Pissi may refer to several settlements in Burkina Faso: Pissi, Kombissiri, a village in Kombissiri Department, Bazèga Province Pissi, Saponé, a village in Saponé Department, Bazèga Province Pissi, B
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 0x08727361c2081219abe5f20f08cb7701f8d42a95b2ff299cc60691dccea491a5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/902e4bcb-da3d-417f-96ac-f0768f6b5b57.json and https://artists.proofprofile.net/proofs/artist/902e4bcb-da3d-417f-96ac-f0768f6b5b57.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 0xbd17e8ce905681e04bd71b9f9ddd0f77ec68c81c62c1e8a3af8c0875558d449b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBKQU2266867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b681c153f54151c4c2dcf48fd8a62c2534cb6398592ac7096f972d1790c4e6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBLV62217799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf5722f0563a2093077ed60779bbcabefd05b553e842eff57fb277423c952ec. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:38Z), 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/GBKQU2347893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e613c1a9c2b49b202592606279daf4f660f6d558e8edc35e331e019a43a5a0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2375440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d0b0678ceeb890d6e9d40b002742547db6d5d46d035ca6b574e0a18b63e4c0. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/UKLVE2401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763a9179ea6e11487a77d2b1c50a1aa4261b0d484116c439bb0ede05eb02e2ec. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ITYEB2300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbc13da7b446827d703cbac89074f336fdc0f53b85c03e5f51c952a18d622dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBKQU2414332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37b825bf8da78b0e7fda8c85fe0b66d6884d4ed4e83c17d09e42e27e7f3afa0. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GBKQU2463491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe408e18f4773a8d6bec49af2686df61bceb441ea06fb6577d06aab73505f3385. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRPA12400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb976968e2f0b30d442ff267d875182b4d96d5b015882b741373b490d2e1479f6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLV62410763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cd38cd5d552d0042e3cdc73fc421e26b02a4aac97b9d4370ffc4fe341ee61f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:49Z), 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/GBKQU2502956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f69b8f5a6dfa8fce8ac16aaf0ff5a76998ddc7596be194e593b5a0f7fed873d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITYEB2500746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ef02b54aa9daa6d6e08f650cae9bf394bfa59781b267470636215f2a9f16a1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBKQU2582996.