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 0x37a3c9c1d649ed195896ba7117ee254e3888515945275e2b3a565151eb86d357. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39e69c35-23c2-4606-a3bf-ad7c326fd240.json and https://artists.proofprofile.net/proofs/artist/39e69c35-23c2-4606-a3bf-ad7c326fd240.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Too Many Mistakes (Tian Fe Remix Version)
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 0xd5de0b599ea4fb2dc2e3002cb31091fe0b39f6b81272ed6b84605ce2a7eb7c2a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN52448791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d658233f709200b2ee44bf9dfea4a0c02091e0e3723dec20f398630dcb92ea. 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/QZTAX2481568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e92e2350d18cce07023a8851705aef84261fcfcd5b829a211eba0ac85dbce3f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:46:56Z), 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/QZTB82463344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68712cd68b2487845c6c892f048a0aa189e97f3929ef4121ee3793ea68bd1607. 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/QZFZ62588793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6c08064b5be0c29012aa9218a94750829975857e1e68bbc8a6cdf7bea39fe1. 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/QZES82557089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d229a2dd391f2fbf7c897aaf614ca9d8868104365a1ee51d15069a8b83c6006. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:00:39Z), 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/QZK6G2521405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40af06e90022f4d1887a4f840a26b94cbf7b820cc82f9a1fc6a9d6864d14cf62. 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/QZK6G2521407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6626aa30f5d24e38f7c61f9c65c6153a99fab98ae715b7d3b2e14206d39dd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6G2521408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9607b0acd6ae5f8785f746d8bed262a77a2933634e4a4e371e74652828f4a5a3. 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/QZK6G2521410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffb6bcd2144d6a6366fc76d73b4caa1b030a68d2758d3086f3df1c5c97ddabc. 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/QZK6G2521411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0346e90849177c0174b58058699fadb89c36c6fa4ca349ea7e562138715940a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:19Z), 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/QZTAZ2569319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d503842e3314b67009ba7f97257d9b941f046811c0b58ebc09c4b7a0bbe5f4. 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/ARIXB2104847.