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 0x74bf1bdf8b5f828f8b9aa21478d721ab7ec70292e5f317380cde4a80bde61487. 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/ca4c0b85-1aa2-4188-be0d-3d83842c3270.json and https://artists.proofprofile.net/proofs/artist/ca4c0b85-1aa2-4188-be0d-3d83842c3270.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
House of Eternity (Nichts entkommt der Zeit)
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 0xe0a35de53c5cecaa416b5f2c7d90c12a486023d19ed0d6f99720b080ab80c049. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DE1JK1953522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4d481965f24f6afdf72cbadbf066ce81d3d2652c774117abad3f771a7565e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DE1JK1953523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e022a454e27ff4ca314c33413f765d08fe54eb17ae132416e51ea928099d4. 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/DE1JK1953524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e861a60f9795ede099b3f61bf3e459ef6cdc1a5919aa58ba6a3b4173bb7ae5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:56Z), 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/DE1JK1953525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef591b782c67272e083d50e6aaec7adaf8874fbabd7ea6454dc671c14b51d3f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DE1JK1953526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab90c0ecbc719e941ac26830dcacf95ca030b4b09ff643b4e72d2a57e149eff. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:52Z), 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/DE1JK1953527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5180516652644fe4bea1f55ff58f254c01ac5524179615b2cbf5fde4d0b97. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:29:27Z), 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/DE1JK1953528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844eb8c7c6cf985729c28bcb784653fc17e9c80460b55d1ba11b2680a5530af0. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:17:56Z), 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/DE1JK1953529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25645d3aa0f405833fa712df8108d325d3739f5aa174a02c32e8ab52ec965ced. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DE1JK1953530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6396115f8b76efb5e036a6aea93242f132c2369c9e4ad0bede6e80aa9d0d11. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/DE1JK1953531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033b652f154c4ccb286715a930da141671800cd69f1f7670b48cb81d255e8ac5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:12Z), 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/DE1JK1953532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc5456a86dafde93d4a55141cd69144ec69671b895c15a7cc739450f4800861. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DE1JK1953533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd37c6c276a8cc8a9e0a66126d635e931e5a6c6f2a028933166fe91740f83f4. 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/DE1JK1953534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758a91a8ec8dd5b06aae14b745f4e1d05667db07e9cc48ea64db6dd9e1a3063e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DE1JK1953535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df751791b3a7e5bbf2ed193e0c21806bdcfe003790b2a3b41c2c86cae5f5e0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DE1JK1953536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573510efc26234a55ab0dda4f188e73ceb40a2a466bf3035e2ff5e5ba846efed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DE1JK1953537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624650c0dba58d37f7d02c66de899c2e1c3309e172386e09d93577be93816aab. 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/DE1JK1953538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d12f2aec48b3c09de7c36387b6f9d1022f8d0b56e5e71834f5628033d22941. 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/DE1JK1953539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af48439be6df2ab44167d7a750271eff9c48fce85b99a4ef097104459dd908. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:54:46Z), 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/DE1JK1953540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65234ec5819f52aa5d63b74ff2be56c5c2dc00acc53c7105c9697a2d0d214623. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DE1JK1953541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8026c332aad56a5f352d30748e906da8a177e1384e560aca091e497ad8d6660. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:16:28Z), 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/DE1JK1953542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe722c0bbe22536e3cc23d97d7f2ef6a765beb65376bf6ddcfdf3bbbce8ca8. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/DE1JK1953543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7fd31d74d13d291b61fac33173f2478390e611640d493959a390fe7e8ab597. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DE1JK1953568.