thumb|right|270px|Kham province in Tibet Kham (; ) is one of the three traditional Tibetan regions, the others being Domey also known as Amdo in the northeast, and Ü-Tsang in central Tibet. The origi
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 0x5071ef949dc9b4c93070ac0864b9ee47ec221e63f33d04bcca7a17ad5f787475. 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/62e84eb6-9b56-4233-81a9-592a90798c6f.json and https://artists.proofprofile.net/proofs/artist/62e84eb6-9b56-4233-81a9-592a90798c6f.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 0x2a4beff0978b7f091f1f79cc5236dc2bfb73937ef135c50ca076607fe7235802. 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/USUYG1334269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d67c3ae821c4ea69d840b8a08d298c4e78fa1fa251b7489278aba9fb1d7fb92. 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/USUYG1334426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9fa6c2ac36c218a03f078048feba489b0223060d7f6a63a6676d56fd83ed3d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1334272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27eea167f9892c6e5b16d814ad2477ff2d47cf767e16ea12baca30749ad4f5e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USUYG1315573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0ce2a13d5d16654ab522e68aad7a56c1616d1cdda39600daabbff28cf772b1. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USUYG1334279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f91b2d1a21a92f5cb675d6289a4d212973ff66a0d3552c4450afb88bf564e. 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/QZQAY2475948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17bc8696ea7c118a5b5f13e9776a20cbecf87f7482011497d0c82111d0eed99. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1541487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1550e2f3a4d5f981e8b8ab01a428296729d991f95d2178ef239691979f68fe0. 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/USUYG1511559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd813418b106087750bab052e9811f8dea5c7d1df2c96004c417d81189b14900a. 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/USUYG1502560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a771bc6fbad4c0095174087006ee656fb516b9b66e4537cbe123601a90b319. 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/GBWUL2231586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc005ae0450f1d1ff90c7a11864e1e3e24256bc3654e2fcec307787adc4e5067. 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/GBWUL2231588.
PROBLEMATIC (Remix) [feat. Travis Hobson]
PROBLEMATIC (feat. Travis Hobson) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b7855e657f194d155b7e5d948eba6b0a734a74d7051522ee9ae77887f9a04f. 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/USUYG1419311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18773ce0dbdb5810c000477e70399d5e8f5aa86367428d7fa7c85bec83e8acbc. 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/QZS7J2117519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69071256216a3d17aa17a4c45743fb2d69fd4b0f0610eaeec469189e203a1171. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUYG1313158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86335825eb71043b6c637ae49854a86aab0939ef3d61e74bcd9b250217249e20. 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/QZ8LD1779321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73685e87c3474a24af4e77eeca74eed90ee859361892f6ade59876f30bc395a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ8LD1779323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610acd43728818492e410ff92f9d551f3505358e184c3478ceb563375860e420. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZ8LD1779324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f38213e4aaa84e74c12ae822c994fe20668fbdb5a48dc46238400772f537591. 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/QZHNC1983886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e10789c8c0eb5a05fef2c6af6b0bdb1c5483fa5bed8b3b8e24fe05e4d87db. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHNC1983900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad1caad61d6e7342a20ed06c1c8566d8a6281c470f768042189816f37676af4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHNC1983887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef428697906695ecaa3baa9eee0170be3917017fa0a5b6fa7cc3bb17f5d78ba. 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/QZK6Q1997911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eca1b9e40ad53b5e1dd5000dd97e7f82bc6cab27b2e038ac880d9dfabf7ab07. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6Q1997912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648ce29b8793f32fa376ef9ec68fa82938fc87dcbb02de534a2630948537bb7b. 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/QZTL92194839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa2a06ea69936bda7109acd7698612e80352a4f4b314ead4b7110ddc0f9aab9. 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/QZTL92191704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64878832dfc2d9b5ec7c7a8329df17cfc7be6b354d4cdd0a9e49c8e10214db88. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES72151217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3502730493186cbaf129032fbb0d3190e8c8ddc355f005554b7886fe0deb8d2. 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/QZES72151219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af5189b1771dae178ce5165ceec44e31b65b60569979438c906b55f25e53eb. 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/QZES72151218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca1761556ff21181b1318bdec526abd5a21317f40dd85482c5ce1d88e51e892. 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/QZ8LD1915050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57cd0bb4402c22ddc1865c40388f5d39a9f7e02a46cefaab3c3363caf4555b2. 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/QZ8LD1915060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80262522ebdf99722da3e07f149f97312e5522741a78f050676b6b764409485c. 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/QZHN91914695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa075e73de508cefbbe87ce4fa83e559e71dab98ce2500acf87a19d7d89c3cd7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAEQ2045154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569356c9ef1270d2e577c0a86c6a962387f22ce2c01a23af918bbb193ac9bff. 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/QZTBD2412579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff09add84d68c506fe099e1f308d578001a1e5dc3414c971a798177b76c0edb. 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/QZWFW2470505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86335825eb71043b6c637ae49854a86aab0939ef3d61e74bcd9b250217249e20. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ8LD1779321.