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 0x01905dcfea14767cf4202a2130fd85185b4af0ae17de6b8a67115935c17a72bf. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3ba7568-399b-4727-9a36-bc1d8e9536bf.json and https://artists.proofprofile.net/proofs/artist/b3ba7568-399b-4727-9a36-bc1d8e9536bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dry Bar Comedy Presents: Sharpest Knife on the Porch
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 0x5d3aebdf06bc32e5465c19fd46a739770731b95b11480c9de5b9137deb2c1c9d. 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/QZDA81852368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4730430c4c1a052d84249bde7a09fa7e4fac1d6c0753bb174b5206014a8f5d. 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/QZDA81852369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1b0751760c140621c144413742db56740e34ab2a64be8a6a70578759a55a44. 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/QZDA81852370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f920c94ab6cf2850fd0b5abd128b4065a17123ba45d24828eff64c1e4079f. 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/QZDA81852371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445f97237513d0f0c40842ef5204ab3e7114e8e254ca11f0c1393a9e2f661e63. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:28Z), 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/QZDA81852372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a2bdfa7df90b0f97bec5ca7453a16d79bf6ee182e12b3d4520cbbc478472c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZDA81852373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3941f17ea5c6f9f934f7a0f6b1cbf1869f9c2eaf18282a2569448406d7ad17. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA81852374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014a1888afb838babf80bef66976a684ec844e5afe93535904f49faffa5d1203. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA81852375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca5792291e5abc131fd3c52a6cd38f07fbc97dd4f345fa101f36672bd38b6de. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZDA81852376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370a8b2c2ebd8054ff6ac05de94e67e972f32ae0e69d39f94d019df90f5c0a6. 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/QZDA81852377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb95ce805d9efef45502d03ee7e7428a5d1e0c3b34e6aab1cb6932affb0615b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA81852378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd47da06743ce8b3cab0ea68e2ab4c01a62e7f5b120802f939a72335a305340. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA81852379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f63e4e5b91504bd0cbb8266419da740345613a482d5b04ab213d54346a290. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA81852380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b5bcebb1fb7956549f88e0130811c277bb95e115464fc5ea6b81a27aa9ce6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA81852381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf588ee2b678ed127f603a2201f582546dd8d61e4696c401201a2fca469c969a3. 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/QZDA81852382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe027ba0dc7d061ebf97357541ed6f98cffcd875fa02f79355aadf2cb1937d3fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA81852383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a72f3dd2aacb0808767776d05cefb1fa8228b1b7ad1f64f5a730bf544da69e8. 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/QZDA81852384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315ab77c4cae6acf660db70a70af1c758f5bb7a7efb978b879dc9bec7452fea. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA81852385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c76c4ccc27fc35f89af1c94f6805b51e92e281d59dcfe448465395b7d8992e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZDA81852386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcacad4427e065fc38b59fbd6da9f1ceb0e9dc58ae8aeb7a911241adb541c0fa. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZDA81852387.
Dry Bar Comedy Presents Jesse Campbell: Sharpest Knife on the Porch