thumb|right|300px|The Spirit of Goodyear, one of the iconic Goodyear Blimps A blimp, (/blɪmp/) less commonly called a non-rigid airship, is an airship (dirigible) without an internal structural framew
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 0x5e2a6f9afc8942db4ea4c29f85e1a074d55e5cc4a6dd53103d98bb3e570e4bce. 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/a18cf5a5-a7e9-4ded-b6d4-8d9d012931b5.json and https://artists.proofprofile.net/proofs/artist/a18cf5a5-a7e9-4ded-b6d4-8d9d012931b5.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 0x336d0fe062cf7bf8e995b114e16f96b7a2ea7c2ca46b1b4263f722db38255754. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYY2214368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf2a3b1462dc03093fc4c6b215834e406cd65e524c8323757d80f4c132d81e. 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/QZTAY2250987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0d26a074636a86333c57e1bcd1f13f14d3a2c6259c9f4fbf175b9c033ad547. 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/QZTB62257626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391cd9e10641aa7eb41a2a2dd0a039be5d6559a430585364ee63112417d08c39. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:59Z), 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/QZK6J2312943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ebaef55c880a3c6aa43bfa6a8cf5de2329dddd114ca10cfe764e3aac7cbe1d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:49Z), 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/QZWFL2334442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7422acfc93c8d443f33e9452bc6553240321bc6f7b496d8a1e5e5ccca6a088a5. 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/QZFYX2497530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba01383c351f71e2baeee657132f7e413c476df63b4694c1565cb7d54b83994b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFYZ2476154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd962adfa9f46c2ba2dcbb75a41ffab66650e4ba0a35de907dab1ec20899bfbeb. 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/QZHN32485780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3613837a7946cda6616c7c3fd701408ab0148ffcf064ceffb0193c31c425794. 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/QZHN32485782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4badd8bf1adb46671e9b6704d19cbb5ddb312d43b25c48026f999d9148ca3a60. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:37:14Z), 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/QZFYX2422236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9918714705b477b47c22686569f22fa518dfc75020bd36941aedeca4f77668. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:43Z), 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/QZHN32485785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc98265c66fca08b7638779dfe7b9d6f515de8470faaeeb98d8f71fd0f5fd8c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:58:18Z), 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/QZHN32485786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c9915335088970e24665ed486b4f9ea01ae961b587912e5e9a32ccfa60d967. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GB6LY1601516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ae5d037c19e4e5e243e104eac8b605af006e53122694d430ec4ff11fec8bef. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTB62461051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe797b0533e0f6b63e71113a6cc271e8fdad988e4df7a94865426edf20300adf6. 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/QZWFU2444746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2383792fb2e970eb6c2d4cfb9719aaef3e9388777017b852a46d2b7bfca7cbd4. 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/QZZ7P2429794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ff12079973e4d418e772818e6821b4b53a5ed7efafeac0bf606ad23dd6e10. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:05:29Z), 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/QZK6H2552858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d38d25a5e0554312849e696e6b6ef5deece72377b2ccbf8cf521f090d71ff7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:52Z), 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/QZK6L2575436.