The Coathangers are an American all-female punk rock/garage band from Atlanta, Georgia featuring singer/guitarist Julia Kugel-Montoya (Crook Kid Coathanger), bassist Meredith Franco (Minnie Coathanger
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 0x9e356c60681596f05a58faf35aa2868bf1e3b564ab8d8c6cdf62a7fa7501e97a. 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/4a4d6ff0-1f3f-403a-9464-aaee3468853c.json and https://artists.proofprofile.net/proofs/artist/4a4d6ff0-1f3f-403a-9464-aaee3468853c.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 0x7f2ee48370f1005c14eca977ec966198ab222355a88017f268ab0eacac02c2d0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USDHM0702294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0530d2c91bbedf7958baa89c18c1678af5de0ce940430cf2d2e01bc25cdb5. 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/USDHM0702306.
143 (Dan Deacon Remix) / Arthritis Sux (Judi Chicago Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193fea7eea9a800b31e2b89bf96e29c27582bf0d58c8fad6350c9b9e168150ed. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US33X0999803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38431f59a97335d06d6a7052b2be31bef0b86c1dd0ce61e0d145723717429e96. 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/US33X1412802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac067b593078bccca5429a505e0ede766ac24db9c9cf41fd680dad35aa2a1264. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US33X1412803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221a2b09c7574198b23b472629c183c8dcf7a401a028e07e0940ee28bcaf380. 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/US33X1412804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d484aff72732bd82cf344c428913828a9dc04cbc1ca8a23cdd6e9016f8e80db. 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/US33X1412809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf009144cbbd434c25025013b1bf89dcc30b7b5727ebd9623579b6187feacfd4. 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/US33X1412810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a17078e015099b3400425f13b8f639c6105bb1895ab533fe3d0da53c84976d. 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/US33X1413601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4b0cb1c97a2431df4cffe58822cd06f0d849ead9a8071cf1a857cac4a0129. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:37:49Z), 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/US33X1614301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6bb7db36ab39564d4f1733ee8f7700e510e406e7a8161a0cb9c9bb5d23cd3. 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/US33X1614302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36733a8a61cfdeb992da18690a5fbe8583b6933873b1fe1346deb1e92fe91b61. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/US33X1614303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e163f04971aca4126cf595d7140a53e25a281f5a7b3b2b5b82213b809513ef. 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/US33X1614304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f118ac1140c4f8f8bc4ba80ec1e7d1ba95ddcab71a5d45bd57d96cc4f7bf2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:25Z), 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/US33X1614306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974a3c34962eb6b08de7c70137047de28da5f15eb670cf0ec945eac087a2c60e. 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/US33X1916501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd79528e5f515fbe8f318b07d38995eb61efe9d3e15f20bb4df2b01f0e35388. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:42:01Z), 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/US33X1916502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea428eefc3febda3449341f2bd1c5ccf25850e17da75f15b35fe75608a48a4e. 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/US33X1916505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfdf3e5fb54514ace5b7f6e0deb2a4667a2dceecdfff4b04940af91c151b7e0. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/US33X1916507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ca9a07fc20a6b15f009a7c82f829fa0eb579bb54547fdebed9ba1552312e14. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:34Z), 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/US33X2118401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d66e16c14eb9ab4e1ddc765d50fcf694f472a912df3158653a1ff6011a4f4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:02Z), 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/US33X2118402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9030e603de7693e81e4618df24e29bd1ab24156b558c0241f451b6a108ea87e1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:44Z), 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/US33X2524601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae69f4b18e85fa07bcab36db7906011031d803cd19e2c4357519725d76a4af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEE352112573.