/QZK6K2272866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231a82e932d8254fc6d8916c412cd6bc568c0b1987641368afbcb4e19913c4f1. 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/QZK6L2252826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf734c501ce41c6fcef1c804761544c61c613b88f536dfcc19430c41e2e64493. 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/QZK6M2211462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62875f673e85f7ff77d4a26e13e590093e3de8808f0e52f98d2e1625029b990c. 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/NO2DY2300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996a1ec028e166d119c11c656af842f0f3e36cfb11326b52a29400009fef5a71. 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/TCAID2471553.