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 0xa596772c9918121dafe643893113aa245942f06bfd12b8b6a4c259328fa668a2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4095ae4d-824b-402a-b67a-fa0ef3390811.json and https://artists.proofprofile.net/proofs/artist/4095ae4d-824b-402a-b67a-fa0ef3390811.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 0x672e4dfddeaa4dcb17f0d487b1adc61fbb53df1cb00bb459d62f8226ad36f19c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:23Z), 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/DEZN82530958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8ba2c1f858bcca8367d414cc43119b87cabd065788ae803f36a047b2751b1f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEZN82530900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b12ae5758f7c8d5fed16524afbea21dcf7f36d2df943f64e3c20e90d74b673. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:19Z), 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/DEZN82530822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72e310bafe099dcc02072d0319f5ba39b0f6bb6458070a31594a1b4620b8d04. 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/DEZN82530949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d2535607419e38b15e742f8ea7bf23a0ffa22ae89515c19b1d6c1b495a42bd. 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/DEZN82531221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe411d14134a54401a3c6735661fc8b9a6896aca42c656f525906b533a4b948. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZN82531059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740263df53984d3298e04dec29bd80bb90ebf0d5ba4e27c97bbcb2db6241ba03. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:22Z), 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/DEZN82531182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3202b8b7c5fedccf16e87e577962a6ddd8cbe0bf1a5025a1af6b6bafb29356ae. 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/DEZN82531070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce40ea25c30868536230982fefdbdec050c0059b4debfc727857dc407d998f0. 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/DEZN82531015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6842d67c75acfba77268eed811dcadda02c7928af64ee70d2920e8b9d113eba. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:21:42Z), 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/DEZN82530887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63975383751f7341c20b855ecfc029416f8f5ef9feede13e6755fa1965dc99c1. 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/DEZN82530863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657174fd374acffea9263b1db3d1d3758d8b04423a969c4734577453b038d961. 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/DEZN82531199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf368e97ca6ae96130890769e8989786bfd7dbfd624b54dc96cc890bff2f923f5. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:01Z), 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/DEZN82531021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7d1e27209e914fe7280482f49257bf7bef6b75d7b33748eab2b36f0c910bd8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:24Z), 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/DEZN82531006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5611dda2f7e524305d2170be7c539f12ae758112eafac0af9ae2988d68927f. 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/DEZN82530973.