PAIX, the Palo Alto Internet eXchange, was a neutral Internet exchange point. PAIX began operations in 1996 as the Palo Alto Internet Exchange in Palo Alto, California, and was owned and operated by
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 0xc2dac247cfedd7e8462eead3b8c486ce98fd859b3a55d9de8300e73b3dbe9d37. 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/2a0ead5a-1710-475b-8705-5a1cf9f3f068.json and https://artists.proofprofile.net/proofs/artist/2a0ead5a-1710-475b-8705-5a1cf9f3f068.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 0x66599a6a2f0538c80621da3e3612626aadaca21ece708720ec2d543c7c6332e7. 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/DEUM72208089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3960ddc659c7c32420615ac8404df2ec86339d511a43cea14902ff4460b6d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEUM72410253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010546964a011edb2012935df0527538ddaf49092ed048a4cccfc67c5ec869b. 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/DEUM72408696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674f59488be987216ceb0163b7cc0177abc8d05224d88c43df32b3bc198a436. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEUM72410501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f620d54881d99796f12611c0b0582586bf35d3af167d74dd4db85305a2ac6b. 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/DEUM72410502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425dc624a813b47e26e9c62dc41dccde74449c7445d3c54450d28c6c35d6d746. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEUM72310590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3960ddc659c7c32420615ac8404df2ec86339d511a43cea14902ff4460b6d4. 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/DEUM72410253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6766d45d3476edbb9445eac00488c92a385e1cf63cfb3cf093ae502b1b2617ab. 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/DEUM72410504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7c387674e1df64d46327722e155b2e634117c7f21c3fe96168878ed6ed05b. 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/DEUM72410512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a1033d8b7b3f8072a4fcc2c9a9cae2f201272d7849eb48803825d642a04ce3. 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/DEUM72410508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286b54d38d583033b19c0d2d1ec26a1a2f0dc9132beba042ce16cb41c2a31fc1. 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/DEUM72410510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a1343ef94535c861d25d085d8ce2e1d59c424f7e1611a569fe6c96fece4c8. 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/DEUM72410503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d7bba0f12f635b26de5ba845edc445f90ee22b3a301c884661a5afd442bbbf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUM72312349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d51a66107c5ae765bbc21bfd71002ca2bddd6f20b4599bb84021120f80b33f. 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/DEUM72410509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66599a6a2f0538c80621da3e3612626aadaca21ece708720ec2d543c7c6332e7. 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/DEUM72208089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d7bba0f12f635b26de5ba845edc445f90ee22b3a301c884661a5afd442bbbf. 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/DEUM72312349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425dc624a813b47e26e9c62dc41dccde74449c7445d3c54450d28c6c35d6d746. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEUM72310590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66599a6a2f0538c80621da3e3612626aadaca21ece708720ec2d543c7c6332e7. 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/DEUM72208089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5966cd5327b260a531b58d2034d262ea671454e06ddaf9c2cea3c383996e4aff. 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/DECE72300593.