thumb|Bronze figure of a yogi in Dhyana (meditation) by Malvina Hoffman A yogi is a practitioner of Yoga, including a sannyasin or practitioner of meditation in Indian religions.A. K. Banerjea (201
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 0xfeab70995a9b7969cdb1fc3fed3561e3d08b773d12092a22dbbd4ed6a2bf8468. 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/0601f372-aef6-4bb3-9143-fa7577014dcd.json and https://artists.proofprofile.net/proofs/artist/0601f372-aef6-4bb3-9143-fa7577014dcd.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 0x932df075a249e7a66da9cc51a984b9913c0eee55af8d2e8c817962f8c8651510. 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/QZFZ42335318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1919268a773cc442546192921d803625b6ac26076fe8ccd34fe59e238d52f7f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22575278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685990e4c3defe5a04dc22ac31ad80faebe9ac214e92669dc330dbe94705d9d2. 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/NZPB12403598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06335cd4bbdca55064400ecd113972fed7e26170de105c7a6f1c0687eb01e17. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/NZPB12403395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393ee3d7ca9afc86149702983260ac7a18cdcf95cdc863ffd3873167a4c3d1bc. 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/NZPB12302276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92498057e624a46f439d8cd82fa7b0c22c57d2711769c2b7679a296ee46118c7. 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/QZDA42265018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2e388fc5ca390fb9c54296e7369da09589718b762e25bf5362c4d721b32c5a. 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/QZMEM2038977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b39ef089062df5854e79f99f6af18179291a76f288c4e63a5f0479c1e48f3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZK6Q2129438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2392a4538a7ebd18a055e4a2da4d54c991d8223916bf182b0da33357eca96e6e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN52151921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e14088e2a2b037286cb6dfea9f0e5257c0b9cd2ea993193711757d80026cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA62117937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7376d2e8d09441588ff9b01a2916c6f4ea6a1d95ab73ae254a5b75fc56d0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ52108288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ddefa41d65e8f8643e73e9d6c185e77226b455ab3f4d80ed2c61abc3fed756. 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/QZPLR2058138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d980ce80c14d2e43f50f16c1f91cfaaa15df8b7646b21381a2de48324be52. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZNWT2024063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73743e2886505d2c6759749ffbe6b3ae99e3fbe24ac6a4fb534aa312f6f6ae47. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEQ2081125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f8c3bd16e0f49804f0f9efd3af084d22aa2a1749ac5114b40d0405a0c67801. 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/QZK6P2012863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5a7e89b8dc43e2e899b4a94d9f005d596b54fc074070b6c55ed5a4b46dbd7. 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/QZHN52232979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52724f85454e72fa90ed3dd93e4d7e9985553d86c7d92a8cf9e731172ef931d6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZHNB2176543.