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 0xc7f6f1f59dd38dd73848cc0e061416a92d19fc8c5a3a631cd0e60f25aa9d75b1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfbc24f3-f060-4476-9e91-b841f5de0e42.json and https://artists.proofprofile.net/proofs/artist/bfbc24f3-f060-4476-9e91-b841f5de0e42.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 0x09feead9fe60bb9391adf7930a4026a529be04e83d5b5a987211bd1e4343f058. 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/QZAPG1874595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4942d1ff9bf5b2cd1f335481b9601e87bb1d10cb1c30277694dafe9df0f9c979. 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/QZAPG1874596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b03f889e88ba9147675de12870b4267a500c6073b2588271db3938d6b9769bb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAPG1874597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17607a4c5ab960850baf6145777c6f88327c92fe06263de94f74a3f3744b335d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:01:29Z), 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/QZDA71831993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbf8e809a66858d0fa38127477b6db079bbae4218f8025b756c958b95ca3c41. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZDA81993707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942fdadd486c03eccbf3e89d6e13154f43484fb019629ca4a2505ef0853ea8f4. 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/QZDA81993709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4561126c22ad849581f7f3350af2609b3df944a92d3f736e43ed14430521c2d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA81993710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b74072408fded9704fae1d30196b58d362a5d720b12b204b06cf83d28e9c7f. 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/QZDA81993711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391e98c240a04402fc7966e05352bf17dd3cb88f87f073e2b13132eb5fc5f76. 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/QZDA81993713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48939089e9f8f0e4695e1761844d48539de947ec508bbd0a7ea6b5f44770f2f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZDA81993717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c1b3ddc904de2107f9d64eb8fdbce17ee880be72e1989fcdeea4fc93f69d86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA81993718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdb0ab2060c1652959d0427d997c35e412557863b4e665a691d99dacec4563a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:38:24Z), 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/QZK6N1984848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2920605ae9dc434092696bd1b426773994bc0d86484fa45574acaa1830b47a51. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:59Z), 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/QZK6N1984849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c33f3f3bfb9de30f4aaca4a21e7590a8ac05ffe1ea1a82b4aad77d9a522388. 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/QZK6N1984850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4e20a99bf0e6252b1201ef97e59ad7b39557e70ed30354dd9f534140bac8fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6M2103431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5b7798aa2f60a4352dd1597945754e35df3d49f777523da4285feeac9683c4. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZMEQ2164711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca798eaada42f6472ec8552c4a22aba8317780d56e586892fd33c2bcafcff6c. 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/QZNWU2144599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21f686d9dd29cb6674ac49ceb38a50641f9ee75e1841f9cf591e3cd452f476c. 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/QZNWU2144601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b7e2fae50c8838bb62ef3b3a80f1f3e4b8be1dbd9b36e017122d6a131b428c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:35:36Z), 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/QZNWU2144604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b3652e8c70deebfcc63088b73cf66088eba98f1e86f0079e2f156719b4c3d2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:22Z), 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/QZNWU2144606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8c1f2620e8c75a4f53d69ed9a0d2ee37a6a637dedfea9ee8c3e42350f9cc88. 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/QZNWU2144610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300aaf89bf0d154a18be3e793f3e18bff6ce11806c3ac2c158292d2eb6e560b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWU2144611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcc67bce31929d090e0478f6f60e29e1d99fea1eb7fe2d002ef160506b9f56d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2405983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd1ce2bd3833f94439f43b15066f0ae5de66ba217d5a142f325461b12958945. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZTAT2484389.