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 0x310cd9c2811f71ddd04d7a212e5799798256dec512e4bdc8f3d7061a19006250. 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/a89be6a4-2641-401b-9daa-a85316f6845a.json and https://artists.proofprofile.net/proofs/artist/a89be6a4-2641-401b-9daa-a85316f6845a.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 0xed3a43cbaae1b38b4a5f45f1a473b331d90e576f44d0a67df1d129cef0cd41a0. 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/INS180461489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff360962a9e48de3cd85089e06ba25ddb2564c31719c56769a2520d697fce4e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:03:34Z), 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/INS180461493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9f4066818c71fc6a0590f1d1470069bf24d8b000d49168c0039d7ffae02bf1. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/INS180461494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9816aeb18345722a2882657bc940f12fcd1b9d33efcfa1c3b49506a84df017. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/INM230900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b4c2fc2319d43867eda23a028470fe00ca84ce618708e8a4bf780d2721976. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/INM230900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f43d4c42d0a7405c278b976053cbb0ac01f0c2e75c2019f6469e1c714483e5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:53Z), 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/INM230900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a3f8d47a69a776ea4543ef8de14f229fb96a6a618585d5b30694f97d6a5c91. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:39Z), 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/INM230900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613407ed053c263d7ac8c17ecc61c41ac17f9484ff47af87d5488248ef44027d. 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/INM230900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484875100f3b5d0553cc100e1ea0f6bbc1ef613039f7aabdf94ee29541be208b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/INL231718883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea24e9dc4e728c4afd40d0561fae87ec0291533d946a7b41ced07e3b2e73ea9. 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/INL231718885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f17d06b129f24e442b9d04f4f9755a8fea3aeeca543ef8882c745c24baa728. 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/INM731601272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee382bb4d44dba2f52b6d20b120acb883e3983e995d4d2a33af61980fbad03. 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/INS402003121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ed90384845762789209da8d31ee3f7f24269cd569bde4a30ed1ff937cf6a0. 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/INS402003124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eac45190b9eac4f07ffdb78532ba08e81279dd1712a6827ead5bc327b69f55b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:50:25Z), 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/FR6V82527435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097aeea91eb4056ea454fdb45578db5981b4b0fb2f1856c24e01ed0244c9242. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:31Z), 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/QZZ7U2468093.