Sax or SAX may refer to: Saxophone (or sax), a family of woodwind instruments People Adolphe Sax, inventor of the saxophone Oett M. Mallard (1915–1986), also known as Sax Mallard, Chicago-based j
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 0xf8ba40287002a64aeb7906f09b5966391657d1fcd3ca35ad3ffb74f23f503b9e. 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/433832af-3ad6-4306-8e36-a9e4362dcba4.json and https://artists.proofprofile.net/proofs/artist/433832af-3ad6-4306-8e36-a9e4362dcba4.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 0x5735d13dc3dfbd6a21370b522ce8a04acc9bbfd20e0e8305057b6102ce7cbfba. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USMKQ1800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5c1161aac57358315485385d5efed04be37c543a1227d4dfc116d2171dd7a. 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/ZAA642100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99a2a9c2d235f3b68396c0de769a2f2f6ad2efe2bce0f104a2997d97e2635b2. 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/ZAA642100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed91698fc44906e4809be3c0555ed6d47849fc12bc23b193492bfaed84f8924. 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/ZAA642100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1277e08db1d7121c6e336afc6ee009b9bc6f65bdaa7d939ead28a42acba3ed8. 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/ZAA642100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeed12c7dc183b57b560338c321ec6e40264c56c85f8630ffef9ebb83b25eac8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DELM40600320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeed12c7dc183b57b560338c321ec6e40264c56c85f8630ffef9ebb83b25eac8. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DELM40600320.
Don't Turn Your Back On Me - feat. Elan - Deep House Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de50c45e2f540ee5f48143f2af4213376744db8d0dd278ded3d743eba5df32e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USLZ41010156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb82ed7240a6ff4fdd4e40849b993e6c7d0bc72f6724d725a88bd55e36728b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZFZ22550708.