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 0x18a02949eedda2069e5218a6ea8385b042997a241916b8c33a9a312589e9e76e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69c61011-fc60-4daa-a04a-d0aefc2f37fa.json and https://artists.proofprofile.net/proofs/artist/69c61011-fc60-4daa-a04a-d0aefc2f37fa.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 0x9f1161d68939f1df70849422869ee258c1587efa60f75f549149aed2ef010769. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR9W11826874.
Love Is The Answer (Shri Ram Jai Ram Jai Ram)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a74fc68cc704984342c0e1580dd820331deb8341a27dc71ae8d6771cef042c9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:59Z), 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/FR9W11826869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cf5c4c94471291bc2dd73f759b78d884ae7fd11242c2f84a3f93bcfbc4b1b6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR9W11826877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5370e20ab59d39da10cfb3929bb03e94564b72dd7f4429d6d66c2a26695e068b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR9W11826879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09489adc0ce3b9c5414ac4da26a954a992044e91e9e6990c0bc2349c81829688. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W11826876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219e05f167bf76178458e4aa6cdc748971d1c77e4ea55b1d350c4098c70d8ede. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR9W11826871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc46d903b2f3b2af8293b7e6ee4d81d5c6341a305413e89670346da345e1893. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR9W11826872.
Raudhah (Dalam Kerinduan) feat. Jeff A to Z