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 0xeb41cd840dcfe05dabcc1513b0f95329adaec224df48bc676f556c1c710e49b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/181d565c-81bb-49b0-8847-9ddb3e8df83b.json and https://artists.proofprofile.net/proofs/artist/181d565c-81bb-49b0-8847-9ddb3e8df83b.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 0x5461c7cfaf3731e99402b118d2aaa252adcc3cf691b8c16536e2594c02517775. 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/KRZ291615222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03dbbeb382afa20fd29b94bab7e5aa264d0a7f75797cdc0b123c1b1a48db9b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRA341785247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46321cd0fa3cab0d7db28ecdbbf55ab00b6f808443aea8c2c22335002e18f74. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRA341787522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc28e63ad6e9022d546733513dbe26104c545ddf13b21b7b3b8833723d04370. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/KRA341787524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899457998d39e348406fb5a308e0bd9c75db768f5d434b791cdcd0a8d57af30c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:55Z), 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/KRA341787525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcb2115adad2e6b86c09c3693e847c1e7d6d0ebd0820e20614b582305400cd0. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/KRA341787527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40bb330e5da6a26e86a5fcaf5fcb5d07a66b7845fefa51db44b2218461ab01d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRZ291801994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4c6ff4f86ac5f20ca105dd82baeb15875fdade8c25762c92518f665d0b080. 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/KRZ291911233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e0cf544ae5f01e16ab8711ef1c306e41b545171fb26d0a52b9611d25897f2e. 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/KRZ291930680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9104fbb2ba369a5c3394789486e154a7b7e1631d1b72bf89ade9eeb1b7ca9f6. 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/KRZ291930681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227520f883e986563817422081bc305437109722b99f5346c3933c218d98a74b. 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/KRZ291930683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3395f38bd2a4f653607808340b763173cec3a9f6adb0cee56e500b23e6791d55. 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/KRZ291934699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3d3ee53fb47f6773f8daa2e5ae323465c409c14ca075618fe6c22335a92067. 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/KRZ291936507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114067dc938be44ceeeac231c90bc7f2ad9a793553220a00838275bf9b2c8355. 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/KRZ292078470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca272fdced27c6edd323a15a55d32a071bf1affd4eb2e8468ec6bac841168d6. 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/KRZ292078471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2e29b889b784abd4d1b30a50200ff6d705698dbd4aa6ab6741fb47af6c3a0e. 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/KRZ292078472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec02d2a6044c735b59820ce13dee9a79bbf43b9ff7f545c13f7d2e1f5600c231. 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/KRZ292078473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34b7a5ec2d79198e6413ac0f63e0ade423b33cc6c640160194f75ecb1c5523c. 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/KRZ292082091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaf50698a34ea94dd022e1b22d82d85253450350d7c196c2fb8e84cd949010e. 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/KRMIM2028655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2b0e502c9563209a60280bff52d07354d3325f644a861d4f2872ab905f2c5f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KSA012136053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ab87bb049397f06697782afcb1a8011b168ef86b5a431b0ccf139fef201ff. 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/KSA012136056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9248732597c62933ea806732f693ef225ac075cefaf96b0d0cd0ae1dc68c0a8a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KSA012232986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971ad59a76a315109e3e4e9ad0332c62259cf53301717bc761800791da269d0d. 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/KSA012310265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaebe3a0b0d5ed2d8390842ed743141f7effdfb58ac9a5d0d3c7a27263c1d5a6. 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/KSA012375325.
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