E'Last (, pronounced "El-Last" and commonly stylized as E'LAST), previously known as EBoyz (), is a South Korean boy band formed by E Entertainment. The group is composed of seven members: Rano, Choi
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 0xf7369577c1f30f044e81f7af0b93ed232c1a209e705fec39cc4602b3590e91e9. 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/a9924621-2762-48b9-ab5a-34c2a4ddbe98.json and https://artists.proofprofile.net/proofs/artist/a9924621-2762-48b9-ab5a-34c2a4ddbe98.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 0xfff483ca8f68bfc9e38ba70e2c17bcd59a747bd38b9f8a94af736bfdf55beb98. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:09Z), 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/KRA382001896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805daa2c9ad15f1d89d156799704f4c420cd394641c14c4d40f18724d940bdf. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:01Z), 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/KRA382001898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82fdc0b568f3ad3c8653212f20f8b42a8103f6436b833b294254b3922ad526c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/KRA382001899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412a35e1b2298cb68fcef74525b0c6892fe292fad13208e06afc09d6a5f2b1ac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:01Z), 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/KRA382001900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d70e39a77d8088109cc131e3cc0a97c86b2e68818e482e78e98030d6567cde0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRA382006348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f3eee613849615c0bdb01428b8062302171294288b66aac43acfcc1d895cb2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRA382006351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f745aabf7606fcb3886f4dc5dd0dd9042b4cebb485c8046a072c5a885276c1a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KRA382006352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b3148358fc525977d119f760be3e4fb3c3da8f3b4070a8ced7f2fed588769. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/KSA012156311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d8ed41c32e91c5d93592bbcee28165eba5a6e5488d7aaac8b25cd81af9b700. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/KSA012156314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03386e48d8ff895411ab971789c85f344aa4df5ed82c3a343bc135368d5ca8f1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KSA012156316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c7d0e8130aa95fba8219618c5ae828c18bb8e390de93c31a877a0e4c3caa44. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KRNAR2341585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998072a8269b9517b487a244f269a0e0b752ae58f8b3fa2401abdf59448c19a9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRNAR2341586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5959d5eaac51aabf1225e188269185fde047a8e626c217d0b8f6a75d18ef3233. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KRNAR2341587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eafc9a32acc6c144ee8103358fdfcfd0c0ea8e764c9ffd9f6acb80dbc3705f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/KRMIM2331922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f97b586936ba274ea11d1ba57c176c4ec0bb21cdd10a3d347dcb9f7bccb2e1d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/KRMIM2429880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afb200fc08e66f8d95aaed3e03115ad60327f66c6756f82832e66aee830e41d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRMIM2429882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d002b05b484a8f5a14b3fd7b8b9940312ec6e5d82ef78d78b46e4b32879563. 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/KRMIM2429883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb205bf7c5159afc45241f7366d1e08ce11bd906dd106d8e2a31223aa0e57a30. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/KRMIM2429886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376479329e38de6d4a95f0aed1085333669ef315fc092f4768bd82720fbc46c6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:14Z), 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/KRMIM2429887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc120a96759e1f952534027151aa13dc835db251b1bbec6aa1f598d3c5ae4a963. 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/KRMIM2429888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a605cadbf478ede7441ab0a68e172e8cfef7170ff3a7c4090f8080ba7aaa5e1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRMIM2429889.