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 0x7a953c677d782876545ef55d4f662c12a2b7cd1098471037a3e38d3aef1789ac. 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/a3e89962-796c-44aa-a61f-142a95013c0a.json and https://artists.proofprofile.net/proofs/artist/a3e89962-796c-44aa-a61f-142a95013c0a.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 0x8cd13388e33be1aa2654e1a2601f5c11fd778a781b9f3e03a6d8957d18b15574. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/HUB040300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbd70caa37585915cf850b21b4864fd0d29b1f3005347ad46583b3279ec5a2f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:27Z), 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/HUB040300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788cced430243fbaee33daeffc047a1b8f13f3a522c824e83f96edf26573a6c2. 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/HUB040300638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0466955e9146bfd9b28c57346da75a304aa6841d7f6897b1e0acb540ffea73af. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/HUB040300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799864ca8e062430017f7143fe43a1adfa8af879a745ec104e312a2cf78d5300. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/HUB040300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5c883262fe3f3f80cfe6a6ee3b9a8c3602294683b139e94512d19d4f792e0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HUB040300642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff40a1b6ab30801986f931ac4ece195f547e83872032d0dea340f978ac317ab1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HUB040300647.
Avri Phenav e lumake - Elmondom a világnak
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5044315a5297b269a859827e9dcc94c50d16033cf0f73b382a4ed2edc1cefca6. 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/HUB040801038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b42498099c4f748cf427e341bd82a33b3f1e4e43ac695c3333f110cfebf8e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/HUB040801040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962f309bd6962585c9b877c5c889b209260d81c776014e3494054a7febde87db. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/HUB040801045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a21012afcaf9523d4a92bea8f61a110648201f4ed96a728d5c7e7baf79e50b7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUB040801046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6710693e08cb54314951c63f2cfee27043c9461bfeac38b1792ef8eba5e20cc5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:12Z), 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/HUB040801047.