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 0x2b26b25b6ca764a9ce1de0150aa56d869fd1e6138cd0e85e784954dc89707d87. 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/b3eb0da3-0f40-4583-9054-8952be93b0d7.json and https://artists.proofprofile.net/proofs/artist/b3eb0da3-0f40-4583-9054-8952be93b0d7.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 0xc34ef59d6bc83df15c15383e0d7082383a92948dfb910123dcf8610ccb59fd35. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:52Z), 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/QZES71946389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e60bf1ff2d7eab1fdece844165b3b0eab9edbd9412bc40eb99bee9c8380b4ff. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA62125159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391bc90282264410898d83241d0ac5a43c9441ba8891b099682c8dd7bc47772. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:00:29Z), 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/QZTAT2107522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4ca160e589262849ef0fc64de410e603ad762289c357bd95c0bbe8d2ddf649. 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/QZTAT2107523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b27c155f2eefe9c219a9da7c529143db9290971ff64e730427095e750b1b03. 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/QZHN72207338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bca4b0c9225955af6f04f495181a269a6e848cad929bbea81c94d356bcea56. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:45Z), 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/QZHN72207339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718340b787fc04202a7792862d6c1536d49bccb709193bcba1a8eb6b1476d3f9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN72207345.
Benjamin Brockavich : Nerd Bars The Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440553b32f0c83ef9e5636feaaffc3a5e54ff56b9ae898756ce8ed7e0ad8a660. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:47:05Z), 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/QZTAT2107524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb7d48209c52291fee78bf468f011fb3f99cce9af1ba1f43b6d7b7caf4c6cab. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:02:21Z), 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/QZTBB2363363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbf8639294b270d87613801348ef93b7a3d6ce5ad2b5b9fd7757ea9d55fcf92. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:41Z), 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/QZNWS2439145.
Real Gangsta : These Lyrics Did Not Match The Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dde9094411faa79a8be61a8b6db8af002dba0b82f41c5d70d25ca0586f9eb8. 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/QZTAW2453458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31f0aec414e69a201d25ebf6225c5d57949f2a688a4b98aab5959223db14194. 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/QZTAW2453460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cebb71cbb1fa8c1c13a5e39002b9f2907a6716a4ca5375fb144ec78e624e7c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAW2453464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf277d4743f8ec98c5a16d5417cf5b7d815c4e4b06602a4a7c9efd30712d8a532. 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/QZTAT2577104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0306fbaab8322b0ee444dd1f7a7798884fda3a83f7cff23aea634547086b240. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAT2577105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebed5e8736968ff61e887fd8d7689d432bc96addac34bba6f0001ff92281ac0d. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZTAT2577106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bc32011c6476d5d317ebb8e7981a0b776ec4b26e749676939abb73052941a0. 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/QZTAT2577108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf61c58fa7d3c941cb7c714878273121f8df32fef847c268755a75537974f93. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAT2577109.