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 0x0948ffe5ca1402375eae6d3aa5fee0674c7765a41d4ce6bf1a098bf18dc61e43. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6186552a-14bf-49ae-ad98-245f28455c6b.json and https://artists.proofprofile.net/proofs/artist/6186552a-14bf-49ae-ad98-245f28455c6b.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 0x9a4e3338fe8abdae3f1f5054f8fe7cba4a2f90dd5b931336a39f4d276f933335. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM3DF2277261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e59f4c1a30b768acc1f51619e6e816381390ba3b147086d4ab3e50533da6f4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM3DF2277264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edf18358e3edffda88c0522b702a1e4ffb47c8b6c7b119fe902639e1c6c2385. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM3DF2277265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb087a2891e93d0a1c21a4fed5d27936e81ed4d601f8784df85f654a774c7ef88. 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/QM3DF2277266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8eb3220b941ad5d0756779e9225589e1bffb4f1a17ded3364a503d53c09c9. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM3DF2277268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95325897f6336a60e3ec227e7ae0331e8f6f49b850b0f884a268dd1818b576c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM3DF2294881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac46956bcb2c6cb5cddd6e8f850b5edeb0795faaad94afcf2ef9fe4c1bca469. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QM3DF2294889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585966ab7dddea1daf875a1521d93330ef14abee2f77371ac5f4c837c174caa3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMANG2227153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196442535503d289c95208e30bc74bfbcd0427fa9121b0386d04aff5594abd23. 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/QMANG2227154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c932a4bda57be808c818899ef4f60b110c9395ed207d99cb2866e497b69f11f. 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/QMANG2227155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d564ec99363440ba476c47c9877c365a4d2baafb65c1d04a75b5b3a3828db. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QMANG2227157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc2b84110a8876ddf780bce742cb122dd31474930617734e78c6815a58b610. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMANG2227158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4899b12412e3deb38e6502cf289a421e6f49270d1af658f02d87c36469dee264. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US3DF2405482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa651d7c73ad52af8f5937ed66880bbdacdb37ea148781ca73461c9ad329e50d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/US3DF2526732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fed761c0d69ef7df92a0a27e7c058747261371c97fa89576576a2196aef8b3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:20Z), 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/US3DF2526741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adb905b7afa7988720c733329f75da2abfd5f2be382b2a89cc7f48750d141aa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USANG2521232.