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 0x0133176a926866cce3bd00f822f7a26fe5d1dc02d5891cacbbffa3c3432cf42d. 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/a77db8f1-1e57-42a2-b6ee-c030562e40a5.json and https://artists.proofprofile.net/proofs/artist/a77db8f1-1e57-42a2-b6ee-c030562e40a5.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 0x7e8d1b7280b6dfdad5077b985c545b0fe51cd2166d53b3b13beaee68bd83744f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRNAR1801603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cf93fa2566dc7c97ad68fb71f94b050b4e770b40ce9aa04f09aaa408997bb2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRNAR1803074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fa18a2c67fb72a5fa0e6fea4a77311b9eb641470aa7ac423fa12baafeb732e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:30Z), 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/KRNAR1803075.
소심해' 2nd Digital Single 'SOSIME' 2nd Digital Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927bb7685e3482666b51e50c1686a94c1115ccbb42906fd491113761c6a51089. 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/KRB451800644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe3d451eaa1ee29e06f5c24ae9ae9087437c8b3bf1d92eacf4c5654959840e3. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/KRB451900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e57abcd23151d713a77ceedc2c88e7a94494371f3ec413ac7e008c67d0648. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/KRB451900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ee93298026bf4d1b830be42460de1d705274aa96c3b90c2b586b6d10d23cc4. 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/KRB451900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c397de62f063d17537a6ad9fb6b6800254737ab32c9a4bed04fa3ca85cbe28. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRB452000688.
Once upon a time - Home Recording Project #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c061753316379303a039503ee6955a20e332f70d5632b7ffebcde1dec3b4b62. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:39Z), 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/KRB452000806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e96c0bb28c2831e6f8319fc03e8e414b9a31ce7145a763b5192b856d9dfad3a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:17Z), 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/KRB452100852.
24 Hours (W24 X Tenor LeeJungHyun Special Duet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706f7b6109129d32dc44cb6023cfe971ee44548e963989d323274d878b30043. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:47:35Z), 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/KRB452200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af11e1bc65e77a3af9893807d60149764b9351b4b7cebf982daf6044efaba92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRB472301608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd635afd47a7b14b02711ee4e5a3eab5e835e2c4b4613d87fb498f6138de9f. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:36Z), 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/KRB472400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917a0516795d213a27238c29526668622408e092c62e6c2ca8acb08582755e3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2449455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417ddd5a517866d697bace0761dd2cf844100dbd8e1061d993f8ba3db10cb807. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:57Z), 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/RUA1D2452927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe22e1ba6868254fc625f85e1f580b646924753533a0b79cf761f717acc05f1. 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/RUA1D2457391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4702d32b743fd2f5b7ecd42e22c1087ee1af8dec18026bd2a589848e3f98b46. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2457393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7538c3102b5498bbdadf76f17c6f3c0b1bd1a510993bfd11a4e601ca05523a35. 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/RUA1D2457395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ee04be43a4687bfbc4167c5f1040b10dbb7d9ad1ccb8d6a21ec7ae1738980. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRB472403927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda8503d9857f1c91cd405d0027f1684235d62b9dae4ed1d5901c0d60599985. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRB472500795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a76d2da85235ab8a5f67b8247ec4403165c419c2919f4641e7df34628c13e4. 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/KRB472500798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb59b77c1a37bc5bc1e61aa6b672d428230155bb0713138404140a123fb72a5e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRB472500799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd8f8d9d4e13c569d2694576551e5657c59b97a1a15d50bdf30a1643c3370f7. 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/TCAJZ2539177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd837acf05365549d410ac90d010488f8d83845f222772452d9c6f672d1583ad. 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/RUA1D2560902.