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 0xf032a38f2d7c03d851175074d283c1d5d3cacf31abf99acb4185ebad5a7bd574. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ccaa460-d1f5-4390-b9eb-d90bc78849a2.json and https://artists.proofprofile.net/proofs/artist/3ccaa460-d1f5-4390-b9eb-d90bc78849a2.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 0x2c083f7df71afc13515e8bc44fcfe3c912500851ab7a574351178d39ad301a4f. 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/AEA3A2044810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b613388ea8d4908df8519290ffb327fc8d3b6dead526b5487f04aa0193d5f1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AEA3A2098278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749608a899351c7fe3af63c73a3738f3a6893842b50840668ae78934f7cf31ce. 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/AEA3A2003311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaf9594122296732783fb0a4d6cc709b7b4451b18e57f79412d1c2e38e2f1c0. 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/AEA3A2063036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8cd87983ab86a5b318cbf82ea5dca24e440c41c231a24179029e6afff217a3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/AEA3A2053318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85df76beaf135cee4a9b7577a68105c6df1bdf68e95ac06e9712f9db546ba745. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA3A2020529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c61952b15ae3295ca90ad124dde18502488c0c22881ec76186a4996636267. 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/AEA3A2018981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3831d82cad8b067c659abe100421916363042e56e8368f75ab72a993b45c3ea5. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/AEA3A2084751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c962df2bf316858d4fde2c21cbb173327ab1fa54059ebf89f4bbd3afd8f85ce. 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/AEA3A2038552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fde5ffac22ccfe0b56fbf3356bc5ec6cbebc7186136706217e2ba6a9e9a28e8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AEA3A2061144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aa86a09fd206fbabd654ee03d0ef45a79391c391328ab11caa9c0c42f792d5. 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/AEA3A2000880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec8d70418e28042b78cf8ebc82e6967e4544d02a6d357d53dc288245d53a82a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:20Z), 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/AEA3A2068740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7495224408aa2fcb61a51bc720eb6ed009e98f0c3f180f393aff00ca6a1ae296. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:25Z), 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/AEA3A2071835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f5e24fe1ba35a657e995532f53e0abdb073884f95f57829aadcebdded51d6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:25Z), 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/AEA3A2049316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43658aa2912fe7ec3de118b4789fc9fa332b0167ceef615369dbfa3eab244c3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/AEA3A2011299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83d1d6a0c51c70a5c2628986e0559c8834308a371f12e332d752c7b236786e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/AEA3A2044293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350b448871a40a115da2278c7f6996edfa0b3063e09744b801fb93262eb27b61. 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/AEA3A2060781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15616c23e85d1aaa1fa2ba22474c3b8fd616b963b45856c38dbbee77deda91dc. 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/AEA3A2026586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca47950bb838895b83bcf802e6a722cdb175b35117d5ac9502cddb504667e32. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:51Z), 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/AEA3A2024155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc11469875f192a13f7ac485b95b5005b256d4926cd319c90d9e2fa079dbf9e. 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/AEA3A2099113.