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 0xbe2e849062d8f29f2fc47edc0168a640b7cfa2de3fac16a48271a4b2eef36e5a. 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/17e3c1e1-47b1-4510-8345-9d5c60e1b8b1.json and https://artists.proofprofile.net/proofs/artist/17e3c1e1-47b1-4510-8345-9d5c60e1b8b1.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 0x6270d8022d73c25609d3ce32a3bd246d3d292cabbfe1a0a5f6b5d3d77b75ffbb. 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/TCADP1858665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1603a308ee2b524c25c863355a87849cc6ef49bd2595084bdd35c1f2aa2b91a3. 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/TCADW1848182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bf3a6c06a7442590006d4db850ff6bb5e0720a8f18f28fa6736ae0a93a64c5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZDA51912519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3a8077bc6ef1607098cfb7b323289b41c6f1309377ad85f51e0503aafbeaa6. 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/QZGLS2317430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82a75acda050242c20db5d50650d53c79020193fc1a3bb8369a7e8466beceb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNMX2332999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82a75acda050242c20db5d50650d53c79020193fc1a3bb8369a7e8466beceb. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZNMX2332999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65249d935ea3ecef0390400ad6ee0ecdace11782932324ca63e7e1159af15600. 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/QZNMV2346557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623ade6ff67ad5a5c8a3390b84c26eb820f78193530c0b8e2ebb574a542b9748. 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/QZL382474005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7212014975aa05dc0b4094042a5b854fce8ad7dc4366e8df584d81b033e7a977. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZNMY2388519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d21e7eb99337ac50e994295d287f147555247a434360e4bf44a4784c3fd2111. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZL382453034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3a8077bc6ef1607098cfb7b323289b41c6f1309377ad85f51e0503aafbeaa6. 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/QZGLS2317430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6324cddadd9d7c01c279b9d9be3f63c07eabbe9a8f831a117346cce2e316cc7. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZMWW2441548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf0a78b58d369985fc6e1e8e02f7be87f8e23c516a4275a75dbf09c795b9b08. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZNMU2472833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ed8ec6b4883d383f30ade983bce0f66b7eb37bbbc584f623175799b60859a6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNMX2445343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576578d93462e349ac15ef27c2d58b785d1111baabbfd43661f79e41daaad767. 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/QZNMX2553561.
Démosle Con Música: Camila Orantes (En Vivo)