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 0x31c53ed7976eb32c1ae273428c0bbcd10e33c3ff1897829423734641a3fb464a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eeb7534-32f4-4fef-8b55-eebc8a17b3d3.json and https://artists.proofprofile.net/proofs/artist/9eeb7534-32f4-4fef-8b55-eebc8a17b3d3.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 0xf3aaf78007d34d68ec20731db13e13ee5be9b6d44bae1a519c9164e8fb3d210a. 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/INH102306939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba50cf5c410173f65607eaf156bb37782d487709bcf41f4ce9b9818e9da18f5a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INH102310403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af3cb008be18a6560cd3ee21d6075b75b2038588164f391ef4ff828fd954612. 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/INH102310401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3162c0d05b685869826e4264d0426e93c4af25216a0de150c90b6672161d4f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INH102310488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded075bd5f375f7955453a8882353119d436c29204157ddec273e9d148f9b1a0. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:06:39Z), 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/INH102310573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f049e3b0136a4717b1ffb71d489442625a589d5a04987911724a88a16b4c03. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/INH102310556.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fada4d041b11e695da017a635c2fe86abf6364a622984c9316d4bbeaefaa8a3. 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/INH102312212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31b90a8446d6d353537a36d5f03cd402d2c3c5419b1accf57a0ef13ba26c0b4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/INH102312206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a31cf3c5ec8d982da7c825c97d31dd761659f7cfcb5f5ccd7f94527c0eac1a. 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/INH102312242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ae7a2bc9b3a47d06443b8f2f5465246e5e151e3986fbc4b845c3c92976971. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/INH102312484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b578a75e2abb1dff5e88ea2e22fe6afc8254fa671b8408e4949587404835b0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/INH102312675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa516f8153ff29195e8e664cacd9b45eae8fadd8959a5c89290d4cce1ae69211. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INH102312517.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc724eceaa972d636330e56f4115df52dfdd9a27eb5b9b349095664a3e54f01d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:05Z), 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/INH102313981.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76986b32643f97a15fee025f734d12161a644a4f491ac9e18261972be1078f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:03Z), 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/INH102313987.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b6574777453ff59d5e890e0e38deacae0d4f5fd0fab7c9878ff9c270236344. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:24:00Z), 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/INH102314437.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac32997d70649d10b1f0aa45872ff4958cce6b60208560ea853d696d6df3a135. 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/INH102408201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed1f5a41e4bb09fff13bf702e8566fff336fd9d1e0cad3097213e38b3245843. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/INH102408662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa999845e37468d254f436524d23b854a9f168abe7d613f7bb4416d4d300e7e83. 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/INH102409171.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd384b44602b6779a531e6da5db94c6e978ed21563e2816617c308b3985377727. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INH102409598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e72f36c17e8babbc74a13db05bc6ced7f543811a8f7e5f5129d07e3c2e07fb1. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/INH102411402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c46a07fa4694b13a1f4e86536a6570cbd06d61a3b609787d45bdd2df47980f9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:51Z), 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/INH102409582.