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 0xd3146ba92544b989a3267226a97d0f71977ef23f8aa7dac70228c752c1b2b849. 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/37a75c64-d5f7-4e12-9b7b-701677064bd5.json and https://artists.proofprofile.net/proofs/artist/37a75c64-d5f7-4e12-9b7b-701677064bd5.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 0x491860e63cb3b0daa8e09e9854e895df250ede6eda2b50d4b893a7a59f4e82d7. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USCGH2404931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6fbe1ff678e61b1db7cda7295250fdab13fcb16cfdc6d747e5c08895b8a566. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAJB2447190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1084be0281f5fb03321e58e9ab3aa3b684649015a5527c456877ba013690ce5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJB2447196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fe7777dc3b61e26c9ef092a32fd325526d254dd31f2a97f0b9100576e4e2f. 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/TCAJB2447203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4fcde60f55c4c981978cc3c1b51e2d169b48975217a790393fbd92238c30b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAJB2447232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9babec357a2462ac2d79d606c72c6f8bf186937abf867ba8f848295cf8f1790d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/TCAJB2447248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07708df10d16438ea0a5217302f414129bdc544034a06245ce7c76765943cbb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJC2447263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c218417a2680c7dbd852d72757160853e0ad2b2885c0a248c41e21f2d82e026. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJB2447274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d70a4b990d5873ea67d578fa60bf1f26fa3881911712c1fb9617513451e5e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJB2447281.
Wisdom In Collapse (Live from Salt Spring Island)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad53a535142fc561227cfadd40edbaaa84881346756f355609282a8fd02733. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCACY1734397.
Patologias del Invisible Incómodo Antología (012 – 014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90604d851c7001d1277de44f855e8285647d9ea3afbcaf7e9a2c6b179e3b756. 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/USHM21527705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f304e1035cf7796d1b9bdd16911c42269d2484b196da92abd50c0d08c23f0. 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/USHM21527711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bb8226af99a38d40092600e83e3fd5963d47686c08aab0d79ef57fdc50839. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USCGH1219640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b7b7c2715d72cc5b0683d9e8c50d82847c479abcfda40dec02625402fd6184. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCGH1219643.
Lado B de Patologias del Invisible Incomodo (Ep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e4a467c73c519bced261ebd2cbabc8285068629f426a6ea7a80cce55c68385. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USX9P1320853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8c397f62a54c9aeecd85be8536125f336260172702ffaa46121a58a82dde4a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USHM21579937.