Apulu (), also syncopated as Aplu (), is an epithet of the Etruscan fire god Śuri as chthonic sky god, roughly equivalent to the Greco-Roman god Apollo. Their names are associated on Pyrgi inscript
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 0xdeeef3b724d6de2b8ca847f7fff818242e2491258d3d55f10109ef3c2c473a61. 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/0ca8550c-8cc8-4901-930f-2f1c7e6bf320.json and https://artists.proofprofile.net/proofs/artist/0ca8550c-8cc8-4901-930f-2f1c7e6bf320.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 0x24cb5f1e33d94b367061141700b704c782452d4500c286605566b054e4f8a86f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES71839607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180986adc6ef874e9fbd08d651954e79ab7aeb51e62deb2425073c904ab02a87. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:18Z), 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/QZES71839608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf297e6cc1afb062f870e1be495736837d95106beffbdd79890cad50fcf5996e2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA81916510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a2d2269f3e918649816a9ea809653bebc210b0a3660aff04d3debcc3a48a43. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZFYW1946870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea985ddf593f741187148d3066abd7f08da0fb043ccb4111db726715d73e34be. 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/QZFYW1946871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960c407b2dfa4b75568dc3a49d8fd875e12da7f6d6bdd2e884dccb9fb2fdc6dd. 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/QZFZ61993698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9b218c0f3057317d5866f33a4144e6ff40182e5a507d0cc54a7db85ad156f. 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/QZFZ71983360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01579c6482ec8c82d77b4eb5d6919306168f2ea7784c33d3a2ac04a3202a9946. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZFYZ2042493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb95a62bbf5d805fd02597647aaa4c2bece5355c840f33192b7c1e03be643c4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ62085433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc74412d3ea5c68c67353193bf9bb107b1db63073904946f25a0de65c98267. 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/QZHN32059660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa593b77fa63113b06378266dc0c8cda31cde01939c065c355b859b90e752c22c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA62161247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf51c256fd99146dab02acea88e969d1dd0d394f7e21fb3449c999d80f58b50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72292324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85768ecf570cc4889ac1f7f6aed1757e94bd4a5d82fc90056af316341ff8cd5b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72292326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08b3df8f4c19bfcb40604097a453f0bde8f1d50a682adcf42deca101457055e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA72292328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11a46a586c63ce6115156b86210c52bd193fcc629a8b89a7e5db6eac6708500. 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/QZPLS2261002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699d98b4ad9d3b1d2ee3d83499ce60cc9f946231e2133bf707d5afc4baec4c5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLS2261003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b22ed4dc4a6c5cabb722bf2298df8362751e02c6b666d71c07292dd9af054d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFYY2388027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fee1fb0600a08a111c10fec0674bd2eec4ef0d17ab9aaa11b60b6681e56c295. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZFYY2388028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fcede47525ad9063c38bc92a59a797332252a155b6a541b3ff7779842d7372. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYY2388029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda0973fd9d8f7bb651054086d3bef019790a1f45fb22e3054aa34a3295218b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWT2373774.