Kyle Thomas, known professionally as King Tuff, is an American musician recording on Sub Pop Records. King Tuff and his band have released several music videos and have continually toured across the U
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 0x49e5aab50d697e328d00dbfef54673f72359a079a9295d68fc75d5acd75a6c7e. 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/a261445d-6fa8-4f20-8e61-937501215ea1.json and https://artists.proofprofile.net/proofs/artist/a261445d-6fa8-4f20-8e61-937501215ea1.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 0xb37f66a87e32723f16940a3f2378a6baa4724dc8ea66a2475f63449c3329e414. 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/USA2B1301915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66977b9fa6e78e7d31a59774922de6f36236e75000362277aef3ec9fb48aa68. 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/USA2B1301916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acfffa6ba3199826ebdcdd89cf669479e99e7dd453b3a13c71bdf2837b28e33. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:05:31Z), 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/USA2B1301917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f0e70760687dfb454815daa15145429b4264273ed2439c3a89ff4a2bc2d45. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:34:39Z), 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/USA2B1301918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39119ca673510f17ac84d1390bf96121d06121118bbae10772f69c663136545. 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/USA2B1301919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda121a14525df9bb20797c7722db78ad5bc952ce471f83c0425078b2c43b629b. 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/USA2B1301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cbb52c9743e4153cb2b12cebd5305d24d5884ff659d2c7ba60c80c03add100. 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/USA2B1301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659980fba9c284c4588b38b6f40706415c9a0b943cc946859fad916d6aaf9f3. 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/USA2B1301923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef7c63f27750a8079dcbe23104a407887433762ca1cf9e93dc8a68e8e3b70fd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:13Z), 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/USA2B1301924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf134376016cb27b31ec9ee3b326987d78dacc4fee1435511c384c8a4e1cf0064. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US33X1210402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63469ff280c7ba28e2f50d0ddc3ace56d29ac610314d6aa1a9efe894b89647c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:20:54Z), 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/USSUB1297603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e58314b3f48ce8577a2564d03dd0a07b39f951f91ece0872685a71cc29734d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USSUB1297604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6fa7cf3c19a42a0f196f3481fe7b9599584784ac5e5a79995017f40f190119. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:48:49Z), 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/USSUB1297606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881bda305b8ea89e968b7b45de7e4fa409690d1cb64c87d6971c5e96cc5b6a09. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:08:43Z), 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/USSUB1297607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efcb320804077e8a8f1e425674c4975be085f94903f2bb409f3fc7e4c59e487. 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/USSUB1297608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef7378d75b72ce5f384e12e93277965b980532ae822490fd5b575205fdbccbb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USSUB1297610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1763f13e309f513200981382f23f12bce76fd208bb0765f0e88068af5b48e49b. 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/USSUB1297611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc87592843fd685ca679f8e14621002398a3b0a9df73e19d93a59a4f8f45b9c. 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/USSUB1408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3513c89b802774b469bed28487627352fdcf30141061d64212135033ce34e. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/USSUB1408005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d071d55c2c2c6c2043c0a89c480fcb1878eb3b65ae52fb6459004ebca5b149. 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/USSUB1408006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db017ddfaa1ff2a84172f7424b8c689c956e5f40b70e28ab55ca66749c6da36. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:10:57Z), 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/USSUB1408007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e32b4a1c4227f45d8d82ce21e68cdb736e0bcacb29073535376b5ac71b19a83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:18Z), 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/USSUB1408008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6d6ddd8a31d44797666ffdf2ef4d58d484174a3a27d79e39c4d4d4c81a120e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USSUB1408014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ac54723f51fdb22aa26b9d44864f6cbda847b4a1269562d229b46c27edb92. 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/USSUB1723001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde6db92adc9b6cb0a5a9bbda5cf1d389002255c4bbb614d562aaeb50ac6ac01. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USSUB1723002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa140739e132a58490671655229320c19dcddb9030d4ddc9e1cfcdb797fe145ff. 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/USSUB1723003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52c9f3bdcab17874dc3a2ebd8b702b515c2be2655bbbb02513aebe45567b0f6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USSUB1723005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9c94c8bb9c4309c4e9fa076c001ee1b8cead0a2c2482cc3c9ad66a5725ce55. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:17Z), 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/USSUB1723006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c39715d4c5bab07888d63d28e91c0d057312134607ecd0e9b3214194ee8e8c7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USSUB1723008.
Raindrop Blue (Peaking Lights Ruff and Tuff Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1262200149552a2221c4e17d7dfcd53131faba96158640d90a86fdf9344b1. 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/USSUB2035801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609e329058b69a0311f7da3cb3fa8f5848c25071d00f34d4b1ee4d93ecdeba72. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:10Z), 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/USSUB2252501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4732871e651db981fa6c9577dacdd0d521764301dc9bb1297734f9aaadee4fb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USSUB2252504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3442b7699c8fa07501fe907cf1d919e82f6ad58f7aa4985e8e5bc3ee64465dc. 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/USSUB2252505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f95441c9a7115203189edad82b001685a0450ac4a4b10d0ab2afb9f150094. 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/USSUB2252507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69059d16b05e2e82fa2893e94dc14b71975cabb192228957244ed24ca00ec62b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USSUB2252508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e4b4cec943bb88490ace940b42c584515398cbe3a8b66114c6c2e4f504b6d6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USSUB2361715.