Hard Feelings may refer to: Music Albums Hard Feelings (album), by Blessthefall, 2018 Hard Feelings, by Julie Bergan, 2020 Hard Feelings, by Major League, 2012 Songs "Hard Feelings/Loveless", by Lor
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 0xab936fd7234e28bef8378219c83cc6bccc230c00335b1a3581602d84e79aa3e7. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5477c98-8a14-4a7e-b33d-adc4bbe9c0b2.json and https://artists.proofprofile.net/proofs/artist/b5477c98-8a14-4a7e-b33d-adc4bbe9c0b2.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 0x5144a7c70b3a0482123cd22df5dd9ba505e2f4091c4920fd330b58c2b800d48f. 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/GBCEL2000566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a744e2506b31f9a482ca8bd9efc6395e3641b8243e46c922217fdf4aadf7c46. 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/GBCEL2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c14c40314af66293d80fb56e32791ae17c938bb5b751fcd3e69dea25594034c. 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/GBCEL2000561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac51428df9022da631c5c8431251f46d5b5d1da63dfb67d1fbb2a57021707b0. 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/GBCEL2000560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c14c40314af66293d80fb56e32791ae17c938bb5b751fcd3e69dea25594034c. 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/GBCEL2000561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9408cfa1bd796699eeff2ae5eb4cdac2a52dd6991fdbc61b80aa12ddc2c5f230. 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/GBCEL2000562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8feed88e98c3894dddd573b4e63465d1e5e6e2f33eb1da652dc9bae4dcb1c3. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBCEL2000564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5144a7c70b3a0482123cd22df5dd9ba505e2f4091c4920fd330b58c2b800d48f. 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/GBCEL2000566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2d4734c05a283ad01b47d2a02807d68818ea87ff0daeca3fc3c51d00b4adee. 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/GBCEL2000567.