Sweet Sorrow may refer to Sweet Sorrow (band), South Korean vocal group Sweet Sorrow (novel), a 2019 novel by David Nicholls "Sweet Sorrow" (The Green Green Grass), a 2007 TV sitcom episode "Swee
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 0x425fdedea6d83c5fba17fd96a60de5127af56708bf5d7bb16dae57a359918472. 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/f68da5df-02f7-41b0-9acd-1abf18cf440b.json and https://artists.proofprofile.net/proofs/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b.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 0xfa135005d9f4bdd683f4e78e075d7a93be546adb2fee4907ea6a2b38979860a7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRB311210302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcd651efec07a1095e4d205a90b6c086d85255ba680c8edb407f16c4fdf44e4. 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/KRB311210303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66fdf1a1d92e252b5ff98f5c3a8cc6457367d4494f57e9f5f850c45ab3c36aa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRB311210305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aeae76a0dd388129644424416d9d3c26cab3229b29d7d741340700b3212f11. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KRB311210306.
Good for You (좋겠다) [feat. 오지은, 정준일 & Peppertones]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47988de9edfbe0579a6dbce7d8d1b391da0b25116d5590f14178a6db173db445. 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/KRB311210313.
My Husband Got a Family (Original Television Soundtrack) Pt. 1
넝쿨째 굴러온 당신 (Original Television Soundtrack) Pt. 1
넝쿨째 굴러온 당신 (Original Television Soundtrack) Part. 1
SWEET SORROW Winter Project Single Again And Again
Girl Who Sees Smell (Original Television Soundtrack), Pt.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175249eb71b548b698489bb4ede6dd283086c7e572dad6bf9e3a83f517211b3e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRA381210562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7be59f60df99a412ea10208002a26017ce36c4da47d44adb68ae04f6710f1. 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/KSA002101012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7be59f60df99a412ea10208002a26017ce36c4da47d44adb68ae04f6710f1. 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/KSA002101012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d77eda9df8046b0ed8b1e0f4eeb45823a218a16e285673b56c5410e4d85e1ec. 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/KSA002300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e670d3571ab0cb9e4e22f552776b4afe29879f0be4ff4878ff72f212dcae58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRB472001417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5588f2ebc3bed1b8c53d3edee918898a349ab6cb879f57f776dcf2868343ac. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/KSA002201878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9440133d2563a9cea0a39f5d61df21f2751279eaf4f1be5cf5ecaf8226d6223. 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/KRZ291610200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2276994e65077c55acec63351f84b387b077a469c19a5083cdf274a612a355. 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/KRA491402415.