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 0xe74cae32ffd4d9e23e4da8da559100297532d2bfd6b199954758915336068875. 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/4150daed-0abe-44d4-8a78-1bd85ca17961.json and https://artists.proofprofile.net/proofs/artist/4150daed-0abe-44d4-8a78-1bd85ca17961.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 0x05cee7b7fb761a2acd97952569380e16c28646242086699f2ecffb2b253f96c1. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:05Z), 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/TCAIQ2440827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47acea477540a96527ed06d0d0fd10038dcbd0acb9a28e94da5d68156771a21f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIR2440838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784754819cde2b831e46699aa762c80196778dda2270e899c8d00ed1751fad60. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:12:23Z), 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/TCAIR2440865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef071dd7892610f65212a282f5c47a772b90c31b0c541715c6cb917d90a8687e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAIQ2440876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460cda0f58ab776a7d272bd24f7c86c9e9e05b36452b6d019b00612b89f1d457. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIR2440884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8df2af459e42e73afd7cf911446c508afa5fe8498c4e990681e1ae09e2efd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:51Z), 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/TCAIQ2440947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c8d0bcc83ada9e492bea675d625191e1c3d166c864675f0a8ef15b3e1f070. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAIQ2440435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab483680ef82c115146d40609f97ef0bf602fe689b35f3648baca200a2c9afe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIR2440477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8feb3a78fd30aed2efa1d3e000216d922829812ac969cad9edb700c98a4ab18. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:54:53Z), 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/TCAIT2440525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0067f09db20bbdf09c00e76ec304355ed222634d3a1abc625fa898be0c5f558a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:52Z), 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/TCAIS2438057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f0634c8dace7d2ab5af1fdbe081d7e0255d43f4189f40b92228a190075775. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAIS2438018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3cf22666f8513f8ba53bbe7c54b74fdbf63a2ffec33fae38a7b1077b7ff9a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIR2437980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf01c273632913694eb3c37c6113e3374db41b865149cac8b9f39b468ca35aa. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAIT2465592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f52dd9d9c6f1dedc252338bb73cf84df82a2488595f38a320bc40f309f304. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:58Z), 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/TCAIT2465662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57768e6820d5f072168eac61a3841c0a4f93b6b75b9cbdd77d589cd50ec6bd91. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIT2466097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f852a6a4a02c12d314cb51368da38cbe694732fc0ca2ee25486532f3d7ded04. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:37:12Z), 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/TCAIT2465868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d788216c375c128f28e53d28e1e5db2ba8c1d0e250fefd08af38263efc44b9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIS2466152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4de5c6376b8d0f8d9d0a424b1a7412814351df66e16e70d9af579ebe26a5cd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:26Z), 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/TCAIT2465957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697997a719455a424b934e1611f9b7179f9af1cbb64fe99de131d7072f7677c4. 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/TCAIT2466316.