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 0x7fb04140e1b044e064d8ca2a01d34fa6223979f7b76bd065cdb9ae68031d7602. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a652793-3164-418d-9bda-dcc051cce606.json and https://artists.proofprofile.net/proofs/artist/0a652793-3164-418d-9bda-dcc051cce606.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 0xfaa4a9fbb03a5d3de0dba46860ecb90fd082ba695f9d71b5bd4017ad0447971b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZPLS2429571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aa3b2dac4af07e0483ed1320da5624f2cbe9afc5f3e9824db7d4f1d16b8423. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZPLS2429572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d565f23bd16f273e56099116b1fba033e7b1c72ffa345aec359ed2b7936f85. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZPLS2429573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c130daf212b4734a73e3b0c3d3180ae366adff2e05a588dc721667d3c82002. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZTBC2494765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ba14ba7be9b04fb71aa38918f2caffe50e3ad17cbd43ea7a2b4a9d6abe420. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZTBC2494766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d431c78376496a2f1ab0f6486613be72826ca4c57167606361012fd9021914d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBC2494768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bdb2d52f03b34ba1202d93a1b19eb6ec82fdf0991adb5275f9616717b31686. 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/QZMEN2552812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32766925abf0ae2da92e595b0c8679af23254744ef38c4b830fa1ce206cfcc1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZMEN2552817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d24578f34e405aac99cac7ae84cab470e7598d16bca984d06a5e2ca3f37b4a. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZMEN2552819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aeebb90d1cf7e212e537f7cfaf46aad41b922d58bc6399213e9c2aced8fd39. 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/QZMEN2552820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2aa6c14b3010582d33d3ce65938a6fc735d7a53d95ec6b270fde5342f5b5e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:57Z), 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/QZMEN2552810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2874deca105594ebc1a21923ace1e80101fc763478c99f28998679a923de032e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZMEN2552811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf04d3b46032ea9e0bc14e67c197831988359303288481f3fed7149c7a207a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMEN2552813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c68a4731e2b0e803f632eb3340d2e6c8c588e492bf49d0635a08e27a5f35e7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMEN2552816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32766925abf0ae2da92e595b0c8679af23254744ef38c4b830fa1ce206cfcc1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:02Z), 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/QZMEN2552817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d24578f34e405aac99cac7ae84cab470e7598d16bca984d06a5e2ca3f37b4a. 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/QZMEN2552819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aeebb90d1cf7e212e537f7cfaf46aad41b922d58bc6399213e9c2aced8fd39. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:32:29Z), 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/QZMEN2552820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dc7a5b2f9c7901a6081b1edee5426f5f1c2cc40309ead425226aae94335722. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTB32503939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9497dff40aef6fefb67456dc7d205cbaf1535896a723f7d82d24e2a03c1965. 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/QZTB32503940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760d59e431613acfbbaa7b8d7a5883793c081e366381ca402920d101a6cac611. 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/QZTB32503941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4e7bed3a4254b096b0cc6e8eee10d312abd6a3085cb18f89c3ffab350994f. 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/QZTB32503942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081322a9236c668bbc6777b7115f2d125a2389fc2b111cdabcf515f601617040. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:47:48Z), 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/QZTB32503943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb6d7d1c0c6ebd79841117b3c51e62a78fa88988989d64c315b6a3c690a2ab9. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:50:43Z), 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/QZTB32503945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4db9b327fda073ad71ca847bf92abd8d4575a2f51792f02dc1f125591863f3. 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/QT6632572247.