Marian Hill is an American electronic music duo from Philadelphia consisting of record producer Jeremy Lloyd and singer Samantha Gongol. The duo released their debut EP, Play, in 2014, and released t
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 0x3c6806ac41d13c83534e7989f6227e0ede7b21b708c8a2db808ad09b64071fba. 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/36deeed7-c2f9-4e92-86a8-0eaf86dbda26.json and https://artists.proofprofile.net/proofs/artist/36deeed7-c2f9-4e92-86a8-0eaf86dbda26.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 0x2cc72310fa2acbb70ba85705cafdbc319f41dd41be833bfa06e59e78a56308f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHR11838862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ddeca7129068207ee6a1708fc396d126b7635e5b612c8501872bf434ccdbd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHR11838987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e51a52bae5a80c8a764094f5540b5bf2a7bd3a17c3a468c8066a181f6871f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHR11839032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8f58e1cfb73aec226649821e1a19de7adaa2e5a3c4e5e61e5bb4a2d39429e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHR11839033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c7bfa6aba45ba33fb83f6a6b85745a914789305f197e8d7a808f1684c23fd4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHR11839034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cb1d732f76f9a00c4b1b008520a5584f391bf50d7cb4507c74cd7ffbd26c2f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1978415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3c6c0fd28800bf7adf28e2f499bbb3cb01df01388e92eaf304bb5a7d3a116e. 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/TCACA1468582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1460a950b4cc2ec21f361e53c8891575ff630134471219a17b579b82b755b7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROROT1532201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95823ada1cf3d5e5bda838244aaabae183d80e9f274d093df34ba19425627317. 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/ROROT1432201.
oOo that's my type (feat. Yung Baby Tate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c5836dd24d805d8b9c7a9be0119e4c66ef5e22e0d5e65565fcf460a030a13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ47A2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca90ed3de0b939d55b5f743e74949642568e685cdf77bc8317a2e455966fe4bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71703692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bbfa3477f777261859cfe3be48a5aa694998760e1ce3b21363e744bffa7935. 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/QZ47A2200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad33219f950f2f0bc813321c6d7e5f07b14a9ee4b8371236ba17be2b1c970af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71615818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcddf24ad5a56806783ccfd91039cf3392534be79925ae2013fff09227862562. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM72000642.
Got It - From "Jem And The Holograms" Soundtrack
Jem And The Holograms (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01172177b35a95c3d07fcd60f8cae036809c9ac705c9c96d8150ee6835b888ec. 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/USUM71501555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3d70ec996f51c97f104b183b269108e4d5f2c53ae698825b7bb8e61af54e0f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUM71601627.
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