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 0xab090cee07e565344e29b41bbaf93e769c58ee2b238772058c3cce1ad6ce5c3d. 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/480fa2c5-8908-493c-b427-b727ea9d01df.json and https://artists.proofprofile.net/proofs/artist/480fa2c5-8908-493c-b427-b727ea9d01df.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 0xe695f2add2dd88dc6720c61147fa603b1a28040ccaadcbe6c24ccfed0dfb08bf. 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/QZHN31922600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23f762ad1e91e97037f74f27d7677f227d4dff26890796f7d0d107392d202cb. 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/QZHN41944284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeacceaeac41b6a405642f7fb690804574f2a61d18f3829f51e673d1663fb01. 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/QZHN41944285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5b5a65e9149bb954a0a4de5bc275c68a571268d9af6f54f0d55aacd5e3214. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ72009454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264e46d971581d76cc6c8c7ed6c3847ab68dc66480711413fd6dde37bdd2277. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAES2064174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c24938d3871a3237576993b46e583e9624a6666b64d39dc08f099ff468b545. 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/QZK6L2013031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c7b00642db3cf1b4516fcb9dd355d10a104628c3a26ef68980723e89ee5cf4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:48Z), 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/TCAFC2057113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e75d3e4a92f54c2c32ab9db3e18ba38765cb6d45367c5415a202cc4497cd3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAFD2088795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480c4f52f982e64e72e170afcc51b3f2e5ff739eca74d6b32900d94b2095bc90. 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/TCAFF2010423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9205b93d87915756b7df4f903496758523d6384ee1b16b4250d145838fa2d2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:08:07Z), 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/US3DF2207480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa712644653b8e9a5449ad285225ead46ba02903c45049b189ce8043dd3490c5a. 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/US3DF2248182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f085b1701ed115f7156f52927817d793fb911d563659c9b2534a1c61fdcacd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US3DF2273345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd436c16c6b770cdfac4ad79898699c7e35a99d5c5742737193ee6c74e8855f. 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/USANG2240926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf93f61ccb761f15e74c5b16e777175dffa3bccb43c2b7081052a668e68247. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEW2003293.