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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89c4dc9b6ed942af3d43e61df0d33b669c951ac507e0560d09cf9e8cd3015a6. 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/507a3f70-9dd5-478d-b646-7f63c1883729.json and https://artists.proofprofile.net/proofs/artist/507a3f70-9dd5-478d-b646-7f63c1883729.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Madana Kama Rajan (Original Motion Picture Soundtrack)
Navamohini (Original Motion Picture Soundtrack)
Yerra Matti (Original Motion Picture Soundtrack)
Sri Devi Kaamakshi Katakshamu (Original Motion Picture Soundtrack)
HENNU KANTHEREDARE (Original Motion Picture Soundtrack)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c6a0ecd6ec78a0489f62de17cf34a49a7263272ce1ae4595bcd07e5407f1b7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ING111023699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8faa9b6b80722996d9d90d4f801f67e3c6e6290a477b7a43124b34bca9a81a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/ING111023700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b426a97f97d93cd5e829ac424324a89d73fca970535b53b973bb917f038aa. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ING111023701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d631177ba8214f04eb626ba048e1a8d0fa85a9e57548e8c80e2cc337e4d85d4. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/ING111023704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe917feb36458a5f6f871f5d93fc75d2683940920c9996f4008f65039dea63d29. 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/ING111023706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba50af0332a12ced23732e1140c55fadefbcf3abcef99961d1489cc4a0392f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USPM19001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9086e8e1777a5f50daf1d4ba1a998499afc77a9e16b0630c1616c3c97402ab7c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USPM19001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba50af0332a12ced23732e1140c55fadefbcf3abcef99961d1489cc4a0392f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USPM19001027.
Bridges: The Best of the Private Music Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9086e8e1777a5f50daf1d4ba1a998499afc77a9e16b0630c1616c3c97402ab7c. 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/USPM19001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b6f068f8209b492af01694f68afd6d8f29b379f2fb1f3e7334ede8e28f1ff2. 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/USPM19001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1b38624a42bf71cdb348a60da13780b696a4e30a7e19f58e170c20acf42d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USPM19001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc196c0eefb2562c9cec2ae76d2403964a3ecfd49ca901eb35991e42deeb2f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA090510103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8a310b270ffa176a38e65818d920f68f6450b447e48118917923338ccd8866. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INA090510106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34a793c32756ca8bcec5bbf02f02e2b0fc28f83637d596c98ceee90c9b902e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA090930050.