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 0xd99c4456cc0a361f236665708a0869a0b39c00e32064128f20d888082b5e9239. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c79b9d6-62b8-4427-8a17-3e8520003e4f.json and https://artists.proofprofile.net/proofs/artist/9c79b9d6-62b8-4427-8a17-3e8520003e4f.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 0xc3961f0b0d981428bdbbe21d00e6aaf77c5ba8bb45359bffe5efe8f408f53a19. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ESAAI0135409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa00e98795ad7cfd1c14d6853d08638c4c83bf0bd40d352ab6ec8a8b482658. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/ESAAI0135014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf81390d2bc2612b856a6fa18d6404e39997243a2e512c9feb369ab1a2c7c97. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ESAAI0130665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b2b249eed30ec751eea48150492e1ccffb39d739490739ed3e87c1cc368aa8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USDP20406153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac041ea096f64d42dd36a284ac12cecc27e708d39f38c613d343574c01e439af. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMDA71546302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f07587a8eb32c43d7e65773db0d9209a68b99639f3a8b9b7f7285e42106d192. 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/USHM20932417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d7161988ac2e79e26b52fe67b8ca7fc10908a38eed1bef71873d1edc5ca85e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USHM20932418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ba1952dbd08f1273ea640a0b5f12354c9cc168d57db3b1000eb9f687e8ae26. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM20932427.
Art Bembé 20 (2003 -2023 Remixed By Javier Monteverde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02199464ae62456a9e56c67bf299e23f7f8b746fbaa8cf0dfa188a195ee8a2e0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZ5AB2424081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d03f0c5d9f728e463ab0580bc778267b35016a63c201a8a9b37914a1b6fa1cf. 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/QZ5AB2424083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a8da73bd1d8e8b435513077d15a67f21cc587a41cc77be6bee59a519ef6f43. 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/QZ5AB2424085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d09e10a05b00fb9dd05c935728244752009200ec231116dccd79f05797b2b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZ5AB2424086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa3e0665ca840bb6da94e99a622a5db3343db496b22a1b67348baca8ab9efcb. 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/QZ5AB2424087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f604f16b421b1b163e769e373122d83ec42a9d8294de978b04df11bd204835. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5AB2424089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27820bb20cbafdf8307b3034302b830eef73376544fb5253936f230c9212fce8. 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/QZ5AB2424092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8bc76304a452228bf58f2494f26f85555561f4fe962ce0c009f70fa241c86. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZ5AB2424093.