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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c2069b27ed254ef115f2236b5a0840c074c48bf37cd68eed81ff2272890d23. 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/0d69784b-c1e4-43a7-a35b-373cc9d3b99e.json and https://artists.proofprofile.net/proofs/artist/0d69784b-c1e4-43a7-a35b-373cc9d3b99e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049ff089071da9865bff40066e2a50de35471b4a0b9a2a98c8694ab5ad0456f3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USE830951156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8e9a6970e7b62e10a37a166286c88ecefa596db25852ecd094e1bc583d11f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USE831537503.
Megalovania (You're Gonna Have a Jazz Time) [From "Undertale"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f23b530bd2fae5491b0975a3c544a95634b1ccfab01201d09c46e0938a1a94. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZ4JJ1624844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aabf7d7a6cd2cea69e1370c98c63b582710d3201ed4a74ea28db77d471e962. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ22B1974301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803d7a2f8edd97878fffbd7dd30914f3bc4a26abfa776d1151e3c47895efc1d0. 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/QZ22B1993910.
The World Revolving (From “Deltarune”) [Ralfington Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e60b1598fcf001053e8cb75b92058ec2b06be0d3e69571518ca428934b88cc. 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/QZ22B2028952.
Field of Hopes & Dreams (From “Deltarune”) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad9edde239807153a29c99064cce1322381e9f6341262fc7b786f3f10e519b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ22B2089361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3ddad765b749d437319174f9fdadf37f4193fef8dab70b0cc6ab7505a6111. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZ22B2089362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbc769b3b2df71dfa8add2df1072c67795cc7f043b9936d89416db83f7b5e9a. 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/QZPJ32111930.
Pursuit ~ Cornered (From "Phoenix Wright: Ace Attorney")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43fc00fdad17e7652bdc68aba1496c48b31f7fa090fbb803438c8d57519eb65. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ22B1739605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383889e798efe0b4a7fd841364288f1cca774bcfe4a195e9c7b7a19da44375c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWW1993071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67192e2f5ce83c610f8f24e8c059b7a246ead07587501ad988cca7c47055ccd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGWW1993078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb419ceefdacaa0b2f82dcb6a6370c78321d6e8a061ade120ee40efd72d15af0a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USE831580923.
Welcome Horizons Lo-fi (Animal Crossing: New Horizons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ea1adec59439f7402a708c1fe61fccdd7de906b4e6993b624dbaef4926c2fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWW2142442.