Toothgrinder is an American progressive metal band from Asbury Park, New Jersey. History Original members Wills Weller, Justin Matthews, Matt Arensdorf, Jason Goss, and Matt Mielke met during high
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 0x9b4866e16ac55713c3221655ee580866c7e6781fae762ada4bfc2863bbc6e6df. 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/b33535d7-8108-4cf2-9c56-2de927845900.json and https://artists.proofprofile.net/proofs/artist/b33535d7-8108-4cf2-9c56-2de927845900.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 0x68dad5cc64a8ae43939ba7efa1b53d494c24245925634715931e0659bf1b47e7. 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/GBUM71903602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f41b8bc04d51a853cece7f55706be977d7c4b7030b25abe48b894c42cc23215. 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/GBUM71903604.
too soft for the scene, TOO MEAN FOR THE GREEN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ead58941b40f5ebaee53b3c261b3db4e62bfd587e5b9f8d112335e58ca9de38. 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/GBUM71903612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0697b325e31c88c016e9f921282e7582c032cb002b858d13a1c1c06a870202. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM71903617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee4f92170bb92b987401e2527f91cd20ea7f9f80235084165f6f87da3145e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM71903619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4252a854f108f0cb275188d1512e6fb01ade16fa7bb43c990be445541058d1d6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:40Z), 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/GBUM71903600.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb3ee0e0c9cb6c35c07a9d301be4764d450fe411a8917529ecb11c920f3e30e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM71903598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1e955ec542ef543c5143e29b9170860794d0d919292342efafb1e427d2cb87. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBUM71903606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb1c27b58ad3a1d7d35355718f48dcbe06c95198feb8cf9268e825b19d960f0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBUM71903608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20191326620727a1336d800239e798a9198a71361bd867f8ff302757e10d0f4f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBUM71903610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2297f62c745421973e09b2ecd15bc754be0ac7b3a7832ad02d0b63dd44e31ed0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBUM71903615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469511a765732fc15b7d358d8a0acca4eb7aa719ca0bdb6bd4ed9e49db9e3fb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM71703427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0716c37e97ebccd33d118d34819e8fc0d18daba6ca3e02cdfe57d436f1590dc1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71703917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aadce8c5de914c2d3d4ab056d2c5c764d4e99b4fb36d649d8dc154a27a5444. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM71703429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88adc851882533dbf129475b6cab8270cd643a05dfc5bbb15b7afed92182bec0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM71703430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3be29387a33305e31948a61a4c487762fb5a4bc913c9878b240ffa49404bf96. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM71703432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2558ccc7f8d1c15913c547630637b838ffa0523f8bed7c17538de3a09f7ac4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM71703433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2528a5bfbad09898b1880ef57b0ce11bf3b6be590caa4034faf4a581ab5fe63. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBUM71703434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c5876b68da4c641d6f13bee79795eabd136e5bc7c41d711ef9e6714f6e0b1. 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/GBUM71703436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1a68853fb421831f85627d26db144b7b635ce83b9a0034204fa8ce374a0c38. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM71703435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dc83eda1a532bf99742179c8449b79f560adf91be6428d222a09a16243a313. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBUM71703437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee36294eb19d8a10d90340a52a278b842042b14ac07167bb122946269c1876. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/GBUM71703431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7740c7c9515d2435d6b4ab1c9526e43209a64d6b410db41f48f667026623c10. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBUM71703428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6d95589ea2f11ab4989f989261563e63fbb9a53ac37be115089be1e8e9b3d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBUM71703916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2892d76b34dfcd339c8ec7c46f0d18697e964e97a2b356b43b01c7ce8ee35909. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM71504301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecd7c0f58c853006cac5dd66e493ba67bdb0e43ebb5338a4a29e3cbdd265667. 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/GBUM71504302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0e44df10660ef8e4c6111b3cd5c567978f382dc9d4c85f7d2759d54dea4ce7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM71504307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc8a27bf3357f6e99839bb4a7e0e4de950f5a290a9f52110754d373fd58fd9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71504305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3497f96859049dddcfc4029041837d417be15b034e77fdd79470300f640bb70. 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/GBUM71504312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6184f7ad836b793320f20e7a9c5022850a45c77cecd9791788be660ca7205e97. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBUM71504306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf590d60508166e1ef738682d4cbfd27e41bea278fec838453b295e86a228a24. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBUM71504303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99e8a0db5a18aa68362735a5af044b97122ca8f162c432fe5652dcc12da63ea. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/GBUM71504304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10a878a98ca4548b3e33d6267ecf0ec5d6b91aea00e5d656efa0364812f477f. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBUM71504308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab2d6bc5557c9195b8ab2167a999ebdc396831ce2898405ad747a00989140f7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBUM71504309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728239837a7533144de4e0baab45c414cabf448e742ba2729ac1bc38abd05f8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBUM71504310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a23d55ccbbbfcd2c088788def763db786d5fe8802be06b87f1054259e12f34e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBUM71504311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685819d7576f75c07b8e22cd3262b937a148c955f8622bce188a1d052504fc3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71805299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd147e5f89515b30bf2bbc494c9ca531eefd31a80f5bc56814eb77940767ad36a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBUM71801154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50d727cc80addf100628d0333215ec8ece5958c46ee5a41aa4626a91a6d78e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM71415426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2c2ad92329ec8e79f44e00d8d91830ef925a54a8e11102b9239fad67ea6639. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USUM71415425.
Polar Complex: Dejection And Despondency
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5714fe7e27a941c538ff8a57c895b65897f421c77d49ff72f9f43ff205660c. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USUM71415427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e5406a224130e2b972b513984798e46fca25b5f8ee29044474f66977351374. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUM71415428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b032648876236a8879360ec29e95a55a6b3d94c1fd34422b31f695f440396c6. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USUM71415429.