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 0x41fbf8d8150bcd02c8b0c6b8b97a6642dbfcb414dcbaa9ef1208ee53809a1695. 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/586807bd-49fe-46c0-8fc1-7c57abb30eac.json and https://artists.proofprofile.net/proofs/artist/586807bd-49fe-46c0-8fc1-7c57abb30eac.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 0x9013c85adcdf10299df0052aa496cfeb9f8c9f2a4cdf303d4afe0698e5335177. 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/BRD8X2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11749458eb2a0cf587c69b817cd3a600b261ac0edc9fa1cdf990ff87fb59807c. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/BRD8X2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a11cf8fe4a8bb05c69490228b4271e4b61e54e9410824a93e700888c2c45db6. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BRD8X2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5af111fe5764136f7a64ba7fa2cfd842a10441833ba9084eb615c081a84e36. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BRD8X2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61718f48e5b0b3adeaf6152f0d1da5152c7ec0a247693a49fd69a05c10342391. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:31Z), 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/BRD8X2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374111beb3ff2fadf9901f8372f8a60c1d36b58345d3b953cab37b8b4da269a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRD8X2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723e85088e4f9bef1696e7d524b45024bb2e76a7d95059ce886b0c8fe227c948. 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/BRD8X2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9013c85adcdf10299df0052aa496cfeb9f8c9f2a4cdf303d4afe0698e5335177. 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/BRD8X2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df519cf2142188cbeb189fe6511973fb69a39e51cbae0ed97cb9df05fdc629d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:00Z), 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/BRD8X2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a11cf8fe4a8bb05c69490228b4271e4b61e54e9410824a93e700888c2c45db6. 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/BRD8X2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6380be48feef5085a54d1abf06b1a565c96d55f84fce2f64edccfbfed4f85389. 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/BRD8X2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6380be48feef5085a54d1abf06b1a565c96d55f84fce2f64edccfbfed4f85389. 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/BRD8X2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab24ce969b97b748b438d2bba204727d37dcd3aea12f223957225b6410fb0784. 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/BR90B2201802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2a20d11754e191f6cd4730c7926043bddfaab142f10c4db0c17d16a9e1036. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:09Z), 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/BR90B2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2a20d11754e191f6cd4730c7926043bddfaab142f10c4db0c17d16a9e1036. 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/BR90B2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfc9488998a2b74843059ae981d14330b1725eca235539dea9c31678129ffb9. 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/BR90B2301962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e79fbcc146a7ee76d0183724517e52668c7f9cb818e9d8bde1aa9aeac7185c1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BR90B2303530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa298fb05df4e222fb8ba9ca9e60b94ceb49a9311ab84162607407af8f4d7e323. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:02Z), 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/BRD8X2400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161f3807ec30d9868292af963f81166eb996b6f56f9787cc61ab87750c10a0cb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWDW2553207.