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 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 0x74fe4217c050c845e42fee0b5c06ae6f8b8d5006fc5948272aea387d062acf61. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8a2454f-993b-498d-b1ea-eb7510549039.json and https://artists.proofprofile.net/proofs/artist/f8a2454f-993b-498d-b1ea-eb7510549039.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 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 0xb915fc08ce98cae3f7b63b65204b71388ae5298d48c6f3d807a122ee0ea9be7f. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/GBWUL1917448.
Estrex Humano - Damon Jee & Ravintsara Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e17b7d0f6f558ede6a6c346317511d9c48645b5704a448018f836bea62fa9fc. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBWUL1917455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c112e7bebd6df10124360b1384e90fc8e043f4da0896718c95a5cf74b3be575. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBWUL1917460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855607d8389b0459e4f8bcf56039464c4e1edce73e406df642d32d9035f577a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2095289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c51b75c81b29700db6f025c90af720e8eee03007d8df068579fcfb2b17733. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLV62308370.
HARD FIVE: A Five Year Duro Retrospective
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73044558f790acfdb76a4a4a04503f503b827a7d0ea5c121ddcffab6c8834626. 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/UKN6K2402048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff69ba8a7c370b22e1c77115a4ef3a9b605a8545ba7945a1fede0f1b5220d77a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2373039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490e61a42c7fd156fb191763b826eb9abe21a53964b2898b54221705b28e6568. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CA5KR2373040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56cb78cfc15686d6a47bc077e5299a0428f1d4a35f957135ca83c32ef2d308. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CA5KR2373041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666e7480e8e6f8b647a769454e0d3826feb06402a24d1b6673e3c96ee2a1796. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5FN2137628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35e430968b5e34b9b8cb64213421b4f385672db5743f2fbf21513c2331abc6a. 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/QZ5FN2137643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2bb97effe960efd6c98f54d554df787e45b5b92c261296d15ce70788ffc6b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZG2X2401067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a26cb26d96bb3fae17e6abb5dfe90fa80a996e865651980ff8be5ff382faa. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLRD52353005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a98309a56409d6951a47336a4a561999f45437be7a0c4d75d55a96fc8c980. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLRD52353009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4631cb49493af91e646b59d4a3a8a5b8032072dd1559e41af87219e6d4d96a90. 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/NLRD52353011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79d8c51fb63fd8d27e506ac434fd9eb7ef20a87f1c3325058a530fcb62f479. 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/NLRD52353015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55bb8e465cf26818b55ea9e55cfc924ba593bf4e3cea5d735233726075bc35a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NLRD52353021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c7cbbaaaadf88473da8aad34e0a2b5234a217743dfc7b265ace6015a8a6828. 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/NLRD52353026.
Sonido Clandestino - Hyper Trvshit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb02ff2fed792c05fcd1800686715960f5e598e484e51c61c9aa41ba457e76. 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/CA5KR2320359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2343c41ab238864b86f05d1ebbcbd0cd4ccb2257b1de5e21ec0133a0fadd1. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/UKN6K2402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccf0f75c24655d78afdf1a775005a6f9db7a69b122acc970b040b0b240b040c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USLZJ2438793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7862b56f03b3be23fe9987a97befe31b13bfbd07194dc4529464762329ffc6. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USLZJ2438794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3211e5e99154a9d6906d47278a76ef311d6a324b92c439fa52aaf61f9abaffbc. 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/QZ5FN2240310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aeb10954feb9877a1995e3ffb99dd12ce990e099f5fe0eccbe5d532a776db6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5FN2238668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb289d8f727205e6585c74c40add7ef2c076a38b6f87518bea1086e23cae49060. 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/QZ5FN2240331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14a0ad656fa415eb8a32d9361edb8dda40471faa7b4e7ec3ddb433c4606aa0c. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBKQU2246001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3f47c0d90600eb083255a29e4769d62adab8bc60ee1cddd0d7e2a08f241b4. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU2246003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe920d417b99282935664fc8b567f242615d3776bde84d4a0b1848b508395f70d. 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/GBLV62021363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ab757bfb58326468f7e280988e5e108fd5b69f633e2f895bd45492fe22ec45. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEH742176637.
Me Voy de la Ciudad (Undefined Pattern Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ac090de40eca87345e9165291486f2bc90c468a7e62b4ae889af8c6b09d4cc. 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/USCGJ2191699.