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 0x4a3e0e83665461cc96e007511b7d79ba4d81f3a7be3791c8678c462dada104b3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf33c901-8e2f-458a-84ad-4032cf343323.json and https://artists.proofprofile.net/proofs/artist/cf33c901-8e2f-458a-84ad-4032cf343323.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 0x0f42afed2698c8935c9a07c88fddb8afde906bea8cd6e6aec89f1112ce2516d8. 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/JPB602169029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7894181ff56e01acf32a8430185db7a8d6f8e856f27856685c029bd869446f. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:55:01Z), 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/JPB602169031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434135bb76287903fb2fd11ad4b4b990903c932e99e9f9c02d8e5ef86b3b7ff5. 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/JPB602169786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa248215c050db9ed74027bd5eb80c4d87ef1d44ee8117c42a5bb24ef3fd66f6. 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/JPB602171276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d392766289c62cc39d0336ac49ec3cb8059f875cf97b564b0105b88eec5737e. 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/JP92N2456706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388cff29127bb5e6fe066c3b571150f8df10619dd822cab6b9797f76de5d4183. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JP92N2457451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf19741c96a13dc28ecde075223399855e251c0dddc6146cdf440cc3e8d3e64. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:42Z), 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/JP92N2457452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6609245f0e4e835ee32e6b21d69fb105726dd7d9635c1e62a2d61a047e9308a. 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/JP92N2457453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25154d96c74752af3bb231a06afaa7896f61b0e2fdbdb5895e6fc5a9e43b0b0a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:09Z), 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/JP92N2457454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582eac5be76117508ab5c0a132b70b9a78fc9be7177a72f75c30357f55f1028. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:57Z), 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/JP92N2457455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14b5f6e4f60188ca2678bab20b5c30abdc24f2df98fb47d417c69a1caafcd64. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:29Z), 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/JP92N2457456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe045e7d06d1c7a4aa23a50d7f7e5da4213c3c12076138dd2579234810920c6c5. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JP92N2457457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53edc19cf493a4965d30d95b62b9006eb57ed44500933a18a72d6657746c685. 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/JP92N2457458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976f4310e6b7ecfd74410f990c72bb9ca223b6f049a545d8e8c96b9a986f386a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JP92N2457459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4b9af40bd079007639243fab48d9738431dd1d5f5f462fe143ec619bf0ad97. 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/JP92N2457460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e574c1d3237314f0c53be3a7db059843ff441365149383a9160047f400191c0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JP92N2457461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a027a9dda30ade741be31295e29d84131b58719cae8e7f4e100ae687ea7034. 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/JP92N2457462.