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 0x17734b0f7fee8c58eae363908fcbbef6cfb8cdcd3b7f5189400562832f45cc29. 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/343a57c6-1881-4ce6-ade4-0e440bc7dee1.json and https://artists.proofprofile.net/proofs/artist/343a57c6-1881-4ce6-ade4-0e440bc7dee1.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 0xd1420d2587edb99719462ebc95e45fbb3687e9df2894fa7c9616a9de1a9d326a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES62093173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5f901a34c62c9a3d05266607cb00fc5b2a2adef3e6e61434564752bdf3ad13. 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/QZNWQ2047823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e1d5ba34f3f8da5e6d23b72bf199965cffdebb29dff595b58dd21bd90a025c. 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/QZNWQ2047828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c43dd85379c6a7e526edf327aaae7f66b85b345ae7e776940cd6a862ad2a581. 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/QZFYY2195980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccf415c8add52c2066ddd625a364b97b4b14ee7d0542a5dd8dd044b57c6d807. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:18Z), 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/QZFYY2195981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22c43d0253267f9035d8100f4b676313ac27ac617e4de24ad9cd987bdab8b9. 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/QZFYY2195982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56bef10d3862072b7fed451d06226d9c847e7c9500c08e690c424a04c56b728. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYY2195984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76157efe64debcedf154be0dd70c67728deaeb87237ce4fcb4ddf34156b45e. 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/DEQ022117280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7273a54be9313eaff8f740f13d74be1d87f36729cd4bf8181a8fb7b1aa17c184. 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/DEQ022113374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e3d53af3262e8f470a26725b95999509a2a51c6e7d6b917af52b4bef611483. 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/DEQ022117447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aeaa2b45554a79f696a746cd5698a0588c0129f288d42e4931d79cd099800a. 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/QZK6N2161586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3beb95ac6457aed2fd0f87cce13507fcf130191c95ec2ffe333c28d2801c9cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEQ022117504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a710279aea1b6a9f91354a9ccf5f398689ab073a0edbf823fe4e1ab131451b9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEQ022117505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e66194e7350e3660b8cb2573957c6b4299a2929f2b1cbe1d980833725eddae. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWX2218526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ba6144eebef9ea03de1642e4553403828650a13e065ce954782fa98a20262e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWX2218528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65802ab2e88c45c5ae2dc13db982eb2c254891bc9c5861a8d2b55032f24e0ea. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:15:41Z), 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/QZNWX2218530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23c2252a98132bdcdf7614bbd378d2ba253933b3144c6413599843e4335e5e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:57Z), 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/QZNWX2218538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72b0b570e95d3f5d55598c0fd4e4f5eb6eb8dbe5a41415dbf5f8439a984f433. 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/QZES62366166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e69ff6710a41389b01f0e0a68fd1ae7a77ef85407415d7acfa499f6f87b677. 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/QZES62391285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e4668c19ac6103fed39149697e37136c8bc62fa6ffc3de6380db46e602e3b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZES72393702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226c868817f4766f01866120dbccef99185ee9bfdaa1967bc6765ebde30320ee. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZES72370986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6ef50eb4ea3bb602f7724f253d7507b65fd408886854955301393ee13bd684. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZES72348937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b244e7787b39fec2844eb5e2c5c0c1bd4d0be48010f9c0306cc3e5d3723404. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:41Z), 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/QZTBE2473799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1ea12e1f1a572d01cc9e67a4afcbfebc50235695c9ae1fd4e03a3e3254bc95. 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/QZTBE2473801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84da7f9c97a660c2af5c723fac260a4a746215b7df915573ba058e3e9f70213e. 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/QZTBE2473805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758cc9e0dfa97a50a5ced7ff2b484863e90166b78afc5858156ea60ee0ab5c8a. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZTBE2473807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12fbc3a4127c3480c1af6eade7e143804d4e39f88044e62777026ae43ec2a03. 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/QZHN82530421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31b5f6f1ece335adb71f60a504aade80e18728844d315570b0b15464861219. 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/QZHN82530427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450d572c8265e0cae0b0124276458d31e3a26d37027d0a567ab75e7a3444c13. 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/QZHN82530431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649791e8111d3fdd7946f90562a98a424fc91f029a1c039fbd58d9910b721f77. 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/QZHN82530437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d7637aece50c0f3fd500a3b0a0bf9d29dc320852f6bfc84bbf7ff922b7d4bd. 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/QZHN82530440.