thumb| Andreas Lang, better known by the stagename Andy Lee Lang (born Vienna 26 July 1965) is an Austrian rock'n'roll musician. He has performed with Jerry Lee Lewis, Chuck Berry, George Harrison and
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 0xf77c692268c0244bade279f395bfc07156ad890a52ef1a232557da2e6016a9a1. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e3197ea-9160-454a-a09c-a36ce9d53518.json and https://artists.proofprofile.net/proofs/artist/5e3197ea-9160-454a-a09c-a36ce9d53518.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 0x84486baf0b711af767ddcd59f6b0a293052c2b1d0e50b6eeaaad54bc13ac8642. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AT0951000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc483d5b5d76dfa6fd193d97b3809cf609b7966c5963c1172843432b61a7c4c. 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/AT0951000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa5683e367383f0e86c2d57cc18628dda462fccd3045420e0e1a15013940488. 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/AT0951000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03b49fc224ca16255d4ab25d8f6ca48ea2dbb7579d981288996ced67fc9ad05. 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/AT0951000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ec10ea13692bf31d02dbe9cda924ecbfa8b391359af3c8f074dcad1bb11cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AT0951000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e955c9ba309f0e095949cd9606560f94b1c4ae6186af76ef9f38fb22f2ddcb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AT0951000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c95615517cc5f7e5979cc88f818e929cf1a6f1092addcd4a562ae6b5da372da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AT0951000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc5b772955ec5a5dc753c87fe3d743973c1f04a1004b469f17945f580c3d4c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AT0951000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5525b5d1b1e329552c3f6c924ab0182612a244990cc8b89bb069ec18e897128f. 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/AT0951000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9052789e3a62b3453bc088124d3ebf7376b620c573ad5369f7c85c1b46db9e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AT0951000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361abce9bc2edb2ab9efb77508b27de80947a7c1e5405d2132fb1feba7f4674d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AT0951000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1dcfffe1488ffc3e60a64c662b7a529467b0b6a164817aed76e75fff7a1b98. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:13Z), 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/AT0951000117.
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 0xd807a46b0a96fb20f35e3d702a0c6fab93362bf7bc01356ae79ef7dd20f20b02. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/AT0951000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2623fa5e5db7f9e085131fb28007bd7e3e3c8ced5dbb201bbce5933b4c3597e. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/AT0951000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16f065efd9dbc9515b05a3a22482843079140fb39e8db1d11eb8bee4da0fc3d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AT0951000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484c15eecf19d8896beb3278625dcacefa497d33d9045923feee72ff661d1ae. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/AT0951000132.