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 0xec9d153c16792067679df853e56773164c83c020458368c6ca6c26bfd9ca846b. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c197bd5-5194-46b6-9962-9b39bd1ff518.json and https://artists.proofprofile.net/proofs/artist/5c197bd5-5194-46b6-9962-9b39bd1ff518.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Searching with My Good Eye Closed (Side A)
Searching with My Good Eye Closed (Side B)
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 0x51c1ed7bd97a25c94358ba8c369d46ebc4ca3c456c4f147d001cbd7931ab6eea. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZK6G2319549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae39a5453bffae569d6a25ab06a148f81a4bedeafce624a08046655b8632344. 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/QZK6G2319550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda0bf74f3322fdb5a710223c9d711ebec35b7bf7c6c5f9aeada9aa2b183251. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6G2319551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec40a8d3a57ecd8a1705024ddbe016e0d7c584033ad550aa770f24c0f8245db. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6G2319554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681ae6de5cea5f391400edc77601854c133c78ef0389158ac899cd4db1eba2bc. 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/QZK6G2319556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2d59b2a403fffd9f297012bdcd1312cdc7e13e829f524d68b4c376a6d85e05. 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/QZK6G2319557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2180802962866791cf7aa4ab916b4bb3c1494cb784090490e346524b1098b7. 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/QZHNC2311249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2240b6664b911017c5edac7538467c53ddae8671ef4e89ebdc5b5b24088bf3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWQ2428789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc395f3a2f333204cd45b07a0198371353de5a094252abf8d0eb0238795f3a964. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:11Z), 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/QZK6G2319555.
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 0x59aa97a1ed3a9675fd79f0d869a5d66cfdc91683605aafd85e8eb0b674c2321b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZK6G2319561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8b3b9462a182585464fa3cc9c08d6635c42c3c76205cd95a8f4afdc582ae8. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZK6G2319548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a441eb5e3d026e661e3060394edfc15497a145c76d4bed1cdf1445d7f1d1b35. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZK6G2319552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b119b565515eb1183755c0cd3f11fa74fc4dd76dec327396b162d69b1f7258a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZK6G2319553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d81dec9c5f783d19c0592df3ea238de72cc99f261902c72a6de5caab4c3a6. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZK6G2319558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73699446746ddfbe40c491304636f5f786dc4b715ea9e89412142abf6bad86b7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6G2319559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2264f60e00b26496c2d9b9ec2053bcb1513a398eb768cd70d4df1c7deb60b527. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6G2319560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7466670b04bed7d2aae561fcffb06fe8e8156dbf1a9d63fd41b3b05f42cb447. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZK6G2319562.