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 0x8ff7b00862bb99820bfbf7632bd47af6c0e3e7249d666d556a3007b23edd7ed4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d116eed0-2b62-4189-95c0-0acd1a163af8.json and https://artists.proofprofile.net/proofs/artist/d116eed0-2b62-4189-95c0-0acd1a163af8.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 0xeb773382155b54b8b5de3df332fda8549e976abd3123e908d477ab60fbcc8228. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:31Z), 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/QZKDK2126450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf156ab40029dca9c9acc283aeea0509b4ca4d369a6d32bf0a375b4ee1bf70802. 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/QM42K2114765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884e5f0e25ea2b7a64270dfa54efd4971d810183590994c21bf9307c686bd265. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/QM42K2122547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a310e31ca06417de72723cd366744e5c222b9b30634509999b4053bc6f230. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QZKDK2169382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e925adac7746e6b7f8d82016cf82fed4b7f316c56e1d9b5c3d08c573de4ab1c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:26Z), 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/QM42K2129965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c43c5013c3d38f0941dc4f972a85730f746f79153d5a5027fd259d2350fe0. 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/QM42K2176602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9f8a535faeea8f534364b625213f78c6f31d2f9af13d39c62382d1224b3603. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:50Z), 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/QM42K2138707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d28fc545426ac91c0ae7d13903e476b85f685a02c7d7247b0bce541ce39f87. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZS632199035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ed18c4c0c4d22c1decbcc4fc33119910f1498077c77792db759707bedea424. 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/QZS672107358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70af5230d74666bb44fa6cedd06fb667a65807c60116fc7f09d6fb97bcdf040d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZS672174073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736921d610821ff401ec1726117a6e13c4bb64d0992e5d33d4b45f42e0eb8127. 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/QZS662148846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309bab230e73edf17344d260eee6aa53657eda4679bced958c8fa52af34f4322. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZS642277237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c431672f4aaf47a9653fbb8993a3cf16dc3c6877d002ba75fbfdf49afec9e71. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:06Z), 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/QZS642275709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9963ccd8fc172098979916ff80bd95231de8272352618576f0acc2deec02e0d0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFP52454434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb94cf281673d443cae589b9d28287a4ddbc481a9c038448a0972fb556df753f. 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/QZF8N2146842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fa0188f042f73284c577e5d9185400a7b78dd61ad6b48a964c794691246f78. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFP52454433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9963ccd8fc172098979916ff80bd95231de8272352618576f0acc2deec02e0d0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZFP52454434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab77437243a3363e9f84d4ee0129554574d2029a21aaa57bef29427803b03094. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFP52454436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6b9947b14b887bc52de0425d2ff2268345fb8f4eda28a9543c4f117ea722a. 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/QZS672513494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500f56a8db74ac33003193fc31a952bb520ae4444b2454af6da3153078587431. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZS652528790.