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 0xa2436d47715d495dcb5baefecb276fbe6f378a837ecc2c3ebb981aa14f40af31. 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/58566de4-6e72-4c02-ac14-4884d588bb49.json and https://artists.proofprofile.net/proofs/artist/58566de4-6e72-4c02-ac14-4884d588bb49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wake Me Up (feat. Jonas Frisk, Martin Olsson & Kasper Randler)
Royals (feat. Jonas Frisk, Martin Olsson & Randler Music)
The Monster (feat. Jonas Frisk, Martin Olsson & Randler Music)
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 0xbdb570a6e3df68803279ca4270492dde9108e00deb9a71cba489418d76fba77c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/UST8K1540633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f7d1baf01f40b33b994c3b316492e6617dfa86e9ebc9da76a7742daae3bf3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USE831570385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477a7803ec60b05026e5afa1e6386765bfc2ad3c582c1a24c7ba0edd5175151f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZ8LD1782779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f94132ff43567427ceee9627c9218b357020cd30d9cee4d91d52a0b7259d0c. 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/QZES71842506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cad70e0d243201519ea69c964f093173cb76a3bae7512fe7161a07251e24ec. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZGWW2033121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ad1db2548c5566fed1dff4f154fa3fae92f69468cf1722aee27776b2dd3d50. 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/QZDA42128833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037e52a6b9c50674cac061abf46d8b22a825fcb2f70ae263d544cf52b0524252. 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/UST8K1620613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d6f2abcb44b94b9b9a1b43ba82f67646c2b0799ac4db549114cf524e949f63. 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/QZNWV2197063.