Lienz (; Southern Bavarian: Lianz) is a medieval town in the Austrian state of Tyrol. It is the administrative centre of the Lienz district, which covers all of East Tyrol. The municipality also inclu
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 0xe22db4d7f6286dc9ad6564bb42c01e4ce27aa6ec2b88117ef4481d4677e8025f. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b497907-8613-4bc6-b3ad-1ff2a9f8c081.json and https://artists.proofprofile.net/proofs/artist/3b497907-8613-4bc6-b3ad-1ff2a9f8c081.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 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 0x95dd125ee7d777d19951865187e933093a46d5c021103ad02b1a5341fd0a70bb. 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/QZMER2357475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99182b6bc7fbe4483f470b06256aa797a1056c3681c856314dc6ef5e6675130. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NL8RL2404619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e521aee55666908d54926f064cb7b7190cc5ab6f77ac17da40fc4782b8313d. 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/NLRD52222642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab053c78ccc947424417f4c6465b0d3672ddbce126960ef429c3a0df9cf9799. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42353674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9a147b3f7748b088cc460fc02e1aa73e29251cf006ec70ff9834cea0c08991. 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/QZK6P2136057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743e66ebd4b6638d0e6e407d51094298730af495fb406e33a3bda58c9256db5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHN52057558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a323af3635be3c05a7cf9ab086856022281289f31702e8f04b711ab97acd975. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZFYY2088036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e3462874bac5694fde96e2c79b336cb5a148dee263aabd99e2921f944df222. 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/QZK6Q1987297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c64988a3ef3511ee1be67fc379bf6ee643de3ee94ced944dc8ebbce698a27f. 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/NLS5K2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a756b96fa89e60f306c71cc4869d5e36e72c3dc13c59c1cf216743750446635. 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/QZDA52537631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809347e1fe9e64752ec696beaf4e3c208b74a84e2f54f5fae30e1a85e978e119. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAHQJ2556543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf875a971562a0dbe3e03c8b02d88d27ca5a46f2a5c022d4dc93d39fea28e30e5. 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/NL8RL2444515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0e3a8220a5bbd63776b9f71c3032faa5f00bde74e56816b1e9da012ebb562. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL8RL2436672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53860021a8004c2dd85a4291dbfcb1b76466be32376ec9712ea72b9fc0638113. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NL8RL2436671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743732b7616eafe8cd1d4a4e4de6b89f49a9e58664ac6266989d5b502a91203. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL8RL2504861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4d75febab0829480f92d2b4e9f0504ff3a13a8db7a8d7542f270c0f8b1d694. 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/TCADC1745487.