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 0x4cff47856fb1ccc1858e5a7a2b32fd3e0a1aeaeeac2b124aa2a5577cd2971d87. 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/cd0f857a-7cdd-49d7-b9b9-fb08e5e6a207.json and https://artists.proofprofile.net/proofs/artist/cd0f857a-7cdd-49d7-b9b9-fb08e5e6a207.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 0x8c8bac0d982eb4c52c4ef7b8622ce2c5c539b922c9270f3d7279b7d484ce51bf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/INP1L2400892.
KUKRA BASAT AAGE SAGA PAHUNA TARI HARI NA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e2481dfdee6039adcd19f1cf6fb695a47f3cc624f82833fc3368f696ae9a4. 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/INP1L2400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038bb2046092b8d9ada17dc806023ecd63ece81b1ca6f8d6fe70e50deeafbc7d. 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/INP1L2400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da07be89ac98cde387df451e4aa552e920e1ff6ab8fadd51911a16f9d868d69. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/INP1L2400625.
Tor Angna Ma Barat He Jyoti Angar Moti Mor Dai O
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3603a2fe90842a538f39c0c601fbb68d5809d04a1ebda3654bf143f8c86e9ff4. 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/INP1L2400639.
MANN MOR MAHKAY TOR LALI GULALI SURTA RAJA
MAI HOGEV TOR DIWANA MOHINI PAAN THELA WALI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca4c6d43f5d2ee696eb7a2db957ed6fdafba960244cf22aa2e369dc60e1723. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/INP1L2400617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63fbb8b5cdb9e4eb84f502d650f1953553951961a5041c3d0e6bb4a6e29b774. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/INP1L2400630.
Bhagat Man Balaway Aaja Bhutwa Paretwa Ke Raja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce28f72901dbe55231a3702b5432bb3dfcc0277a47fb7be0ccaaab5bedf776bb. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/INP1L2400586.
Jag Ma Sable Bade Tor Naam Satnami Baghwa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d596768c4c4f9f317f25fbfc7368b406a350ac8dbbcdd4fc826148398bafce3. 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/INP1L2400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c1831c83ed3b0efdf2664f09b34f83ac1df76489965d0cfe88cd5e3eba815d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/INP1L2400531.
Hamar Maya Ke Bandhna Jiyat Ni Chhutay Wo
Suwa Bolat He Ram Le Ke Tor Naam Tola He Pranaam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591807b8b2d943b3fccd0734b5f2ce61bac24de7bb8baf4c1b85da2794024c10. 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/INP1L2400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83db88b9a52032a79a58181d78862c1772c1122e64fa5d94d05c7e939fce20f7. 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/INP1L2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bef57c32bf037eed34772641a48b2936fae11008a89a5beeaecdbcbb03ae8c. 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/INP1L2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cdd2dc7ce4f28c0c4da7df58f6563dcb339a21acbf18ca588587f68dd13e6a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/INP1L2400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0037257d50980c0337a3ca804bfef65144b960da154773d366bc16a93ea1d8c. 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/INP1L2400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53406223b189e26fd8576d11a642ef530246a5cb667a3d7706e4e567036c9fc9. 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/INT982437611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d7f711ca7984b33fc81e7b1cf23a2080912759307359de250775c2ef39d850. 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/INT982402329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd8f0887b9b97e193cb84fd1607c2fcf185f0309572af640acd879becf03f49. 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/INT982402326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe87185da60a392ff112e47e958a25c38a7f6fa8da5d8b82ed62043ceb5279a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/INT982402315.