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 0xc6cd9ee7d5f1d5f62858ea4d9286065c42328771069d690cf2424ea8fa07a2d4. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6cbefaf-95d0-4d55-81b2-a89261ceb149.json and https://artists.proofprofile.net/proofs/artist/d6cbefaf-95d0-4d55-81b2-a89261ceb149.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 0x14abe6d9814746c2fd75cb5c7e9e9fb6e8bd16d25bcc71729451322fa1641e0b. 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/DEBZ72000374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf7336f8d5be79a3c05ff5dea37bfe05e54e32831b448c69dad011342362ce9. 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/DEBZ72000382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6be822ef646f6f68443937ddb878498b89983adfb7d14b2051df368598f839. 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/DEBZ72000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ec272f4f41b850c1f356988a713d99f1da3636d27869d1cfb5c41985d842b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEBZ72000383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb84208d2dc0a779b965d0d9de22a41b341c0875725b243644e2addcb9d3cb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEBZ72000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d13a35c57c9879628f49d195d14ba2efdeb0a7c78f5a066d4213e4f85a196a. 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/DEBZ72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3ef45850f9d388278562401543e827dfba19e2728f7891cdce40c636350ac7. 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/DEBZ72000375.
Arrive Somewhere - Solitary Experiments Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8198efbda8425bd57d4b9ad24e71b31a9bfb102055238e7f9c7c959c12b0a962. 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/DEBZ72000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fae3f86dc8a3cbfe7ebd4ee015eb44a9e82766aaae008b4ad17408e799436a. 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/DEBZ72000376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf56d15c3ba3557f39f3b6f165603ae6ab940694e0919b3a1da38d82cbeca53. 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/DEBZ72000377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aca33cd40430a064f42d860d00ffd50a653ca66d355a9bc38d8fdc2e772446. 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/DEBZ72000378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be40f4c99840ad5548c03d511f31fcd1421052abb977a7d5e753d6cbfebdb9e. 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/DEBZ72000389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bd55025a9d887524aef8084558fe039af2ab80e0edf78856383ff1fc4b104b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:10Z), 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/DEBZ72000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53a8384b1a7d9b9bfc244893d07d161ab94bad060730502004c7719b1ad39a. 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/DEBZ72000381.
Just Leave It - Lord of the Lost Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568553d014dbdbda3362b5e9fabd236dd313623908c58044af5aee368a7707c5. 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/DEBZ72000395.
The Silence You've Been Longing For (Frozen Plasma Remix)
The Silence You've Been Longing For (Blutengel Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb663952e1f1d49228c63a34162dc0838c5a4bd5c2678986933004f789a270. 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/USHM22472615.
Let Your Darkness Out! (Disorder Faith Remix)
Let Your Darkness Out! (Aesthetic Perfection Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c57dd49e939606de91f17e77772085a5a90452bc710730cb65b5fbde6c7da0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USCGJ2496314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b6153ea8b12fee56c28132ef95257cea3f490db6b98f4c19638c0e42f17a10. 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/USMH92369041.