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 0x50007fc9254c2ebd23b81f78b1b01db9c142497259850d1d63c2c91cff5133e8. 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/527b4e6d-2393-436b-95c9-f466cf885639.json and https://artists.proofprofile.net/proofs/artist/527b4e6d-2393-436b-95c9-f466cf885639.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 0xe38d33f661b344f0bf2699dfdbddaba780199d375b9aa23c40096163f236e8e1. 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/CA5KR0012457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d253bc6b22dcc474519aa65df6153bafc971e244c1b2331dc612aff5587a67. 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/CA5KR0012458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc00075da9ca15a56b5d0eb97229b8b0b4f1c3c38e3e684bc656861b7b7787c. 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/CA5KR0012459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757873715308b9da6f75a255c2dacac9855352b97d11f335cf0fee2e36570eba. 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/CA5KR0012460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba3a669b115573974bf19259c4f4c3f444384a9609c0fdeebae96aceeed9685. 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/CA5KR0012461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944692d3265e7b8530f1d631668e4de93e66b43a9eef5cdce26033a645b4dce. 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/QZDA42037057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe207c92234d3f1d53d31ee6185b492dd439dc3c632b0a029acc4b3808926b07. 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/QZDA42037058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec07ecc1818d220abb3352fcb7bc9e2c60ae13986af45840703359eb157ffd5. 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/QZDA42037059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb168db6fc2c0b6cca1dc63c9f8346f3b3d76b87e476c965817ee733bbcc473. 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/QZDA42037060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1a2254840c53cf80f356ff2c4912972f95838357ee28eb5d5caf4ecbd9608e. 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/QZDA42037061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd201436e3bb90778d5ab1e0747debadb69d82dd6023d7772f60fdc6f915bad. 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/QZDA42037062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5084cf8695a877adf3222959c04d8ee83d1e35f1c608bc3c9f1e5294018b898. 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/QZDA42037063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fb30791bc9f440ba5f6e0785d91b69c5eacd64f3a4247cfc60d2f0489559dc. 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/GBLV62103179.
Lofi Girl – chill beats for LEGO building
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36af997bcafc9099aa3ac225a7dd488040b946ab67519efd91db549cbaed48. 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/UKZGC2306977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b0f2fc3643ba7d5d15067d2805814d53104c47314ce2a60212a24646e817d. 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/NL4YD2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078e81a71fd30697683224de3c0e0f52cfdab1945518b71711226b3bef28b19a. 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/GBKQU2129379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638f0b5848632f873660d08efa74bfa9ca8e14c5ca26d2af76a4fccbf1d4d8cd. 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/GBKQU2068326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf7a2fc7ed6bd99d34813eab0d3964646a6e9fca314e96f0c6e429f505f08c. 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/GBKQU2107939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa513ec938901dbf452a0b502710486596a5969cda686370617f44f190643b7. 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/GBLV62127942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292d058e0801fe18583fecb3da52b51bc25ee84296ac554882ddfd5ae7a4fc9e. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBKQU2129378.
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