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 0xa6a1ab78e54b3ed9c63f2e26b84e6fa981e06796679172797c67c4362e341db1. 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/ecdb54a3-5a3b-4ef4-91c6-28bc597997e4.json and https://artists.proofprofile.net/proofs/artist/ecdb54a3-5a3b-4ef4-91c6-28bc597997e4.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 0x39c53ec46e2396bd634ec91d3bb1181a80bc3d9087b5599a09780bc7b9335409. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:41Z), 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/QZES61966754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742c7f70ac11ab5254a3bbfa6becc1f5a37085161fc953b254e547004ba137b1. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:18:02Z), 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/SEYOK1522716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22fb7886b3be9dc750e742a8d0d49d40cbb6530601a34470bd48b0f7c0c384d. 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/SEYOK1522719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ece1fb78934abe7400489740d581c7d9f59329a4997015f08e6d16a959cdbf. 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/SEYOK1522720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263de0b81c1dd064378fe55258317bed0cb158dc932681556e2d62933dd3502. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:11:08Z), 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/SEYOK1522722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c554da836e740af8b32c3f8e5745488a57c62fd2c3b0c763fd988b240e294d6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK1522724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ff013a2b741dba6038ad3307839fef08d9bbfecddea7e7d4f24349bca8ab73. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SEYOK1522725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f7b1963d2cfc7f1b980b290d826f5890e506254858e98a22081341bd977f1b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:29Z), 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/SEYOK1522726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342eab840f6f53f6cce96f642355a49fd384353beb5e40bde37aa6b25ee93864. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:31Z), 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/SEYOK1522729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aea9a0883b01ff67b826dd0299af0a12f366304a33c2fa4a20d5b0959b8faf. 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/QZK6K2084424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f832f0dc141988d590a18239a988ae9900404816f6d69cc0e7359d4e47cebb0. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZES62556082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d848e8d4ddc4993ffb1c9768618e45ac013fff6b6b2c67968a700c05ef00993. 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/QZK6Q2568350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef59dfec3fb4c7bb32e2cfa1f38737a8bac4d64b8f3d7250d9393d201b2f446. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZK6Q2568351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee0f044b74c45328b119fd7f62dfa408f0d7f18d93f6ab4d557616cda8d162e. 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/QZK6L2521607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d81aeea72b5d2c63a3207e707c215458efea744a9c8eee85a9dffdf716875a. 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/QZK6L2521608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d94367662d0766c575bf7a4db6744697b1ce2cf6bc9403cafcaba10e57deaef. 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/QZK6J2504140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb9caef6126e5b69caaa85cbf5df7178e2c286ec0891b782edbbab4b6c96b5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZRP52516725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced26584f367cd8d0359000f78629b8754ec50f765b9ccb525b5b78dc5c9faf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:38Z), 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/QZTB52570976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724646fcc34b2a245631f35c7a895f181f7a39138eb66efe16b785c632d7e33a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8UU2000040.