1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x758435ae8f33c11d85b36c0b36689c21750ce5fe088b2cefae3e8ade24d2e372. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5db338de-d4cf-4e5d-a414-0c0585db2c98.json and https://artists.proofprofile.net/proofs/artist/5db338de-d4cf-4e5d-a414-0c0585db2c98.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 → block OTSBitcoinBlock must exist at that height 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 0xe7666a8c21e1b0a46fc1bcf4809846ad5a4f50876b31c1fd0c838cbb8e22029c. 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/QMEU31924961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4bcc1fcc3939ba323a1ff020cf13195f0056ba3f51ab4789428494dee1d926. 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/BXHBP1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d30c4b892706c5b0f58b08dd47c416657f2b32ab977c24f93a7783bba8dfd25. 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/BXJLW1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34701fd7afc8ed308c9ce2bdc0eefc686039df59ba34770a682fc5c3a18607b8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BX2LP1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d32e3cf6ad72b07e17f1dcbdfa80e642ec9069ff05d4ed8e157de7d5a31117. 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/BX0BA1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c62a87c0466be8464a0608b9beda653a03db6cd0fcb94c77109630f78c89e. 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/BXHBP1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420eb1b58d2b3ea82c20597b476733cfa59e3af400343ab024b5b839675ea924. 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/BRSME1801941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df1f4e1844f93318ff440ef2574d8f1334fa0f510b41795843ebbf2eeece8d4. 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/BXHBP1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379783c8d0ef404170f665fbb1fb2fc1e6e0c9415ef1aa6d43719be109d4af4. 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/BX0BA1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3826f3f3d544b5168d4c39a5a85217cc4e2ceb4aa46001b5e1d60bcfecbbed. 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/BXHBP1900367.
Oi (feat. Lagum) - KVSH & LOthief Rework