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 0x87816df2b364898c3c9174023788a3dfcb1419e0e175f05d1b91f23a9940781d. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1863ff7-0146-42ed-872d-b787416f2278.json and https://artists.proofprofile.net/proofs/artist/c1863ff7-0146-42ed-872d-b787416f2278.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 0x54e333ff82b1c43098493bed725571372fef0dfc4b836aecdfffe278fd4de290. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8LD1794751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48af27318862789327bac40f8010762493cb43eef6013632dc1da12cda4f8a3. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:59Z), 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/QZ9JZ1704788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc206f6e0080b50e832660fe98e9daeeb38e0c0cc9ea47993668a13e7fd326c6b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK1920374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2106c07a1fd37e582ca64014a9b27e76c0e0018b51b86a992b4617ee950fd7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN62056234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e89410fc2b6eb0ca1bc562b0c56da27c37b72764e5cf8ec4caccadf595a716. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFYX2163458.
Dub Master Clash - 5 Years of Clash, Vol. 3 (Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d44209608c16c0a1473204ef2535b36f6f3788e6a515af5e5c3bbefa75a0df1. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTAU2247077.
Croatian Sunrise (Vibronics Mix (Part 1&2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84038e34622fe0a6c257c42fdb1f58952da50f9bdc1069553030ea35d983a7f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZZ782446546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a1adf3c5febbab8e34126d10ea89460b055151f5d0a6a52d41913ac7691e1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFYY2515822.
Live from Switzerland at soundcheck on Subactive Sound (Unreleased)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a065b8698ae26295e4049174db578b2dd60bbe481334a8a40824432e9198370. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6L2539260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ae0d468fea3f9c89abe6854bc9cece85a8c209ad773207c1e46a5fbd1666f1. 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/QZMEM2539884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350198f7a25db327b97f716a2dfd7b186e68542b6bb4566d3280d1b0498f680f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USHM22598943.