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 0xe8310d68ed84d6e3bbe6f7420406a6e09c4e4a282031effdcd69229159910f1d. 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/adcdb1e5-ab17-4ffe-b0cc-7c54fe5820a3.json and https://artists.proofprofile.net/proofs/artist/adcdb1e5-ab17-4ffe-b0cc-7c54fe5820a3.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 0xf5a98e5927f627b4c4e63f15f22f6ccd63f01e1445200ea35014864d45069a1d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:49:19Z), 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/FR96X2098112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe1e62f61d0f028fa0aa3f2b7c756c199f88c59293bfabc0327dda83e43dfe7. 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/FR96X2098113.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434c47b8a401815d9792f1fe19287816d9af0b3a94543a2d89982d7f685b8b0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR96X2098115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd828e18a8b105b7c46dd3bfebbcf236cfadc11e32781843edd545400e720229b. 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/FR96X2098117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f21879523ef13d8a8c4cad8f1b5b38d401b86dcfe56c174bcff86d5c866ef1. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:21Z), 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/FRX202058676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0b44b8929524c6a23929d241aa2cd547794ffb80ec1981d5b04aa9beaf0922. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX202058677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47006eaecdd7b9cb5e63e21796bc0cccbc3b0a72c888c365eecb437f1e2e9c. 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/FRX202058679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64bfaed94056c8bdbf36e36f2cd7bf4f82a540e5552980a7cc6fb91adeb3ea. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:37Z), 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/FRX202058683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75546bcf608aedd866f2017d906f1ab58f04b3bcba4dc6a24bc2938826f0c97a. 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/FR59R2196160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10872f0c9f879176f286b809a0fae86dab8187973922a2e11fd8af0298c11896. 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/FR59R2196161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da1d07ee4e4ddf0835a51bf2d85ac160eb20eb00a5f17b9f88a2f8f41e3f88f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR59R2196167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c0c65dc2054aa256e7e4cf577cd9b67a9a393517e38122c115a30ec4d8f49d. 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/FRX762172515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8a545c75416eeb05c55b41497180126a0c8d9e24e0c39fdb61f9edffe23e2. 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/FRX762172517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5276309cf74ec8b266da5379a0ebefa72bc90c7e31b9fcc9e5b447c24e3a281d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX762172520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67466c13701f53e53c36fe7061d09025f9e42ba8076a6ce0a1deea7a88b7ebca. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:26:52Z), 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/FRX762172522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe371f0daf648c7eff89f1902e110a1d33ce32014708284802af07e9524dd8e40. 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/FR59R2252700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0830587614d9dfc6070c5f454cc4ecaded999fd767a217bc56c612ca8aba5b. 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/FR59R2252702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570e16da8dd91b610dc0500c9a87c528a1b4c3f3a856d064df1b2ba960cb9e37. 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/FR59R2252703.