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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd802d0c1260318b4bb3e3410f135cccc96fed80b24b93d4dec6ff30df64752. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a6bab0c-674e-4e2f-ac9a-b1b5275f9ee5.json and https://artists.proofprofile.net/proofs/artist/0a6bab0c-674e-4e2f-ac9a-b1b5275f9ee5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f77a085246ddcb9d0a274ae852bbb249a3882488f6efc4ddf541e586cfa1e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZGLM2507313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967f679aee4fcb861eeefe0f8e1b278e99440caaa6cd1babeea1cdb6adb00e13. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:29Z), 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/QZGLM2507314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb7e3f98393fdb1c121ffa832a9962e7579f9f323e272214fdf8c7c75dccf30. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLM2507315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc745b68de12c4096a2251a0f29494b9ae4c9f2a00f0fbab5d7fbd8ddaee2923d. 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/QZGLM2507316.
Los Lagos de Chile (Tírate un Piquero Que Está Rica el Agua)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82959316ca2113c456293813916dbf4850c1b7c6b3ef8d3bc3032b4e1aeb6b7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGLM2507317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd3d2f5e13d0f27c956aff54cf2dbf04ca0ba19c840f7f038e7232a5295ce5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZGLM2507323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf68cc5432fc5844d680ba23f2fe1a7175c9f5430001dbadb4ee1d8644d25b30. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLM2507325.
De La Estación A Tu Mesa (Live Recording)
En las Tabla y las Baldosa... Otra Cosa Es Otra Cosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1672c8bad7b662ceebcd113249ff5eb0d26a4563ffac44ba669e2e471679bbe. 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/QZHZ32020094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88853190033effa00a494e60deacf735c354179e98ed6d517b78723cfe2f831. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:58:57Z), 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/QZHZ32020098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbd739c7e85b53aa29b41fe47ed3cb4bec4a9cf80add687b5fd76e82e62c55. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHZ32020103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efb8c7e6365cd7fc129c5566a77b46bc377270c6b2fce78d4e1d138871194a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:57Z), 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/QZHZ32020104.