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 0x140582d9becfb072c014561806b495661489820bf591da71322b5790f914e5bf. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0437319c-db4e-495d-bfb7-3037d98e9499.json and https://artists.proofprofile.net/proofs/artist/0437319c-db4e-495d-bfb7-3037d98e9499.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 0xa369e5429c3b09bc1bddfaf42669cc54fc62978ef160c93c66fb641564d77c86. 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/USDHM1627319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2c9a7f34911cefb95e5d6806b1a03751a7b27064c2589ed2ec7745bc49a7e. 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/USDHM1627326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d9aada87c574c722c31f8df18e52ce9f82392665b438f777290d8d8a4ed0a. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:32:29Z), 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/USHM91953952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0979a693d054c55f1a7bc8db753a6549a2da8c20655a61acfb24f379974d04. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USDY42116963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48bec0b671b215dd333717144122f379509386c4f16e378c25f761a0b762d58. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGZ2389995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1cdd57ff3a349057dc6102c59b5cf4a63ede850164cd19752d8e7b8619284. 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/TCAHW2447183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f20de0288e6eba5e90cb52a9a0909740a4bc83e0356b0519952216cdcf39c80. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:06Z), 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/TCAHW2447192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e66fac2e68b73d763e6b4061faaeaea8304040c83633db790627172564c8099. 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/AUGBT2484299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8c62400c1c22b5915fc191bcb0fbead8bca538811fc207e97615588107c909. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/AUQ9D2403507.
Alamo Queens (Original Motion Picture Soundtrack)