Agust D is the debut mixtape by the South Korean rapper of the same name, better known as Suga of BTS. It was released on August 15, 2016, by Big Hit Entertainment on SoundCloud. Background and deve
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 0x630ca277a2abbaf8027f11a03cc2435ae469bdd542a340a4b73d41e268f84026. 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/ac162689-689f-45e6-8ed4-06fba1aa87d1.json and https://artists.proofprofile.net/proofs/artist/ac162689-689f-45e6-8ed4-06fba1aa87d1.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 0x765e45f7c7e07389c087adfb34f467fffc06e28552ae77ccff1825e74da01b38. 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/USA2P2310690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382b1fbddaee1163a6b2c093cd5bc1895f662539714a5a9cc2a49b503644267. 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/USA2P2310691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f43ad3459545a5da2ebd06e6a44039c3cadc77e0dfb138a18edd8f631257dd. 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/USA2P2310692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e201250f9c52fd8b33aabbda67fb487c4d8bd1a8ce9e53b2915d542f218d52. 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/USA2P2310693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdfcc3d7d3da54309047c1d5584c094a517360dda88575882aa857fa8da53a. 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/USA2P2310694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa17b22a5c00def4c699537d87636e8496adbf6d2591b2fcc8c4fa21de32e7. 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/USA2P2310695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c16963844236d752c783ac5a1c706f67fec535e58009618e108f3a384a28eae. 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/USA2P2310696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6897a375aca82557a6cac5843ee7ad19d25d1888329184520e349b712bc2c2. 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/USA2P2310697.
Snooze (feat. Ryuichi Sakamoto, WOOSUNG of The Rose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f7d51601d11cc61bd27656b48858705b54c5f6fab2fa2e171d052b1a172a03. 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/USA2P2310698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ae10603b28c590ede0772f4ae98dd2acdb73b31923f283a7805acd666146e. 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/USA2P2310699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d0fe56738384f3a72c0e5a317f6eee8902edd2a1290903f674779729ced437. 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/QM6N22036181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b464c2cbd5b6031bb8840cd91f18dbdee72f081e82573bd791586cfba1955ac. 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/QM6N22036182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0469e52a9131e9389a432f46565c653be39e30da34100a6ae4936b9a067abf98. 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/QM6N22036183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f164fa59405c6997e78531720844ecb8fbbdac9e353530c20a729f33d0a1c71. 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/QM6N22036184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a14e95581af7b7a862c3e25fc59a77d6d3f4ac41d20a9e414ac1abc44f047d. 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/QM6N22036185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088703b0427e0c4a2263974526cbf2ba3ab64fe57541388d41be408f3b24a0f. 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/QM6N22036186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffca8afad0df1d6c9a08963edb253ab9bc21f6e74f73a3eebe644a5709d8e51. 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/QM6N22036187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689cd557ab8d25b079bc7c6ad19bd896fb9d8657fbe56bea82a2a20919a67125. 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/QM6N22036188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26b71a4a8aa2127a8b4c4a1111a0fd1c8e137c333342a47beafadc8f8043ccd. 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/QM6N22036189.
Dear my friend (feat. Kim Jong Wan of NELL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c412b8023d35585b2daa5069cafbcdb7585c753bf8a222a366874f673be78. 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/QM6N22036190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1411ee46825accfbc1408bbbda46e2af29dbde7250dc99bd98083f755a2d00. 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/USA2P2316841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f6fcdec35a3e59befadb48de95d33845ade8ac75b4d5c2b5f30e87b3aa88c. 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/USA2P2316842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fed7a4f519ff59a6e1159d7b8cdb36b3bea700f3fdab157b4e59da8b2da5d6. 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/KRA381601469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1edeec354200e72b9f1b40d17f3159a393a6422016378c4d1a3098ec66cfdf. 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/KRA381601470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95299f86e719f6ad0aea52bd7106da00bc787cb5966ec5d08349f90c46c8e18c. 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/KRA381601471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc375ae685bd6132919b1809e56ca11fb56cf35c6e33d1a1a988fae59b674f. 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/KRA381601472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6ec4b6817ab71b2e56ff63a136ccc7b53ad594c1a964e718f3685533b05b2. 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/KRA381601473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097e1bf0bd8f5b7db96ba28d883f4eaa34993572488822f0bc2560eff04f652. 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/KRA381601474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b92f28a68a736ef6c918239dba95e04c73a804c64e2c00689c4d40bbd755d9. 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/KRA381601475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715840e8de903995f00977304dbb44bbfa7918b70db6cafac136954ae2f6c6f. 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/KRA381601476.