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 0x57f6952f8ccd3e66770f139eaad6e9583e4352e9fb04cc32c96342f9837f87bb. 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/2a49ca9e-f7c7-42e0-b0c5-98584b78f0f8.json and https://artists.proofprofile.net/proofs/artist/2a49ca9e-f7c7-42e0-b0c5-98584b78f0f8.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 0xf0976d8866f18a6cf6de966d0f72610245a41fdd3f4e111b988dc0893219aa25. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:40Z), 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/TCAHL2310091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e9d709294d5991243b1cc0e30509168ad517876e55126d6cb3645360ee678f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHL2367910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd10a3d67f8857fb488bb56079e496ca3fe8def249fd87775b6d14730e0deb7f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:07Z), 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/TCAHL2387012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6acfac25cf3ec191091bfa1e978e030b1203bae41bad44ddb5bc01fd4ffaae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHM2303478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8442e76faf4fc1b08c7b12b274dca995621dffff3459ee47c8310348f5e854a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2337333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300b0c00e174482650c74149301a5434323bb545fea095203e4c15624fb9036a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAHM2337337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fb6bd01f4350a2798464b29c98d33ae164ef75e496734ee34da0b730d53fe7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2337338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9465135349ab6c7b92e3e2755096880fc8ea25cbbd4952b6e17c54bca9306. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHM2337340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68becd1b9bd682cb002d2ff2a09b7c1f0b81e7811da1b7919bdeb376d68c40fd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHM2337346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb997c9ff4ce6d9ca3cd8c541db1237d87a976cd39249f4da0c5b74217daa09c9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAHT2499632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f023454bf8bcd2298d56c197b4c0176b9f84d878504ef406a8a88b976fe9ca. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:05Z), 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/TCAHT2499637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852965664ffef83813e6beae45f0fed15f1d4bfaecbc87114554671a90d6114c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHT2499641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd6fa514bebbb2c6eb8284846028901388a1eacfd8818ded85f408c6031f5e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHT2499642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1625c0ee2f15a0829206b49e1d4a8afd08d0473c4da5ca34b02271a0e408bbee. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:34Z), 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/TCAHT2499646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9e27a393d058043e90d68e416da0bbfaf63de9469632dad56c534c06637490. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHT2499648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84144c28cd2aa11b63ffd8be7e0e62390b7aa7b0a6bf3635d607722f0fb9560. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHU2436034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6303944abf8edd4f7adc71fc45290336960a2dcbe349e873a5bd71f44e2a1e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHW2403024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faea44998e38602f82fee9cfd7bbe379f863731311e1a9f157f6e5d4cb0f0bf. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAHW2478738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912f7641b4d0eb1f3ae7d830379fca2f3f8c326f9d8661a79d9e3db5aec0b1ca. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:32:48Z), 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/TCAHY2426004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52416a89151c18f0b5a733ff71e05d464e6128cd0d0af30f44ff9806b84de96f. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHY2426006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd7fc7d2bd6b1ed3f928d9dea7919c40db93f638c4055610e4926807a6305a. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHY2426010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878bb68a1874544e979ae58250f17ab1afe9937ea7bf98979f6072361932980e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHY2426014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b579c4cf2bf021bb0765e49515bf70ba7b832396d2fa7db5176516b1efa5d2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAHZ2469309.