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 0x6a22b004b21e5d92484006660e7fc5ab8c22b036c8e7e3282001031e5b9a49d3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e83dc895-755c-4482-b98d-be47af9afeb6.json and https://artists.proofprofile.net/proofs/artist/e83dc895-755c-4482-b98d-be47af9afeb6.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 0xd8839b0be35f374b7cb600c13a839fe416c96dce671293920359f2792016b99a. 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/QZES72529076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b3eb2b57dfb52a382a27f637761cfafdc77fd5be37fec0b37de0045124af39. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:43:24Z), 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/QZES72539785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ea184cf39b3912753cce7446c998925192be8c6c095cf6e362cff523a276c9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES82524697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611bbf7c10ce1f2de04859cfe71f844478d56f3eb94a49851ef0c6e2f4d99e74. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES72537545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13abdbf8e1b65d5fa89100b5c6087b570a60ef6577eb0a4538fd946c89e9d36. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZHN42508456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aac472491c7835412fdebcfa132b0142c582da5d22c1b602311f53bcd1c2fe7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN82537776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75eb8533874791d635cee6fadf3b51061fc8aebba644113f7b5d41e3297b204. 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/QZHN72520697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bda3b544fd6795511f97ae2a07f762d6d246fe17d21b126728aff8183bfa94. 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/QZHNA2507276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72cc68286e9b78c559d95c5897a3450964359f0af78f93be25afba037de1def. 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/QZK6P2538550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef7f257f86b4cfeb6120745c3308776c11c3e557df494b23ec8535700bc8ba5. 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/QZK6N2527234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ae32d77374943e88e2b2a8b5442beded979f887e0eca65f4c26df676bad093. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:10Z), 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/QZK6K2543141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216bccf33e77032230b714d83e62da74b3c6d38a952eb03c8c59f7385cf2a0e6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:10Z), 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/QZK6J2594651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570fd83949df163c217905688d122aab279ef7b8ea0248c0990c43a48d30b63d. 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/QZNWX2534656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c183420c25fcf306835941f33776b33144ee5fd709cc453c1dc7543bb8f6a6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB22557003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e01aedf0256bf79fe29ab517911efbc2365ee58f0654982a3cd08b496b65cc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBA2576220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7260c21e6b64e10102017685777611108a8bfffdf785dc206605b14a651cb1e1. 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/QZWFP2573558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c7e34a3baa471ad98b7fc3bfcb13b7b8f78fb1127562db901b0ef9cad213c5. 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/QT3F72552047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2711bf841cdd9b28f9bbaf674fc8b4fee11463aa4ffcc09fc2a8dfff191e633c. 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/QT6ED2571471.