thumb|The farewell aria of Sultan Bajazet in Handel's opera Tamerlano (note the da capo instruction). First edition, London, 1719. In music, an aria (, ; : , ; arias in common usage; diminutive form:
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 0x633296e2fee35334e8705ab7ae05ec2a2054b642014c2787acbc719bf80754f9. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3201847-7091-4b51-af71-8e829d6f90ce.json and https://artists.proofprofile.net/proofs/artist/f3201847-7091-4b51-af71-8e829d6f90ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Miss Luxury feat. MACCHO, GIPPER, KOZ, HI-D, Foxxi misQ ～P.V. Version～
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 0x5a822f2870a99a43dd2a0d73763db52982ed14b4cd759e10a84c181e1eab80b0. 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/JPVI00814770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9897ba175a1122643318f59b69710c36a07befa8bae33d4874241df8b835b42. 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/JPVI00915870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d136ddd5ae78203bc0a58abbc5abd8286a9c862d4b6d433378983a66df6c4dc. 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/JPVI00938520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0bd30f7398c5bd103ae3f79cd1522b67f6ffa04a34b65b53f6cb1a34f1d0ce. 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/JPVI00911980.
My Angel feat. Kayzabro, GAYA-K, BIG RON, 詩音
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fc997f85df790c268cd9f7776565175518d0b804f3d5e70b951663ef97bf4d. 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/JPVI00833480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c05a1c93dbef837673ffb2a5d8555c44f59bcf01cd2daba571c1a30282519db. 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/JPX600900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67ff69523434d04ee7ba7b3fc0eb06508cee4a1e292c5e135e3d564f02772ac. 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/JPX600900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fed221d15e0646f1fca0c8372d5e4e388179e650f41487dfeca7df20322d8c. 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/JPVI00825490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31576f8cd1e01a3ff75e04b6583fa9bef050179975631090c80928c5acb3c9a5. 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/JPVI00825550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c517baab6a288a51f82e316e81b6421ffb407f51604757a068b21f8e9d8066. 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/JPZ920705283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b9e1820773a6ae4cc1499df5ae792ef7e21036b7c37c2bfee077a9d9322061. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPZ920705288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e3d910ff9895c8e7a4eeeb095e04d7ddcaaa35231f0d170282778db951df43. 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/JPZ920705290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed63b2cee7bc94b22c504b4a8ff3b5c50fc068244907cf2dd09ddff99b7e2c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00946020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac151474271a879a4362e741a412a944db62acc4ce599e6216d5021819bd11a6. 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/JPVI00946610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d923d9535d99b7c39e06e9e72c6861fc5644d731fa3fe7eeb3f7d988ae9bcf4. 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/JPVI00946620.