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 0x9286184e71bdd490b587d4f6ba626a5ad3f6437c083e962a14246db83920898e. 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/9bd0dc73-dce4-4c73-a300-1f0a928e3d9b.json and https://artists.proofprofile.net/proofs/artist/9bd0dc73-dce4-4c73-a300-1f0a928e3d9b.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 0x8b90055b192d8e5a727ec20de2d746395a7754ea54247a326232e7e38b7edf42. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/AUGBT2415032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e69de09dad035978349c6b2ba29b0b7e19ceee18ba5d9589a308b3d122ec80. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/AUGBT2415033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b51c66c6ae1535c2ce2043fbe9e0756b48cc44f6cf9c5216014bfc6a22db7fd. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/AUGBT2415034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c392b9ba47706f8ea20925d3bb1a7053af0363da43f54ffd1afdb33050feb0b. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:05Z), 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/AUGBT2415037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786eefc7c29e1afb9ebc21b90a0c89ef487c95ba079bdd5a71e90bc089c73d1d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUGBT2415043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e12de7ff780a34506694db70ca8e4a49703b9f53b08ba05fab6f08fce67a53. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/AUGBT2415049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf397b1561898b38ff5d86050042222867b7f15d0972b203a3b8f222e33265b61. 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/AUGBT2415052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed6d0d3a16eeb11a5aa017b1bf621d975e73f5baa0b79c393105e952471436. 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/AUGBT2415053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b156da65623f69deec732ed3ef2a336cd79f3b9d4beb3de4382e8e0d74b814. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/AUGBT2415055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00cf4c4a44bc1849b535af9096b87c2e01cad62c879c809e5ce4f1c127609e1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:39Z), 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/AUGBT2415059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f41db1cb3ef2c40122d7be913e21c9ed00f7d6bc9f41f567aef7c6f2dddbb. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:49:22Z), 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/AUGBT2415060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248bb351a81365cf3d84443166dad7b39159e0a8d4b057ab1c69338521bc0083. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AUGBT2415064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae55286f36708ce9ad4e7343600b08b40831be20f568e880d6f0092f58c2da5. 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/AUGBT2415070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8210e0ee99f432015cb53a0956e6e28b7b26ff0b2c3e20c456a8496c30448802. 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/AUGBT2446325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74f9eecd47e9d4c08b20c8b90584d422c0dcc2568211d0da541d5ca6b3d052. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/AUGBT2446326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef354c818e86f76907d4ec0382990128ee95e4e64c3f0bd6a8b4cfa36d65f9. 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/AUGBT2446327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8a274a1cfa3f321733a8cf8c71662b5a8c4173877e332633ea6efb739406df. 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/AUGBT2446361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa987a527667341d9c8c91ee106a97918f409c05afcb1a477cfcc823121dc8fb0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:37Z), 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/AUGBT2446364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626f7ed69ccafda96cdbbfe76bfed9941bf9852ad7e4e1c53b8c9bf7e16718b2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AUGBT2446360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8695635e28c7d8973a7bf44e3a7bd6adfb15adb0a447105457abdfe7d343a5f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2476271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd844b61a40f901d3cb8a59888d31015916d31fed4aa989c563fe764f6872b3. 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/AUQ9D2400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71cd1a372908b2796c47be305e06946846f80e8610c99839a20bed9439eb670. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUQ9D2401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2777614d6726fe8046fea37bbb8e235a3f7445dfd62ba6bccee16d5cd1f8f2d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:42:52Z), 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/AUMEV2534835.