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 0x4ad4a69bec7e428ade343e36813ad7a702051cefb5bc6fd696e753979ecc7356. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd8fed4d-3b86-4568-b0c4-7b0cf6873cfd.json and https://artists.proofprofile.net/proofs/artist/dd8fed4d-3b86-4568-b0c4-7b0cf6873cfd.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 0x411e4c49f5dbb6bc76999ba13996125cfde09f411360b60067c38ac4da182746. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:20Z), 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/FR96X2013194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25df98d22ceed87c7689c3054ef3591437bcffbf182f5fb9dad8e41f3b8dbccc. 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/FRX762110201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469a02a37fdf70dfde0e5b0b1caf8c21da931d922869b66e59f2ee6f65927652. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/FRX762149147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601d57e3634dd722b50dc5c9d4a2c29ae4435a0c0db758df16ab8763bb96143b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2205576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7939f2d7454ed4a2de3926a971775eff59431866f10fb5149d6852c2d0e059. 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/FR59R2205577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48f19649adf3e64b45185b2d199be5d82245be7f554dff18f29b3318b71bfba. 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/RUB422201463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ea99fca0f6bfdd105a99d39b2e874f85d78cf69e254d835f06fbaca16a045b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUB422202180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c09a9b1aef2fa23f3865b168c1735dd4f85ea7b65cb1a52482b5808e35505e1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2342287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5decd517e03ef196cad67e29184edc8217adefb5582c31697eb2174442afc586. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2451571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0295b030d620c296489d7f303daf804f4bb548f1c80b11fa49a6fa881e129d. 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/RUA1D2451572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c67fed139208a93c2a8bc8b079136a6042df3dd51ac40a31e1bf08776b83b1f. 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/RUAGT2404135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d1059cb8d098c6347b655da6f420b6a39ceaf9dd297a0b641c6ab7fbe227a2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:48Z), 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/RUAGT2450503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed843dbaa1f1c607932e23d89864cc7d1dfcb9c17494513b6168770d92d9c00. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:54:12Z), 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/RUAGT2450504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3badd616533162c342503cf221ef0196a7f45a292f57ac947295b8598e880d0e. 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/RUAH62421818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9656d212f1a8ef6fd450cbfb1d795f12f485c4866544cf827e774b37515166b8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:55:17Z), 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/RUAGT2505692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69347950faaf4930bb03e80fe783b6f47c58e7a44f29363c9a19756835b22006. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUAGT2505694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eae461bb9b8eb32236d5bb1622f445e243b0d8cf5334814ff2681ff418c9a5. 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/RUAGT2505695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456aeebfbba6a4b552e9327a6839d62866f1710ad55911a05e07e17897e8c73. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUAGT2505696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0adcba5233e6f9bc411daa05194cb8c2e0a19f9de85443ced9cd362e52d5c9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/RUAGT2505697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e7b32d07bc91b3f97ba90f577ee3777eedd443484ee1160ef3b56abdc038f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUAGT2505698.