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 0xfe3e9f246cbbaa11faa584e233cb6bab264e8abcc6bd23cf6f8770f6a8845c36. 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/22dcb509-faeb-490e-b183-887ecf475393.json and https://artists.proofprofile.net/proofs/artist/22dcb509-faeb-490e-b183-887ecf475393.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 0x39405b262066a26f6ff59823a590c235a59eb7348b72d68ac54e27fe87e4460e. 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/QZAB31800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18839761506819e2e7e30c9a79049cb41399362660c898644432b46bb8fc8f0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZAB31800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581aa9d5c3b7ea96e64c8841f8a102d37add97b719211ec3dfd9733abc775c42. 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/QZAB31800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25155505f02556ce32fa52838a2bf96ce2fe90db665b23d16962dfa7d1860390. 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/QZAB31800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175de9722bdf10ea4856cf3a9807f9bb3599c17ba24e7d98a23efe229471c25a. 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/QZAB31800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3733305fe8064f946db394a0077c9a2d82d0fc0f3518d729d68723da6a1e6d. 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/QZAB31800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bde9548574239e6ffdb9308f67f856f6f2750d675937ef90111804cdfaf551. 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/QZAB31700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd745d4432127c63d64c57bb1770d890b970da1146b790c55d5d29056ce32a. 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/QZAB31700001.
Valley of Seven Rivers (feat. Merethe Soltvedt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1206a2ebfd75dbe77f073d7556ffb31f7d797116765b429e0c319d071040b08. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZAB32100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdf363a95b84968eb8d85500e5bec1beda44a147bc9a74b91f830c785d40c2. 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/QZAB32100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf827d69c80f3a873fa8cc35de38bc0395acc8a9bc0e47e3d22d326736041b9a1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZAB32100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79d347cac062aca1535e7def8f0ac35a92ad9a6232b44b39c19d0868aa5997b. 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/QZAB32100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5fd33dd22401fa27fdc7935915c7bf2d3dc2abfdabd7b2e507899b787fcb4. 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/QZAB32100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511f0ee230e8f350a0590b5c36b0b66426b77a6d302e0a45c1773e641362e55b. 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/QZAB32100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa985fd60a14c85bfefa49e95012756e91baa19fff2ca903feabf463f52e9a823. 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/GX3Q92594641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38822d3e0a2367382a446c787b68bdf5df466d54c53dd7990acbb92bce6f751d. 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/GX3Q92594642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb91ebc71b481479e265ce71121c1c007a616ba664f837d2fe4e254314377cae. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GX3Q92594643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8f2ba753d126c59ee8a8979cb61647153964c20c84df0058d5e193004ccf5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GX3Q92594644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215aff625905b81f133ee06294e1b7bd69463addff16c49b99467fa014aeb59e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92594340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ae15f9911f1a0d12a939c758dc6d3665eed75e6d786c1484fdadf7946220c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92594341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e097162c47a55ab100797c8930116860fb3fac5181ade8ca2faadf48035314. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92594342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd23859dd4e5a98a4eacf8ef0e6bdd8bf13718481110121ffb7b1bd2f96fcdef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92594343.