GPKism (typeset as GPKISM) was a gothic/industrial music groupAnime News Network Tainted Reality presents GPKism and Seileen US Tour, Dec 9, 2009, Retrieved Mar 14, 2010HMV Iudicium Review Retrieved M
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 0x62461603dd7437705c07fe1d9e602646a4a8bbb6b0c3674e6d628898d277fc52. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91a53bf2-c43b-4da5-975d-cb343676b12e.json and https://artists.proofprofile.net/proofs/artist/91a53bf2-c43b-4da5-975d-cb343676b12e.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 0x564ae39ce592be92ea956dd50581f4c23176d2f92f4bd0be556092f3e3a517b2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USL4R0756459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f04c5f1da42dbd27451263b253ee601d317f09157639ffed75e37e65685122. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM20982870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf36b52c1da30eedb2412b762be1a76ee0ebf792957ee575edd19d38195392a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USHM90894837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38722281673dcbeb74acac5364fa269db2be799dab31005dbd3b3982eea7f205. 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/USHM90894840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4002837a6e1f3dadffd1d466bd722032c2c2d2825168056fcdc98675110617c0. 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/USHM90894842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4cd9d928fd4606b2bd98c72b6cfe5049dc1d16b2b95f8b3fa535ab0a73e188. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USHM90894843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075d0ccb2d820e513b660ae4ef5a3a09c6d5655899b3a15e0a21da1207a1b249. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM90894844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc881c80a660d69612698ebafa61433db5e292881b8c1a832394d6cdc146c32. 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/USHM90894846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47954428475694b9a4314db0f396a392564639921fe17a67d61ed8e666641ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM90894847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd8787820f48eb0a7cfe95b943fc049a20968bc53cb519afe39ebdd611b749. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:20:55Z), 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/USCGH1061102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd9a70aa9fe4592d9ea653ddd8517d351721faf6d15f361449f6edf43d0cab7. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM90952659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1ce974504c397c91cd62a83c8258b5decd42c4fa049f27e41c9e70d2c90d34. 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/USHM90952660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8c680f83368fe51c1fa98ee26ad8eeb4e776231f2dd084f08fb54615353754. 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/USHM90952661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6444d11701ded7edfa2e053009ad8c850a8aaf0d76629906423a8f59b0e3b0. 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/USCGJ1158507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99480245fdef5bd95e87a31e5c769de7cc0b68c939e39b5952d6858751ad50. 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/USCGJ1158508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c817c1b3e07ce575ff5d56d6c26d7be7b8e3bcf54a2d539626fca492a4ea1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USCGJ1158509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567de5f0d2dc50fd98e5f61112795dd892f28e9e66e3bc71ce666526e6208b59. 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/USCGJ1158510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351cba6eaba225bec2c2b0ee36479cd4d416d8faa4d05b10a6c9f35ddb3f34c0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USCGJ1158517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ccecce981bc30aef07506dc5c07ac93b417db87f255f00ed7f5aa0942e95eb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USCGJ1158521.