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 0x6a00b1d17a5028dbc92e29e5f8eacfc4b3b56084108995312909ad7a038dcb7c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72bca69a-e675-4d37-86e6-0486580acecd.json and https://artists.proofprofile.net/proofs/artist/72bca69a-e675-4d37-86e6-0486580acecd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
PASTO, PASTILLAS Y BOTELLAS VS PALI2 (AfterMix)
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 0xb35306a0338e9d8c6d79fcaefe39d159a606fcb805b8f985164b39a4827bc603. 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/ARIXB2401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35306a0338e9d8c6d79fcaefe39d159a606fcb805b8f985164b39a4827bc603. 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/ARIXB2401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739e5382c042334c740fcddf843830c71e2d1840341a690c28328d04712605bb. 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/ARIXB2402452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9118329b117b073cae8d264a660644309cf82e388224c4709e206a35cb128f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARIXB2402230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4391753449752466ac4521071bfc2b1caaf785d435449c603432b0617eed9678. 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/ARIXB2402453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168bd48ea9b8bcdf79027f933265a36e84791b998f9aa8b29c252512c03dd9ff. 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/ARIXB2402454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dab099acdbb7242546add4e0fcd0c6739eb2980a0fffe67d4632352c490a37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARIXB2402455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c65a4647ae51701db3c955884398bd08462ee35cb3ac5510ed1f91c2509570. 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/ARIXB2402456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75878dff267e544116039e64382792b234dedeaa201aeeea0d7a865852c49525. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARIXB2402457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac0ee1851900714df77e96ff8b6d926e90930f3fc347bb3328c5b8a84fb20d. 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/ARIXB2402458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9118329b117b073cae8d264a660644309cf82e388224c4709e206a35cb128f2. 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/ARIXB2402230.