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 0x8165cd89508a6f03a2e54b886155d93bed9da1b64c3cabb549daa60bb4dd85c5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea3aae05-f6a2-4b27-9327-b91f866540d3.json and https://artists.proofprofile.net/proofs/artist/ea3aae05-f6a2-4b27-9327-b91f866540d3.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 0x68030f5f00b3ac5354bdf32d01a95d6c52bb600a5761fa70278c634d17d66d9d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:04Z), 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/QZARB1876656.
Crosshatching Holographs of a Cityscape (Antiopus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3871ad7e2211ed747f692b724e976bfa007607d7094c339032c53b4cf17ac219. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN52075611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44610255f9950c8aefec9d5134c46a6bb0a067c10cdc9ceba1bb20d4f9761f72. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:10Z), 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/QZHN52075612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb2f7128c529d3e5eb15281a5a0826ce5b4caeae2d605dfa2cde5c336931c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:11Z), 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/QZHN52075613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0572fdaa88a28c242282b220fe592dfb470be6501eea57127a979932594281d5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN52075615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440dcf65e8e2e0b3a30860f59385665e0f6a185fa090c4b38e081abe42063db1. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:31:39Z), 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/QZHN52075617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208bb36ab150f61d625bacafcb1551397fa20e0d6cffe9f92660dd116f2dba5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZFYW2099820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae219e03842ed876c9815009d2849b3b9c0633eef946f81cef3a5ad0fbd084f4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN52075620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe9c10f93feb05288616320ac2bfb833072e7025bc90263b37da55a578c878. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/QZK6Q2134142.
Live @ Devotion X Mecha Yuri: Summer Of Love
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94d9e3c71d406675861c49411c7a53e9e318be06142d216a29beecd1697f1fd. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:48:05Z), 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/QZNWT2401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed61a808313815f0da4e082b31fd326b27e1f585958a82149ad22998e6b3165. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:52Z), 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/QZWFR2474054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910cc13ae562c5b66429f26b4a780e7715a8489123e1deb5f52ba308e022303. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFR2474055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f427a848224dd7edff83c2d2b98151402025770b01c8f06ff6f43541d6787b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFR2474059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd682037ba32ef27a63617d543b23cfdddbca2d37d85f2d9f4c93ff50db3424e7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:36:54Z), 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/QZWFR2474062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8490fab2276ee3894f65e71a2ef8e0c1ddeb710a4851c5985df6da6db8dd46b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN92502015.