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 0xdf367d9b7c606f80219a1ad03a8a16c8b4d356666627defd4ce3f242e2f5633d. 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/12b77622-bc86-40d7-b512-271d4c973a6b.json and https://artists.proofprofile.net/proofs/artist/12b77622-bc86-40d7-b512-271d4c973a6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A.D. Records En Vivo Desde Culiacán, Sinaloa (Primera Edición)
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 0xfd8bd766f6f093030a625f30bdc8fce85d52200b13069c0ccb9734fd991a237a. 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/USHM21818422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aa002819122d610390b213fa894d1b9ef4138c5e32d7ab52e63a1af82ecdca. 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/USHM21818424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d8036bf0e8f9c216db3deda7f2f2d5aead883319ad2b1f67082441a6a50436. 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/USHM21818426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3d1768cc1663f48a1760fb11245908b498e3ef61c44db65ce6d20c5f1172a7. 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/USHM21818427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746aa90cb2848ece864c298632c7459f254e0de034436057131c118a75f6f926. 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/USHM21818428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa455fd235af5bda122a0c65f09cbeefca8f7d6b02ba7a631d15bd94d5c76a632. 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/USHM21818429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d681dddd904dbbbcc1b8ee3e457b056f0ae19d065cc13b2ea184595360fb54. 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/QZKU62000304.
Ya Se Fue Manuel (feat. La Decima Banda) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5657ef5296ae154c3535403adbd3e11af5d34e3ac605eae151aaf6ba7870bb26. 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/USA2P1901048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b75d3595e8f78cd87f5b0d731b7228e577475012823d119425dba0af4109c. 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/US3DF1547383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50655bbf82c8ef8975bb625c32183f8a7e430dcba3fb37c5ede81aa4149e2a9. 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/US3DF1547386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d0a71ef0671440827506a4bd2f240a75ef04184f9137357ed4a8b5bfa05c62. 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/USANG2490953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8963e24daef933247a4faf8cc01c32d29e57fd40d22efbd2423b458d5755cb. 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/US3DF1984067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8903faa0eb93b0554fd6a1a483505dd13936adf06790470f3b20c0a3f987feb2. 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/USHM21770178.