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 0xb912dd6e5b2e6e6d20508f359ca5bbee77f25ce4be014f209e688e2b87d26d64. 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/ca698cdf-5b7b-45c6-a9af-544ebf59b160.json and https://artists.proofprofile.net/proofs/artist/ca698cdf-5b7b-45c6-a9af-544ebf59b160.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 0x1ccfb2479d9eff35e4930ab68f26ec0a1136a98caff04c9a53357bb7eb75c51d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QM7281880826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb5ca8869934619a27d22504021d8cf4cc9910db75e1fba691eeaaa230b9663. 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/RUB311913004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4682961d9b36341be828c6367c8fe2eed5f406473244bb612bd1aa9f5f0f565d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/RUB311913006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362aa8e1a77c696a3a646c123058083fe14fdc9615db95f5cce58f7b2e17d844. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/RUB311913010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee07b35e44d19aab38d07f33295981463baf40a7982ee79c2906839c99eac695. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUB312006902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c26bec032ecd00f0da8c56dea12908170f02f4cbf82f8190099b6c53ef81c5. 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/RUB312105606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b0dc753e41ea5e09f93afed58c17a890e4613baef6025ce1130c58d02fb9b7. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/RUB312105610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c25bd2eb4c0d98aa01d34d270904cabd897595869b8e2889fdb4667fd3313f1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUB312203002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed806a8d18840b35d6789377f02dab7ed2136563019ac6b9e0964d903104249. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RUB312203007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba8099cd6e415e93af69551e0b3a9b16b5b33453ee2c7f17de4ac3eafa052d. 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/RUB312203010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baaa60e61d9aa975ce5d3e92b180b84dcfea0c3cc6b2f58aca6288168040d58. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUB312213307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9bb40116ff774c7f030d294a28b0613e3dd4f4bc9659bc8c72f2820f40872. 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/RUB312218811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f01e378ba8fd58de4cd1431f25c5748e71663f8a1246b4fa54af8cafc0fd2b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/RUB312308604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c894229d9cf9943f108d6eaa81018d688f91fa3e77c320b6af2d7e036af4d1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUB312314809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4974df0a29e4bbe09a6b230867de81a56e25c74931a9eb61fb5e3b3dd9bdb5. 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/RUB312404601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63970232d395978a9543ff16c8067772b0b3d7985a26f57a011f571206df432. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUB312404604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1803d086fe9d89519429d7201dce9f25020d9edbe30882663162af1e8cbd0aa. 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/RUB312404606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5437e1904bd90c577c978796ce697c83567157adf7f54da40e416dfd5d318e92. 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/RUB312404608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc29f6352d0b297b747d014447e7980d81a5214af2e6ff38bcf9b31cd9ace236. 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/RUB312417301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2001034a1aea2a3c0ca0bd0e2716c7d250ba7db5efbceb3f818b2105d659a4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUB312501407.