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 0x1659bf53b5c9288c9f59f0974076e460bd9842a0da6e41bd642927d454c1a94f. 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/ac23b5c3-0443-4bca-98b2-495474886928.json and https://artists.proofprofile.net/proofs/artist/ac23b5c3-0443-4bca-98b2-495474886928.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 0x79e54f117757effc78099eac352bc950b9c9114eb8622376d7cc37021cbbe3f0. 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/INS181000257.
Naache Kanwariya Shiv Ke Nagariya (From "Nache Kanwariya Shiv Ke Nagariya")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1434023a36e75d1f57b0ac1dc9467d47f81680dcf84904ac639c78447b47c3. 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/INS180270510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a891a64723a8eaec01408c6cdf8c45aad94e553a2d0259a7d392407725e508. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/INS181100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0d56eb60cfc9362af1c92a4bf250336443b152e3facfd256c997b14e40caa6. 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/INS180806102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9e8da96096dc32ece88082cdee031403b6d2538aa18c7088d465a9b7dcbf1a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/INS180800720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd09ba11bfcce0e59b5260c28417a81c64a0d791179910340bd40d199db82226. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/INS180800721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5064770a99e467e025ab085a10da7210587428a2b9de3c0e19bd908a036aa5f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INS180800722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17711841f8a8c8c60d109a8e73f7601b0bbfb2d65d9acf04760591a197275bf6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/INS180800723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659dbc335536d26af60073352c10e41eaa93d2cced3c14e1ba5dada3bfb1616a. 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/INS180800724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448784c76888dcc03c9fb7d057a7fead1d7bae8e72f6c9fff38225c81dda44a8. 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/INS180800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48726cd94112331dbf309286f5dc01b947f640cf74751392964be24e73c0ff9f. 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/INS180800726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e4d1b116e45ef79983a3fe4773dc651d93362c82abb03e9e249bfd3bfc4c2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/INS180800727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211536cc10a66b8d86b9a700cbb35d82772a3a2d05f535153e0b022455186959. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/INS180800728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb9a4358a9b5f98dfa5539d1f49eb30a9cd31f0cd6b995beb0220caa9e7543. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/INS180800729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd67ce7e18dc342181cb4e306f25cc2af7c1bb54522e93743ffc0b55c0b8488. 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/INS180600644.