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 0x02f41b1c0c7d572e63f1d401659f1edfb759a1c431019cba4c1409fc15a36aa4. 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/e9c7590d-ca64-4c59-8ea5-92e9332c7559.json and https://artists.proofprofile.net/proofs/artist/e9c7590d-ca64-4c59-8ea5-92e9332c7559.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 0x7015bc06ea8de2b270f62b74879a33a92b31f73a676fbdeb1d75ab61386b5c74. 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/GBKPL2209596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a775f9016fe3e593ba0d8b17e1742f5ff5dfecc4510508f9c8c33f3b9bf99cf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKPL2209110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1f8c802b831fec2b4a65cffa8c92be1c96e80aa21e6f23e72cc5aae0c031f. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/GBKPL2158850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc619edab06e9ac70ad86035767586d992645fddd50d31abded027ad1fac7d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKPL2209597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6999697f0613553b8355918b7dc9883a3f664af6821f6d6a6059553e282cf. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/GBKPL2286028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb32dcce5d8a64a324c79a27d599c79d4e920ae2f062c1c05c25fed91e9154f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:26Z), 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/GBKPL2292734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34346a467607317d7a2a601c4d6f861be5f618b9c0b8d7b40a9f642a100ed5a8. 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/GBKPL2209595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf260b19366a7ee76e6fd133857e1491e944a0b6af8a461c21863f83aca0c0a34. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBKPL2297552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26243cd34608b9eb3cce2473f4e3fecfb1279627f7f590b54a12c13587f986. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBKPL2204730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa40806ebab123b3fa0250d9d2e4cc063ff6c835261cb32aee6f645fffae5704. 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/GBKPL2163618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a92ceb6ad8fbe651cd773b02874931210681f8d969d5d3cc0b6658f34217ba8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TW2317224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940af03189a26657b6849674fb88fd5854d534021f5d32bbd708c9c9bf69dbaf. 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/QM4TW2374718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc0cbdcfb43f8b7709533dbba220a23c01c47100d1dfd5581354a9af2d7b5f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:21:05Z), 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/QZNWQ2330799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae106a0693436743bd75f8ea303087943592db931f5ddf9dfcb6c3d8fa4c5fb2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:42:27Z), 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/QZTB82381605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4135d359df9a7481a8d75c86634db7906aec36c42506c1c8afd79d5a102d0bf. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMFMG2372329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69672d2f11cd2e7cbb9c8b24ce926aab3231329ea85f26ba96cdc7cc83bc4de7. 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/QMFMG2377861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d470db467a839a9ad36f7aa0a0eb2b5a724f2da74d98fe737521d0c79e4c5d6. 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/QM4TX2413796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6842eb212604b7a36f27c5859985b7fe09eb0e94f1d8bb350332d2ef8b3178. 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/QM4TW2423830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a25038d5cf60745f108687a327c87c901ead3936deafeec80a957276118cc62. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM4TX2483832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721f3325d26cc4b407384ed1683437d10920ca423a83eb35ba6363cf5915d3f9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QM4TX2430887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0a1a3949ad47e7b6de4fe1ccd12d343860c1591f4eb2970162560c1bce545. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:56Z), 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/QM4TX2415199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae106a0693436743bd75f8ea303087943592db931f5ddf9dfcb6c3d8fa4c5fb2. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/QZTB82381605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d470db467a839a9ad36f7aa0a0eb2b5a724f2da74d98fe737521d0c79e4c5d6. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QM4TX2413796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8e50b423adca398b37f8aa5e76e34e3e4776f956d8f48efab387f822361852. 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/QM4TX2415216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a5fcb28314d30755035a661f13aa85aad568d944c8e503d166ce010130bb80. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2415207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc0cbdcfb43f8b7709533dbba220a23c01c47100d1dfd5581354a9af2d7b5f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWQ2330799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b26869c4c65ad1ae79af67ac43e0e9ec55207d8f8ef1c83b13263c1f9cf3de7. 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/QM4TX2430869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39036813444000d69b2dd7388ad0f0b2e51bd219744d6f24770f5719ccce24a. 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/QM4TX2415197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cff571bfe3d085758be284d4e8c2f857e00cc7b5c2453ff2d0ce094c1a33bb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTB42226438.