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 0xad739dbf2ac6d88d516166872a5e10b814be7d6c9bc6dc94020bc4c6a6b70b18. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9854a27b-81fa-4e3b-af65-c4798738ae22.json and https://artists.proofprofile.net/proofs/artist/9854a27b-81fa-4e3b-af65-c4798738ae22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Puccini: Turandot, Act 1: "Fermo! che fai? T'arresta!" (Coro, Calaf, Pong, Pang, Ping)
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 0x12ba28587b8c9cdbb59923b05a5e5d3d4ccbc8de17bac91de18c6953ded43002. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC8800904.
Puccini: Turandot, Act 1: "Guardalo, Pong!" (Coro, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe73428034e7bb5929a8747ad159b4707a289a18eb512f4098d5b064c44a3a25. 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/GBAYC8800906.
Puccini: Turandot, Act 1: "Non indugiare!" (Coro, Pong, Pang, Ping, Calaf, Timur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fd7200b6c1aadde9254bf045e50317be6b9b9d14e6bcb9d08b4df13d457acf. 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/GBAYC8800907.
Puccini: Turandot, Act 1: "Ah! per l'ultima volta!" (Timur, Liù, Coro, Calaf, Ping)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03463dd23903337a8ff2f96d9217016f2a35d778607173087d4f7ff817cd0965. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC8800910.
Puccini: Turandot, Act 2: "Olà, Pang! Olà, Pong!" (Ping, Pong, Pang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf4d31b19404c9c13aee6d33bf2c246d05b81e3467c6df7235285c5b3f78752. 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/GBAYC8800913.
Puccini: Turandot, Act 1: "Silenzio, ola!" (Le ancelle di Turandot, Coro, Calaf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e1d3f9046e774c35522732b6c5a2bbbe1a19db03bdd20c43c48f6dd85110c8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC8800905.
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
Puccini: Turandot, Act 2: "O Cina, o Cina" (Ping, Coro, Pong, Pang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3d70421d260e533fa05c738a9ce26e0f720835391776b6d7d87722a3caeb70. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBAYC8800914.
Puccini: Turandot, Act 2: "Ho una casa nell’Honan" (Ping, Pong, Pang, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097e9fcd733449f46084d950f4dedbb73d24320e6dc517cf704093f82058735d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBAYC8800915.
Puccini: Turandot, Act 2: "O mondo, pieno di pazzi innamorati!" (Coro, Ping, Pong, Pang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84639ed22828f9b047802a64fe831e32a00e568f6b34d100e7468fd22d2ad90e. 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/GBAYC8800916.