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 0x22c79ed933da1fe7c68542cd9a90d24db8f1207038960febdc74201e51b2bb82. 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/ccf6a16f-81ea-420e-9d33-170d16993d47.json and https://artists.proofprofile.net/proofs/artist/ccf6a16f-81ea-420e-9d33-170d16993d47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kim Yon Ja Solo (Kim Jeong-Il Songwriting Collection)
Best 20 Are We Breaking Up/In the Waiting
Medley of 41 Songs, the Comeplete Collection
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 0x8ecb88347748733f4dd92d0716a403e8aa596fd3699490ae926f29f1a32fa7c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA341439498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3744d00d162fceafb89b803d1bdab244e53b6ed09dfcb6883b01eadd8e2c82e. 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/KRRAR2103965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76772c8992b522d0e28e82253c11914fb88521bc885fde97647afb857caf4ac. 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/KRA381700697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799b1a1f7f9d52cd089c108edccabe23ddd639f5839f9e98d1696f75a20d4e00. 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/KRA381700829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0945b74f8cd1a1907204fbc74fb6a6384fafdf6b32e1735e1289ebcfd656905. 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/KRA381700830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fef8a2ed7faf114cfd028ae80ebb2cbef1e6e0d2934c893c365870bcd11f68. 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/KRA381700831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba5c727ff5a09b9c46621be2fcf02b428eedbb932237e84eec51b2379d31986. 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/KRA381700832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76772c8992b522d0e28e82253c11914fb88521bc885fde97647afb857caf4ac. 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/KRA381700697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f93feb2a62d95a675106fcabe4d79942ea91c68add325e2d63b462aff02f673. 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/KRA381700834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe52189dbfff5d7deb24e105eb2eb6c94e315d7bd1c4dff20a038bba6809caf. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/KRA381700835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f714460dc091b6301497fa9bc2185dd73afce23c6d0c31250461d88cacaba3f. 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/KRA381700836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4784c63f664635c048254ceccecb0c7d4a140c6d81637b2e896775e2a9c12bc. 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/KRA381700837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18c43e70b89bb01a2855b12d897620a1eaeea17f1e2d28a1852bf531a5922a. 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/KRA381700838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa15b38a07c5ea937b4311e0edaea57ba03555b548b639adbc7f0f41ab60235. 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/KRA381700839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60938a73a756125b7a0d2c3e06acf300ab1cf05395e0a7097a7b1d7f8ac3175. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/KRA381700840.
Will you go out with me - Ballad Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de0232154611e3215ece2e4d81f13f44dea65ce7f0422ead415391116814d8. 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/KRA381700841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e3662104f6f7470ab18352bbe3614204a38baf16395181de79bca6d161da9d. 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/KRA381700842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bec908e5f15801af74161a7265c561247b0df2581ed1219e58777ac75fd5e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA341785316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c344c3514affba22800944cc3342e6a5c6bdf1160d3f484424634b890b51bb2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KRA341785317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459150987bd50dea5632cd8e34f94b22a348bc8d3df3187cc7a9e164c4b8cb00. 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/KRA341785339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e325ba27fee31f2075b85a2b8033920767c7ef36a4fe914cf04ebdfcbf7d31e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KRA341785341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a0b31e4a3923e1fcb601534a46b7abba968b4d275cda5176ebe908300617f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/KRRAR1924318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e4ffb993e50ddca0fab10e2b71b192a7f820c3528a64379b963c9277e76af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRRAR1924321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d097507f84ab04e56c4983529445d4d5770c14d17e412434f7abca31d377779. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRB471701141.