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 0x62cb7e6272039f71c28fd0a87ae52182d6da25e16a8489e2393cc40fb3d87865. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f2f0d53-acf6-4d1f-b094-ccb1f46b3b7d.json and https://artists.proofprofile.net/proofs/artist/0f2f0d53-acf6-4d1f-b094-ccb1f46b3b7d.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 0xc6de88383b1a4b0a9b91f9b930e0ae2fe97dd9419e177efc850e19047b06e470. 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/QZNJW2462692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a27789c3785104a30a378ffdb92f70627c4daf9cdf173dfad034ef284477e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:26Z), 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/QZNJW2462683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd022cd09e1e0a793368c16868143ed9af291cd6cddccd4a5a0434abbef5191. 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/QZNJW2471651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1a853bccbb19567b7c5ae3f01a3913f2769d38d83702e2a36f08e523491177. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZNJW2471652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638995ef3e640e350e70e745618e1f2bc29d219a7b67958fe994a97679b87ba8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJW2471658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1088bb1fac301b8143a97acc0c91c8a25d438da91958705e6b77d5873dbac1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJW2471659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa167149e4403c949b3c794dac545d51faa13b6f3a7a6e084950f1efff951dd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:20Z), 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/QZNJW2471660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d04cc597a70473fb2e1d5d4e055a507f320feca9b1b2a60ae0b9a6272c0443. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:17Z), 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/QZNJW2471661.
Coração de mármore - Victor Martinez e Mikael Santos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc7dac4981d5381283294f675afe14a8c1f6bfb89a6218cd3cc843a78f627c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USANG2479855.