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 0xfefeee7256ecb9bb20915574a0188bdbcc7270198e60f3963158c72045c7d6ab. 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/641f46df-6a7f-4a2d-8fb9-30bdfe269fb8.json and https://artists.proofprofile.net/proofs/artist/641f46df-6a7f-4a2d-8fb9-30bdfe269fb8.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 0xc9f4c81e29bae07dab8522bf25e30966ebb215b38fed26b44b82954703818457. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA341679730.
I say 'Ya!' you say 'Yeah'! Duet with Lyn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d2d5d5fb40d97d05294c6170ef6d09b4b6a6e81169516452a73278932e13fe. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/KRA381201496.
Personal Taste (Original Television Soundtrack) Pt. 4 - The wing named you
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a55025307531acdfb9cfa6f199c44c605a3c621b172973310ea9e89b473d5f. 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/KRB921933983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc467610e184b217ec1e9dcfb672e3d959efa69fa89a3bee65fa6dc8ff6fb4dba. 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/KRB921933984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3087200858f635c42a9d612d0927dcb5e1477ba3d9caf486be62fc12a4e2c3. 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/KRB921933987.
Warrior Baek Dong Soo, Pt. 6 (Original Television Soundtrack)
Warrior Baek Dong Soo PART6 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aba2971bd63758ce81f95643aa9303d1e55f867478f08f3945d79a1078d215. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZEKE1808385.
Warrior Baek Dong Soo Special (Original Television Soundtrack)
Warrior Baek Dong Soo OST SPECIAL (Soundtrack)
직장의 신 (Original Television Soundtrack) Pt. 3
HITMAN PROJECT #4 : A Tribute To the Hitman,David Foster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e236e4270a18b426030d77e4fb777533f4a207add8bb82d832363f01afc20f3. 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/KRA491301233.
Diary of a Night Watchman Original Soundtrack (Part 1)
My Lovely Girl (Original Television Soundtrack), Pt. 4
My Lovely Girl (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd38f69b6a533d16ee0bdfaa3cf00d8c9ef85850d191a0f2d10245a383c13696. 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/KRB921934006.
Darling U [From "Oh My Venus (Original Television Soundtrack), Pt. 2"]
Sing For You - Last Story - Wat else needs to be said
Backstreet Rookie (Original Television Soundtrack), Pt.3
She Would Never Know (Original Television Soundtrack) Pt. 4
오늘의 웹툰 (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60894da98a1dbf81866caa0ec51638dbab902d6e6a7c60016672f2e1748d6f50. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/KSA012182112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b68888eb714fd1b220c17534d1d8c178eeb02ee645912fab4976abfbf3188f. 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/KRA382103832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9a887c9f3214118c5337d15d0ced8ba833ea0576ad52028468989bf1900572. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/KRA382103833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f7b3426dc86336a8923863ba3d346adce964e67c0d5d254a32bbc7579be4c. 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/KRA341558644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6aa0def7580b3ede3d2e92f02761dbe22c5d392c7a212bf6afecf99c7135d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRA341543470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5529bbf224e325f12c7fa89d6ab6c38374ab04239271cb5cbd02173d6c602a69. 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/KRA341650521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670bbbcc8ef5358891cb7d9c750024ed3206f8b95e3b835bcacbf7b652f6edb. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRA382103834.
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 0x837a21de54e7bc65ea566a5cbdccbca0098152767dd0b9f323d3da31664cde99. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/KRA381900896.