Crack Cloud are a Canadian musical and multimedia collective currently based in Calgary, Alberta, formed by drummer and frontman Zach Choy. Alongside the group's core musical members who perform live
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 0xd5e0c4bee1dcba04645046a9c4bd4b3476f6cea75e5e32f4ff74f8e9ecd7512a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4421a785-e903-485b-8e09-dd40aef3ebf4.json and https://artists.proofprofile.net/proofs/artist/4421a785-e903-485b-8e09-dd40aef3ebf4.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 0xe3b9a6094e40ac9ac005436f115ba6896f6389803dcf1e925257441dd70994df. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBVNV1800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec9c345063d14576b702edf82fd194c377ff337f63b7ff68f3259707b7a924. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:16Z), 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/GBVNV1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaed04c97915da078f34193875a616a18d65f64e9768167504549b729d40f6e. 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/GBVNV1700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f576cca002869c511ff74f59ef890b0c3c021e31cac93df6fa3e61c8912ff30. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBVNV1700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16d82c06a581d5f718d4a6df684115d304f18da8d4de8484b7867244faa0f7. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:01:18Z), 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/GBVNV1700124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528294e8595ec6c16242fac349e004d23957ec699f940f60276b00ecc158387. 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/GBVNV1700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557748e30f0be2e8493e067fdd80c4a774bea1a5b20367b5849cad04dba409fd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA2Z1811760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39dd2b0c5bc5bd2b3d43d06aefaca2d484988a70a2f0f7dfa3cd99dd8757bba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:11Z), 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/USA2Z1811762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6355e50080a0a3e7bd1df1dd1d4fca3531d6f89b746b316d9f84516272326b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GBVNV1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0be6f6f1741d4652e5e407ee35ec9d015c4dc73ead3dda338cac5d074323cca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBVNV2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cad6d9362dd24e6ac6ce71c038075e3fc6c2563f55c75a66458ab586fb67cf. 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/GBVNV2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc665160d5ef730ecf56ebbe932854f4a4a1cd54152b029435ecf6bba3ae273b1. 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/GBVNV2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f0eedeee8d9a20f4f40b410dcab0f9c27235a1c3fbe6374252e96ab971544. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBVNV2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85432f5ac0df5f780d42253fc560775ded9cde5fb9baa62bf23a10b99511e47. 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/GBVNV2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0be6f6f1741d4652e5e407ee35ec9d015c4dc73ead3dda338cac5d074323cca. 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/GBVNV2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cad6d9362dd24e6ac6ce71c038075e3fc6c2563f55c75a66458ab586fb67cf. 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/GBVNV2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc665160d5ef730ecf56ebbe932854f4a4a1cd54152b029435ecf6bba3ae273b1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBVNV2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d030ad4969474f812e5c24997a408f909632b1b5ad9c473aad533a775d488eb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:50Z), 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/GBVNV2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85432f5ac0df5f780d42253fc560775ded9cde5fb9baa62bf23a10b99511e47. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBVNV2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480fe61e05b94cfce1aec5b76b7e8ad768e465c33f6bb05369a80304a7355f3. 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/GBVNV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3bb4428cc18baad4845bee260ce5ff06ae820aa6fc95bdb7526342e0ccac84. 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/GBVNV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d1040fcb6fe5f77ae1b46f749594a31a85c0cb8a7379182f28b907384851c. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBVNV2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17a879c1c7553554abe7578d64f50f96816e3d2d0e2147045935c68d4f1287a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GBVNV2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480fe61e05b94cfce1aec5b76b7e8ad768e465c33f6bb05369a80304a7355f3. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBVNV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3bb4428cc18baad4845bee260ce5ff06ae820aa6fc95bdb7526342e0ccac84. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBVNV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d1040fcb6fe5f77ae1b46f749594a31a85c0cb8a7379182f28b907384851c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBVNV2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6972bbb3ada7a3dd44bb9cd358eccc440f63a48723436ff8640a0f24923d550a. 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/US38Y2446301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f0287e91e20c1072b69844bb0d8d217a47fbbf478c1515a329ea234afadd9. 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/US38Y2446304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd1eb98f6e5424817b08a3a30a205b47945463e4b503a2b8880db15c1ca9ff0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/US38Y2446307.