In particle physics, a pion (, ) or pi meson, denoted with the Greek letter pi (), is any of three subatomic particles: , , and . Each pion consists of a quark and an antiquark and is therefore a meso
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 0x808eb83f4ef56993057a6178e3793e0e76c5e193b8abc3cb1164cb9631486392. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49c464b3-0479-4dcf-88b0-f62b10c4a8c5.json and https://artists.proofprofile.net/proofs/artist/49c464b3-0479-4dcf-88b0-f62b10c4a8c5.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 0xbf9df7b4dd2bfb9e3471a6f6fc7698e0d9b978eb0907ebb777efb9ce80a2c37e. 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/US83Z1338343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed08a63d7e04d61ab3d656172114c16db0497b2cb58cb81030c364cd9d61e25. 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/US83Z1338347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851ee969dc44b69d633524735c47fe29fd1c0b986c370b6a22c3dbd69d193c05. 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/US83Z1338344.
We Are Planet Perfecto, Vol. 1 (Mixed By Paul Oakenfold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254a6e9848b59345315e1d543a83faa2af2a55e571128bbf36858468594ee314. 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/NLF711104039.
We Are Planet Perfecto, Vol. 1 (Unmixed) [Selected By Paul Oakenfold]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274cdae85ed9b3e0b5ddc3b6c36d3b41a1d25e8119f5100430c9ae506d433a7. 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/NLF711103996.
Not Over Yet - Max Graham vs Protoculture Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd32ffb922c372dbb99430463d9233ad71d487689b5a34cee37d69dd866e2e91. 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/NLF711102656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab24f966a53f8c7d18c62a43786454d3c7bbd912b547fda474abefe89901023e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLF711103645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eee6881592a5cad018749722acc784646ffcc0e5ac30f8af494fb9ae750e6a. 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/GBKQU1200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af6e1fb7011c237ab4aa77294b570e290caa2ccfa3c9503c20bf8f0d01360a5. 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/GB49K1200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975a306b6e7657651d9ff50d47f2c5ad36662ce2282979b2247f2088a7ebce98. 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/US9C21200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3787231dc4d6e98fb3c2883e23b666ac0b100251f7c3a545aa76e25c502f2fb. 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/GBKQU2047031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22df1612607826913d1509ca0ad2e1018d644944c95ee4f444dbe84d64a113ab. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBKQU1143984.
AMH Looking for the Summer Compliation + Mix (Mixed by Pacco & Rudy B)
Already Mixed Vol.4 (Compiled & Mixed Krummstoff)