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 0xb2cd88b79497448eb7af8092d7258bacaad429ec3db3016cb7f12530ea155498. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e38ea4f-2cdb-4a4f-a00b-21907e240896.json and https://artists.proofprofile.net/proofs/artist/8e38ea4f-2cdb-4a4f-a00b-21907e240896.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Naan Yen Ippadi Iruken - Kaalame Kalipputhaan
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 0xc80d9a4cead85086879d65f39cd185c5ee0752f989154ff20c816f6f73bc9165. 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/DGA0S2477752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce6a87f62fc701a663050370c52960a6c085a88f9d9ff7bba9c39579669c4e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0S2477751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2516c2b0ffc9cba5696fa01ed4cc42bcfe8bfe8e0cee7f2ad2d8e76ea10b0c09. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DGA0Q2413982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de8a128b80c6184768912341e88b6626bd3269e2f80cf69efdf609dc13b554. 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/DGA0R2426847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b4acdb261db1157ee887b14b6e5179da7f7ef8605b9662936cdaa62560398. 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/DGA0R2460842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80d9a4cead85086879d65f39cd185c5ee0752f989154ff20c816f6f73bc9165. 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/DGA0S2477752.
Simple Manusan (Official Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c42f9f435aa23132432881a43c5f475d2a21fb4e2edec0f0268778ce6f003e. 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/QZDA42573688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0370002de11971a1ac93db37ef9615bf8a620904416df124779fa04785723101. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZDA42573689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa902428b07bc2706d4be69d7256b41943fd32e67f7a9c8571902af0c9d77c. 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/QZDA42573690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa916bf5ff3737d6f010161069fa063e1671490ad7fcb063836c05330292add58. 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/QZHNB2370555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e1fc24fa2a5dd97904d8383e5ca1df4c34284755191fe3e88d782270724d5. 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/QZDA42573691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4142aa798846a2292275e28df0432b77c0d6065e4bfa12acbcc5b4fc84e2cf. 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/QZDA42573692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977b642d78abe4348fd09a99a92137e9728cbc124644c81a82956fcff630e86c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZDA42573693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc75383b1df55a98be8d97acb5dfb8fe36f56d9601db4a86e2f2229ab164081e. 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/QZDA42573694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f780d35de97fb37aa3b3acf567c002c08696f536ce4b195ad68f1b3f485d31. 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/INR832302062.