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 0x24b170cb74f4d2dbda11ffbcbc1668f6aa0aad9dd09249b1acb1717ce9009fd2. 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/a24c86db-9012-4693-8983-7172f77b44a8.json and https://artists.proofprofile.net/proofs/artist/a24c86db-9012-4693-8983-7172f77b44a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KukkeSri Subrahmanya Varanidayya, Vol. 6
KukkeSri Subrahmanya Varanidayya, Vol. 5
KukkeSri Subrahmanya Varanidayya, Vol. 4
KukkeSri Subrahmanya Varanidayya, Vol. 3
KukkeSri Subrahmanya Varanidayya, Vol. 2
KukkeSri Subrahmanya Varanidayya, Vol. 1
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 0x8ef566e97c64c335ac67bfc6fb795b1056d6d06ab0b1157ea407abeb4bbd927c. 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/INS9S2202242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5003fdc48ce9567806b59b6910b88d4e906b7155db5365374c873c33f0775e02. 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/INS920800458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb3f1c7279ec4ab82e97f7d088ec2e0eeab256f6f405e6f0e67b7c893904c70. 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/INS9S2305873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab32a339865069bdeb6624a446bc37c8d10ddfad9b14cbef696e3b5d793b17. 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/IND292211875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5bdab5cf167019834aae067580232820af934151f99d96c55eee9b99924e87. 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/INS9S2202224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8569b5954d1a7f2d936c16abd8cfc53cb34d270bb1f9438a37307bb9fee6840d. 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/INS9S2202208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c748513cab2f7db49b95a614a05ae343d6c8239f722e6cad8e69a63224051a2. 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/INS9S2202209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747c3e381a43c97dd583385e3d6d5dad2be442f94f7b95ec4468e73f7de952f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INS9S2202211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64796a50f5c1b5acad8168117db7e01df53210fb9f1b4714f8d3f6de0501741e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INS9S2202212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8de5de1c96dd5b554e69c564f943015b952bbff0a5a117653fc3fd0570ce41e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:57:17Z), 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/INS9S2202213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9318919d0dd03c7c619cc685025a02da2c46aa036ed58280ad876f2d3e9c2dc. 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/INS9S2202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf12c93cff7233f054f94e2245df983cd4e3e5a9c234e72850a887605d19e5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS9S2202215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446905f9dfed69138a82241b5bcb0d895d89783ce5b535804b90e60042e38a4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:56Z), 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/INS9S2202216.