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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2156ea783050efd48052b56da257617a9c23bc99e6477d2b71c4fd0bd0f96. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/405735be-8a32-481c-b2d2-74a1aaf7b182.json and https://artists.proofprofile.net/proofs/artist/405735be-8a32-481c-b2d2-74a1aaf7b182.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e986dd260a20c1955393d61b47844e1300280242d533612d317f798d027eab. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMPKX1701564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09520d90ba3def857668b41658bf4bca035ef050b164df007f4b663f6bdf50a9. 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/IENTP1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded182219269d5706a9a2ac23f84edec7b959cf5787dffb3d5807624a0d50da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZARB1884553.
I Don't Do Drugs, I Just Sweat a Lot (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fcae3352ac0053e678ae947c7dd4c7fd893fb5fe49d8cd7a386e1f2826714c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IENTP1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf190e4a788a258e925b82afee63ccc527c33014b5adedaeb3f7246617b734088. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/IENTP2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca799d3d4c69a1ba31d6ea3ae2a98e0c2acfba3b8c4c78039519359c32ae782. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/IENTP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7334a4548c0818382e3ad2457f9b037d9a1817a7d1a0268f5ba10975377d3abd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/IENTP2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceaf765eb7f0930f6a2484fe0d7ddc1817b98c1dd8d9049b045d6f4466fe5e0. 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/IENTP2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc169c5d4b08b1ec1307693b91a337cf7fca4bc5add8a14b23a547febb5761fbf. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/IENTP2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d455ee2a9c88c449457a3f68e4aa6e7ae6af5a29588afac8039426bc9f65e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/IENTP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d391ef96994558c116f1be390e9ac1c78858f64697f53092fec5bf564233a57. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IENTP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210041b0c491b9565d34b104da944a01bf46fc52707a08c30bbc19a814a39790. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IENTP2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a8b2a4cb1a6187bfc39ae69851b99475b68e155ded214dbcbb3d855cfb35c7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IENTP2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877d64e60251a1c8934d3f5f37884144c2d8736d6bb6ea77cd92d8eb4ddd4832. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IENTP2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2263ac4b9029ac798ab7425f73b4c6ba0219806a9f196f72252f33c1abe3dc08. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/IENTP2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f6a9f72cbc54a43964a2f4e12596792335c621e897550483c3b34fd69117a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/IENTP2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09590e2cc1973f6e9277c59b9215054dc34cb3677260c4e2c53106249be756e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IENTP2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dde23574651de2fd43ba7ae37479e900bbc0354a4d4ea0e21eb3ca92dcc543. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/IENTP2400013.