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 0x87ce66a2be98ee1e8339b632c884d937ca6450e87b145fe52862289a2c08f4a3. 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/bad47e35-91d5-4983-a83f-327b3c3dac42.json and https://artists.proofprofile.net/proofs/artist/bad47e35-91d5-4983-a83f-327b3c3dac42.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 0xc2d7e5bd9b31d360e26a7c09d2101253140be3ae973a6f6cf1f283f6bd072241. 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/SEYOK1212874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d2a3dd74aa1d2a82cbe0d8d8de4081aae0e17a61eb5eca7dbd445f61742300. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SEYOK1212876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb98dc7b3646286eafa8f35521ac459a14e73fdf66a79ca3e4a5893de98577d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SEYOK1212879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e256124192fa39175a59674ff61d84fd2b77f35c85856ec8321db25670ec55. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:42Z), 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/SEYOK1212882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5ac59a69922450b74962b72670cef092f309a69d39504de36e5b843bfebe2a. 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/SEYOK1212883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91879cf69a63654ad6d83378259bdcf6fca153af9f006e7eb4b0bfa25e66849d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/SEYOK1300988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa360ae87388cb380aece1d90a240373afa55dd54b2a2c6b686fce272dae44cb. 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/SEYOK1305738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c80d125c9b38774276d3e42a1cf7c5568a6887907ac6203980355ffd6a637f5. 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/SEYOK1305739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760cbbcaf6ea945d4566e7dcb9593461165193843fbc420c2f855c04211cda51. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/SEYOK1305740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3038b557e4628de1db4dd1f81aa2c61ca1479861a220ffc74e74d0327e5767. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SEYOK1305743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb527ed50519d9c0d563eedc0e085282ff9481ff00bb0ceb7ef54d1ec7dcf42c6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEYOK1305744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333832ff91e980fa96883db7b7e0de5ea5ebf489bb3348710b2bff3f060565f4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEYOK1311240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cebb2d0f794d7081dcf84d2b7712a5c95a981d87bc2324017481808a0c5e8. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/SEYOK1311245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ac308bccdae53de57ee8b985c701c982045cbda1db5d4381fce9f8be7427e. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/SEYOK1311255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd602247f67a7fbda4b8e945872b8ee41dd189046c19a080b21bbfe8255c099. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SEYOK1418727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964cb999988200847fdf8fab7cf0c25b3e9001aaa8232f373ac3ab52f03f01f. 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/SEYOK1853716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873de8010718b092d62e8c3667c2c8dffa7f597a581d8410a34fa9ee185aef8a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SEYOK2039514.