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 0xc1c2162c34450d723ab9018a54a25661f662f93d719aa8e19a0867f1d2ef5b9f. 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/6ad45530-3dfd-45fd-ba13-25e36a092aa4.json and https://artists.proofprofile.net/proofs/artist/6ad45530-3dfd-45fd-ba13-25e36a092aa4.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 0x7ec65613a74ceef8facf50f49d2e5a56058343a90bbba29878e735442a88d046. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBKPL2006996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deab7ac4193bfb17591be570bdc6d9932c63cc921ddedc1f1eabafbf0afd9bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2116093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c214773a7662e3b378064b61a855df21290d328c96da1dd4cc72f0b6895babe. 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/US3DF2116094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deab7ac4193bfb17591be570bdc6d9932c63cc921ddedc1f1eabafbf0afd9bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2116093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffc4dd1588c67d7170a15edbb42f7b3efdd17c5e46f0c8bbf67a37fc2352df6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2116076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4627eb09e40326831a96aadccc055f3ef42681f67d710d4497739694b69d9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF2116084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c214773a7662e3b378064b61a855df21290d328c96da1dd4cc72f0b6895babe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2116094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b4afa468760060382cb0b432a3b743916cba47acd5605deeaf216d592d54d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2116087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c6cf7a135a349e149d9905066f5934bff45080730d9fcb88a27432afd48b68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2116089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93df0252bd34389ccf22a8f853a412d1263343cb6b1bcd6cd97f3c66df81ce45. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2116090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b6ccab9fea031b923d659f97186f6d0a3a46c06a2425414ff0c0f0a541801. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2116091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09aad82dd75ef49579a52a76d78a10f700c4e60275a57eaa657443e8c02e2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2116092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4217688fd24bba28e3b182b7fcc9da9b5a66b90e4ad0a20ac1f5c4816ddb86e1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2218043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb65f4f2863f4836e9ca5ba07f65364cb2e8db2c3be5c83e107b534b97918a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USANG2284365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac7c39013d08301ab43c9213b7917921782de1a21e9889ce963d19a90ae584f. 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/USANG2294945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68cfea6362c0dda9e74171cafb3b59a88aeb6ec108a75d7ee0c9474eb85e3d3. 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/FR9Z62300476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd1d2ffd60faf5176b7bd0669d5a89e9b62622a54fd9989d5c8ce5e4af62bb2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:40Z), 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/QMANG2206950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b336cdef94214ecc6f14a4d60e519b697a2fa7a86cc0a8c976f9dfbd0f1cf94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2098949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35d4e2bd613559c37019f80167245aa2b23d40a6e653cdd27f07285414337a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2170119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bc51cbd84b9349fdeaf0dcc1fd9f76478a1e043f04eaa7275655f141dcaf6e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1556528.