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 0xbab0936f22949d023bc7a7d7b5aa0d8b8d7108cdc9b90d575bdcb8666b3d579b. 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/b24aed34-c2d9-4f92-b5a5-a33d2de29f55.json and https://artists.proofprofile.net/proofs/artist/b24aed34-c2d9-4f92-b5a5-a33d2de29f55.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 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 0x5e5724139c9d949c77fcf0eebede48e5d3078e022e21771b586754be8f38aeec. 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/INS181303083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec83a75b2b63c9d7a862e96d4d491ec8ef8e00080475a7d04822d9901418aba6. 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/INS181303084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f998608f7ca972e5da0777cd2835333b86bcc6fa4f18f2b61d1ac585c9da782. 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/INS181303085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce564a791dc9666770895c06ec26723a6668b4abdba41fdb26ab946773dda9d. 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/INS181303086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba3f5bbfe5fdc140dd485348d81d47b3cf3c1c30e5ec43b292bfa96df785a89. 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/INS181303087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba37bc1d95c5a689af7f67091cd44fff0632728feb134fbccc3284ddf6be954. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/INS181303088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180098459c868e7d175600c746553c12b283a20643ca15abff982afd533347b6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INS181303089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee1141f39add0cd37dc1072e05a49fab0836259f3b1b6926700aacc2faee2b8. 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/INS181303090.
Sri Sita Ramachandra Vaibhavam (Annamayya Sankeerthanas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf3fc6f97fea72c7922438a42a259d5a0c7d27f5564e2077c2aa1fe93ea5a6. 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/INS180357991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cccb9fa06069220914aaa1f7a91ec14ce70f913552049a390378aef7f1ebf7f. 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/INS180357992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a18488a77fd451e439488084c085b8911002190cd24dcfff18c3eaf1d18748. 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/INS180357993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa23d97c95d24ee5360199731f1eed61a7427d66f29df713fa11cf44cecb8fe. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/INS180357994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08adc467808f12e259b1cefb36bb4583c37950ac3a667a5a0840a7a9914bc738. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/INS180357995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe897386aff76e4663bf95e61c17c1f79b3a4f08b31ddfc16e41838825a8af344. 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/INS180357996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934050d7d40954b288f3747343e62394304c33c12f7e91587c08bdcc6a59e21. 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/INS180357998.