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 0x5f520acc6138768d401fc123e6a26266823695a6f8f55a9682ea5adf9688a871. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd350a46-7d5c-4c93-b1c8-87ca12a88b53.json and https://artists.proofprofile.net/proofs/artist/dd350a46-7d5c-4c93-b1c8-87ca12a88b53.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 0xf74d1fa7a4524a01f359cdf3a2a6aa99df04aba0195007cf8235adf8fc7aae31. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZPLS2319918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de1dc7e98ea7d462ffd0250b649c09801627cd3e33892efbcb897586369baaf. 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/QZPLS2319919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e4040292b8b2442bb521cf434a91b96262ff2ef0704fe62f12ffcb93b2c6f. 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/QZPLS2319920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ea2db241f014911e3f89e5c59635700b939d9e7d40c195ffc87e996e43ecb5. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZPLS2319921.
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 0x15a9f1f04519c4ec039700fdbad799fe05d56edd0cf88434eaf98bfcf479ab75. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZPLS2319922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd939e144e7061d4e01daa090afc43d1225916832a7438a76bff13373b4886b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEP2303570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfbf468c51d02e2563b1d66935107cc78d6bd3a1f273e399aa1899ccfce2470. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2303571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b74bbcfea38145ed6f4241a044432104a194df8a06950be63504db40e67f9a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEP2303573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6207268bad3de501389e1e2f3601448b955ced09def813f6ea00f08f845c4483. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZMEP2303568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea74b9d54b9b97ebedd3d432e1c07c09c79217cbf193650c7b107e80e577a0b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZMEP2303569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f41680414377cffce03bf8177a777b40e89a95f0a0c4d52d5100f2c9d642ee9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBWUL2210522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae84b0c118ffd99de8c98c4714464fd874ffc382ca698d34fd856c0b518a0176. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBWUL2210525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4809508cfcdf7dddc46f7f4e1be7f753d10398054fb459f5968b909973f8e6e5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBWUL2210538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce82a4fb2bd7eb6044f18458a481a05202bd82222db1f678c4d9e6e16d09b6e. 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/GBWUL2210540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64875fc732924bea2220f22406340f4187fc1993aacc4b915ec3fd09825b937e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBWUL2210523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ac033a5f16cf4f5b7981368af8d6b8b19d3a8f44fc2191843d67d71ab5ad63. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBWUL2210524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5479fe160f56e059bd4b893c1426d5d725d007cd48c49ca5988c4a0609c12d59. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN72166140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e012144e6152d568b4ad8f8dc2f0fd10c96a3cc4c8f9affdc95b45ebc444f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN72166143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d888e8f9e785f7733670e9ed73737ae40c4f7f12bba93efc910c7354120b72. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZHN72166141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3060e62e139e2a4ecd5a1ead3d74908be77bcc4a014ee4a9889fba781d398b7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZHN72166144.
Tidal Change (Psybur's Bright Future Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be4e65a198503c81077bc57d6aa36d1a00423e8b9a8d2fe4f63252d64c19473. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAW2278290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844aa5d11304156d3ad60b856a7fc931a278ddd849d8752b0f0b4bc04f5706c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWS2126779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd442288f29a08c0dc59f8bdcc602935fd855612ba19b7cc012f3c582b4bdbb97. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2126782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d22b590c52a33073562ae02b855b9fe7eef804c08e9f57bf4392c176265914c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX8KD2360848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94765673b28aec310944167008a585b7b417ead050aa5015ff189e40adc5fbb0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX8KD2312358.