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 0xb99ebcb6dd2299d11f759aed3caafb977551f9bf8abc40b93d0e048c416f0147. 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/64bc4326-0d0d-4c2b-83f9-246a2e9e3bbf.json and https://artists.proofprofile.net/proofs/artist/64bc4326-0d0d-4c2b-83f9-246a2e9e3bbf.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 0x0cc6ea2eb2bce05dd533d21f2eee038f83ceb946b4e838155e9d52f9f96ed49a. 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/QZWFG2370775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b20c5e626ad90ee622018fded05d52a60ce7ce55dea987b9dc00b9317061248. 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/QZFZ41988734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b76897f9e317c6bee5034fde4f06df423183b1883ed99988bf319d25b795e5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:37Z), 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/QZHNA1955375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ee08fa7f65f75275546114825d9b9065971b0edd7ec40d81bd84f33fa527a8. 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/QZK6Q1944890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fdaf2d5fabbc365745b80fa6af3e3460028dc173d2fe3aa4d1e7c2c5d29ba8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:16:41Z), 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/QZK6N1988765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20543aae849d0e95afa9ed7507073141b6f63722ff670674dec8fe8342f8c55e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TRCFE2412785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0213ecb8880e16dff06aadfc76d36e271b9a72d791b0d5734b8dc5854d7260ed. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:30Z), 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/QZTBE2313768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263265e59704a65f5052121b93ed18b893c87d77a5fca9a9df008e11a65ef119. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBD2340617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263265e59704a65f5052121b93ed18b893c87d77a5fca9a9df008e11a65ef119. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTBD2340617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52908a5f0ccbd6d63381e99adccaf041d2df7a9746c344c05c78091dbaf1f309. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTBF2356351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb270dfb4a7a6e699efee3f5589afc4c38da36521cc50ab9d94b11290338421c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBD2340620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3694d7f4f5275ab65865096a36659159baa972eb5257b5b6085208c92fed41. 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/QZGWX2144978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813ad7ac28027018ab7c5c36d8cd8326c3a9279c82e7bb40a89b4a0e5f95d774. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGWX2144977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ecf4e3ed312fa7e9e62375452495bea0f7748e740c47a0c739ae6e2cfd65c. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TRCFE2412711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca79bdd388e9ea48dba73a0e2bb14e9da7a5ca4ee203a0ba56e6a17ba190065. 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/TRCFE2412781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f08e2ea6e1e21fd88d7a5a11e825c71443d108b0b8e4e18ba934d23e409ed68. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/AEA0D1923945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce7cea4cc2ccd94f04455dc729ff9f1f88d84b66bc70086382d26c57497791a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/MXA3V2410358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3843bc712a6dd23764478ce1fb57390973920d2a8aa86c0fcfd9e7fa47483. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:37Z), 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/MXA3V2413273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69594f955ede803ea82752df35cca3c9731499011e8acab4c99076bf6f4fba3f. 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/MXA3V2422032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b4d3d07d9572c70b2e6daa8fda83a0d35845a6d165d898ae2be6ce00bf038b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXA3V2422031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a532d8972611dbc6a0cee0edc6dfc133188150aeabf5c260444802acc0c091. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:31Z), 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/MXA3V2425154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b16066ed0a13c8ce3169bf5a871957a68945519d0ecacb0813d001dd1918b. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/MXA3V2428093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d9342c9305b005c8b5edf9697517a0d4d9c83e625deee6576139fc624f18a8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/MXA3V2450351.