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 0x332b23ff96d9314ff87c982d6f62550bc8ca76ba943b315c1e4a2086143c99f2. 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/637bef6c-da07-4c43-aee9-eaaa07361727.json and https://artists.proofprofile.net/proofs/artist/637bef6c-da07-4c43-aee9-eaaa07361727.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 0x72711901094cdef6c71c1715c891e674a016e2bc2bbe05db0a65f4aac7856e45. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USHM81886780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c70ac31f8070f0576f8659d2fce1e68f17062b6ca201df66a8036696a000ddb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM81886781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d13e644161dd245bb06c393c6c0221f0e72c51218db90f249bec237527b0b3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHM81886782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07907f1533c0212483a74dab0c1af1e9d0a9f711f1827a3e1531a3438b3e069d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM81886784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcef9aa620fee1f54c1c76926da108c7e41ecc6c65fce9d2415e2f43c53b2dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM81886787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ebbefbebd29ab31578e65c1c577405a6e30debdb11213d0d30cabf70ce51f9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81886788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82dbdae8f211d7c587b3456f67095c931aeb68907d295e30faf22be0fe77508. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM81862524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44c131ac38fa2f96f1350d4adac1377888aa9c11886c307ef4e7167b645536c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM92034905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1765523ea608776e6e76728614c88853f68a73122654e14877deeb43c66c4b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4Q2003510.
Al Lado Mio (Versión Espacial) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c71dd4ddfdb387b57afd8ef6eb00d59e34fae7b35a5337d5cf6a511b550f1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USL4Q2003512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cfc6c2c963604ec2ca9fbdc186ba29b927f519224c5b0751043295bc2513d0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USL4Q2003514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4680b117c4231e2edcec44851a37df1d25dad12318056896da36720f7fb9fcc5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USL4Q2003516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafd81f3b7490d220a4959d3b5ac07ffb0cf70eaedf1b688e9143097df1349ed. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/USX9P2087529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474a0194a5d0838f8a8fa52284dbb045660eca3d7f6306cbda4f0b2dae7eb5da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM22248651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4e1ee5a1e74220e3b1cfbe8a8613ca5c4795469fd61ecc2a22b56635795cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282392422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e44839182073d5b0734002c20f8a8e58d8df8b83c1e235c5b19ce21eb76cfe. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/ES71G2430883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c85fa6ee498b6faf695ea685fe7480af4fcfe286d9a5ded4a2ee79027023277. 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/COF012300224.