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 0xe44206bfa13074d4bb6ba9c26dff015dc958821eb675697c58e7e7cf68569b98. 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/2bf51637-dda3-4b66-a86b-317320fd0639.json and https://artists.proofprofile.net/proofs/artist/2bf51637-dda3-4b66-a86b-317320fd0639.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 0xa02533f53d5109e8428c71d3f9f9b4c97b5ec8ef839dc574377f3d75150c32fc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN72336577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53207ce289f31459a46553388da0a16a645460e5e9037dad9da1320f5dfa1a8f. 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/QZHN72342264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a137aaea0a7a751c08008318bf0c303e9a231debfaf11850e6020c0ee766c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:38Z), 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/QZHN72340790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3df8f3f73fd947e97949b76bf568082e3561ee20f100e9c2c2312ddf4d2460. 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/QZTB72305328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef42ce5d90d5fa30a6431c118a641c26b2686412c6865e78fc8749eed8c5871. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTB62334800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489887eb8d3cb0ac3384f9d12e096a952fdba716fceeacd51ef88d52d91eed6a. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZTB62369680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ed2d5502260751570051997784aecd293419fb20956b90d27c3aa0c86cd6e8. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZDA72463523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8ee78d0845d248fa393c82ce68ebaa994be209e76eb6b4189b9f291d84b234. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTB62369683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00589213d207e595976ea64ce3c4833c3978341262ef56c4aadd403c44e56da0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA72463526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac298218b4105814caf94e96b0ffdac4a311674533fc6929912fad3c63ca019e. 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/QZTB62369684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef06a2214227a8151bcdf0ede505e4db71b893abaa94fd8322b0dec6de7568. 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/QZK6L2421646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d427f5ea68dd9efc0d5220fa5e6d53978cdbc94c8c99fd7aaf77cb67dce55. 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/QZK6L2421647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cfcaa3057864916c6a697caad1122784c87fee234c4999b39b7b19fd6e8056. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:15:56Z), 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/QZK6L2421648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb9167be68d7f38c4ac76ff9f52b3c44052e6add052c4efdae0fb481f9ace57. 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/QZK6L2421649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0796211c62384d21be9f6537c64a017cb9a66536ac9382f78e9186675d04d9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:53:59Z), 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/QZTB42401889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ecac248d75a65f04d4d0f6d789f46c9ee9e195118942f10bbc8a9028a2f12b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFR2408525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a642402ef18c15b7c6d40cea491ac1ce1e1d08523354ad98ae5a9b3e3c046. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7L2486556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f85090bc83d2aba3cdbf78773b54b31046d890696300b04a41bed0f8f4f16. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7L2486563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cad62a96278482a9f7515b3eb8d003fcd1a1c18392bddcc3af3b5c4965020b. 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/QZZ7L2486558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a642402ef18c15b7c6d40cea491ac1ce1e1d08523354ad98ae5a9b3e3c046. 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/QZZ7L2486556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b57c87aa23be4ff2917c81986c96a0f8ce0a2a179606df9bb8605850641dae. 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/QZZ7L2486557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f85090bc83d2aba3cdbf78773b54b31046d890696300b04a41bed0f8f4f16. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZZ7L2486563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cad62a96278482a9f7515b3eb8d003fcd1a1c18392bddcc3af3b5c4965020b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7L2486558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a642402ef18c15b7c6d40cea491ac1ce1e1d08523354ad98ae5a9b3e3c046. 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/QZZ7L2486556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d463d67302e9ac974b62d6acf0998334149cf727e33b74865b319253c4549. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZZ7L2486564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3949494a22a7144ae43cd9348a32656a3a6b07717c6e78cfa1d23296f9485bca. 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/QZNWW2521730.