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 0xee27ce6d0b08f9bf92e1f19d52b1a920895f2eb996797847a657ce6b43f81e4c. 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/03fc9df8-e759-496b-9d8f-3d067b07a9e6.json and https://artists.proofprofile.net/proofs/artist/03fc9df8-e759-496b-9d8f-3d067b07a9e6.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 0xfdeac17375086176b2efebec9ab3efebf3a536e060590cdccd9a5367b9a4f24c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZHZ41901467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c59795c4920fe3f6225876e9c4c3fdb5fe0a48676edcec1d14bb969a25ba65. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHZ62052340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302294bed1d7e081f3c271057303ce31f76ba8e6b20711bc315e19855fd8c84d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ5AB2172565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd8eb12175168521f2e9eb7df3ec9b261b2eec8be8098c71d95939f7e72acc. 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/BCV9S2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5839d6e6778be0ba02c6e98a102a0a308678674b1b364aa332bf03c2163aece. 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/BCV9S2200009.
Precioso Sangue / Alvo Mais Que a Neve - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070d445cb94d97756e9f02f26283b665e4633ae40a72b4796931d0c7109a56da. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/BCV9S2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1056049f524b6275b0453ac1a1c9591fb300bbfb80c3b2e935fcb124e603dcf. 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/BCV9S2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce8174b9f18b050b4dceb4267e7ceed88c2802de4b8475592217196e2733d73. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BCV9S2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e04de5cd8a0569c060f77d72126ce5697fa340f0e41186bc97f2e2eb284cee6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BCV9S2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02c9e4743254cc465cd574426825e1dfaea9e964f6367b12305640c6af1b36d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:07:42Z), 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/BCV9S2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f9e03e6ff9c54ca9bff3d6d64d70dac775bdfb588ae446e569c0c081b62ba. 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/BCV9S2500026.