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 0xe600e8a2f4b4b550ad11280d124ffbb376f9851e78baef1d8b765d25f5f3d79a. 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/ebaafbc1-47dc-484a-b07b-77124d2d58f1.json and https://artists.proofprofile.net/proofs/artist/ebaafbc1-47dc-484a-b07b-77124d2d58f1.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 0x5e549356af1f24b45d3731a59b0742e0c70e2b0617f2042dac75d38f78fa6bab. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:54:30Z), 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/QZS632445444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e549356af1f24b45d3731a59b0742e0c70e2b0617f2042dac75d38f78fa6bab. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZS632445444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40beba746fa76ba597d923370e174ac76af27e33b22a1de13758b789566666ca. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZMHN2462529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791fc6412bb62e79ee6d195fd753143f13be01b24ef78d1c48e53e529ae1243b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:36:40Z), 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/QZS642445289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776d08aea72701fdd8ebe2d3e4a5ce79dffbb6755c1d87ea144411b06958146b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:10:17Z), 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/QZMHP2464787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a5220f128a29e0ab3b48cbc059da34964718f10b96e3a635da2b6e6efdec4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:32:29Z), 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/QZS642421312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daf0485317f0bb91e9806edb764e6bff5c64e83034ba68d4a6c7c0a9793426d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMHK2426110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a00c06e68321a69d94bb9da3977654948ad7c67397e5baaf4af88d437f91f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:38Z), 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/QZMHK2459629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936a5cb89c516e77f0dca7b411a1881e82a43c5c80fcec627471fbc6ca34d7af. 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/QZMHK2443800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc2e414a9d3c0ac3a8dc4fe1b7081c229ff1804fd7c5170be2f89111b111e8. 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/QZS632457588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a824a47dc9e1488d76ede06757f398037dbd5613a865bdd9d615a5ce17cd0bf. 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/QZS662418576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78397a95e9424a9250c285d327a69c0face8aadf5adf81cfbd104845b36abf9a. 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/QZS632444659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678fe1cc6d2b81d04f2ef88e9358b469cc6674fe3c94c80e858ed662b836b58d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:15Z), 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/QZS662265870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2237d51b21af96cbee0eaea54a29c62594d3e7a03fbb57a7dff18c84604863e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:47Z), 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/QZMHN2418033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2237d51b21af96cbee0eaea54a29c62594d3e7a03fbb57a7dff18c84604863e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMHN2418033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897e95407ff7c2a23a94b67174e0004d9ea4d2fb1484b7749eafd4d392192c61. 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/QZMHP2485991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0811918b9a837351cc6c369230515bed8eb5d2ddc6b1596e2393292748ae3367. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:05:30Z), 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/QZS652468252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c33f840f1156b21a4097c5f5b48e93e906d7c641dd637e8bc534cbd29716db. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZS672482547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfdaae75d2b8ee00c645dd3c4f7357ffefb7e0193098c886e46d8be1840489d. 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/QM42K2436008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775ca9668ab19120651ff31869671865d0c0cfe55de49ae2383b97f96ffb9eb1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZMHN2419752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e48cad450a6d8b27e41851108a115e8745578025e7368152100a430f1d3b57f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZS662416347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59133bcf314e86af22082fa69cce9d49a66f346e67b2f7a213c329b4914b6b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:11Z), 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/OZTB22599535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5724bb30b1b238da268146791a3f3cf1d3fa53f3ce544196392bd897da894c79. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:47:36Z), 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/QZTB22599535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b759b4604c4f5f4d8e289ab607d7be7043d4694e48df91187845b70e330aca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:18Z), 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/QZZ7W2509631.