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 0x3863687dc30e74f44d84aea9359ee0bee6a4b461d71c1764cc10b9243d07240b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4093db39-30b0-43cc-bbfb-ca0760789d34.json and https://artists.proofprofile.net/proofs/artist/4093db39-30b0-43cc-bbfb-ca0760789d34.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 0xd8699150c6da3d2a15058c44ea6bbb6c733c0248292d3027cc2d48034579a9d0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:47Z), 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/SE4VM1800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258984e03d91623b31c9b9fe9361d76c910f70846b69a1aded6fee3e602e3ac2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:06Z), 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/SE4VM2000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40c75605d3c4518b60073f41f92f3427837a89b189a1ddf5f0b1d0770ff880. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:06Z), 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/SE4VM2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666e074d57ddec5407f9570b1d1f311948f1f80528a966b09dcf4861f825abb. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/SE4VM2100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530f36d841619b82928b595c10d320c827632e0173b89adf5d2f19492f9e1ec8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE4VM2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5111777610f6f0b7970b4343289f67bdeb4ee62f41577d64f50bf1f0e506311e. 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/SE37O2300701.
Vanishing Point / Fractal Vision - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776fb6c4ba9316bcf2ee4a74a88d4f0f0213cdc33e6a8b5c839d802d91bbf163. 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/AUXN21800173.
Scandinavian Swords IIII: Atlas of Visions Pt. I & II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252fbfffb0f4f761398f44116e97f501df2939e8256455878d18f59e31a09e3. 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/SE4VM2000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c4e97b041ccc7ea060b7e2c227823d4accc9b8b58ae4801df145ed3bb847f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZMHN2456272.
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