Tub Ring is a Chicago-based rock band formed in 1992 by Jason Fields, Kevin Gibson, Chris "Mouse" Blake, and Geoff Valker. Biography Tub Ring was formed in 1992 by Jason Fields, Kevin Gibson, Chris "
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 0x8b71899bcb21b2da0c3ce7a3fe9f97885278cc116ce709ff59625d516fabfac0. 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/29bd4301-97f9-4b52-b13b-f227331d1cd3.json and https://artists.proofprofile.net/proofs/artist/29bd4301-97f9-4b52-b13b-f227331d1cd3.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 0x6f9a2099068bf88513dfee690d756b724559b74ee3017748f94b646c3fdbf528. 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/USA370693305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83195c7065d7c2dd42e11586d7a1d2b44e40ec5cb9d1f7f751172617540b36c. 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/USA370693306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310821f43de84d9b3ccd91ad1238608b9728995d0b28308ded219d35509de8c. 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/USA370693313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c56506f0f5919839808991c228890af4185e0e9ffa88c47b2fb972c9f051db4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA370516581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a83b6f7b64c5e6e95b65651e821614d218ae45b32d22a8572e3647d6951a2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:37Z), 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/USA370516582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8bf5f7490c4424224f9d03a5d668350aea7c5b79d1dae57e0a8715a2d963d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA370516585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80345995e817ff9f7749cb0d9771d0f408b28a9db7707ea5090f627baa393751. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA370516586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e10d8a08dd6b8f7485f3b869d60ecdc2baa4708228bea6483d2269b89edf8c. 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/QZMEM2233646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012951f112c18d49429cb2ee0ce8f6ee9e83e1e2778fa29287d87262a4acdec. 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/US2420708301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf18fd2fc2a9c30cad457ea5d5846ae1c8a39c3030899cc729501a90a9cb13e. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/US2420708302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2e4d8f92105dfe2fa216aeba4bf7817cff6af88571916ab789bcd7af829dd9. 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/US2420708304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342cac6b153579580ae2b405308d74ddf92ce5deb505a3522fc76d3627805f5c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US2420708306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4172443a0ad2f1aedbf2f11f147024a8985b5f89af528dce7fdd4ef1e81875b0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:39Z), 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/US2420708310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac20ec26eb36a8c1fb56c561c9b1a4ca7f8054278992a28f5c39808ac5988d. 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/US2420708314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb6b7a28b3bf473c1c2e9be5249c1a73f8870f69466c87965980a407f2a843. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:47Z), 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/US2421015501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759de12b69bf33b9a1472c070a9d8fc066ce772de16f3df474cdb131224f777. 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/US2421015502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d97136284a8777d36e1180072ab31147557e64cdfc182490a35b533cac52aa. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:43:40Z), 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/US2421015504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14630f2d92a7d062559674993b60f9f3a99f4801cf57abd0fd453f14225d500. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/US2421015505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb571565b3a614912f4dffc62ecf5469d39805505d8d875f656e330fc3c47f2ae. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/US2421015507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe375a7d1cc32a05fd4442dba3ed573af0d8905662e55299fbce08687fb06de6. 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/QZ9JZ1719025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e1b774c7380cf52007a2dca341a9734ccc59b65a50b39a614982615c95833c. 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/QZ9JZ1719026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d7d27b02f33cb68e6e90289268ed255bb9e8ae7983faa66ab9ade1e5b1c39. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZ9JZ1719027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77afe8e03b4e5babe3820b505a4f17fbdc2740f8643e470d2a4f176d195ec2bb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:30Z), 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/QZ9JZ1719030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478e5f15ef838d739058b5ba28f3761807eb08dce9e972baadda990a99216df1. 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/QZ9JZ1719032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bb2bb64c5afa2137edb18e9bea2e599ac1cc9e548371c8899b833e9d5c2290. 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/QZ9JZ1719035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3e6d20476e28407113092c224280b66b8aca373d82497b1f9f32b90e9ae69. 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/QZTB52405593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4af69a5572c6fbc21d914ef7af29eda0f63b9e6ba2cb110c9ffec940dfbdc9b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB52419078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f6e4a71769024c29b612c1f59353021fa1bb67bade9b63d92caf46bbb22c68. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB52419080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a012004b90182925270f3eacf9495b30a0dc31efb2184254c1315ea17732e. 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/QZTB52419083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017b217133025166203fca38c702af2888b7013cc56bbaa868e61409db7d96b5. 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/QZTB52419084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4516f5786d2d820e131dad306d94e050413130d3156db90bca3b1d99c25f556a. 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/QZTB52419085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b38411d6bc94bff45890451225754139da82e82e699dedbbbe4d8207159040e. 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/QZTB52419086.