Wels (; Central Bavarian: Wös) is a city in Upper Austria, on the Traun River near Linz. It is the county seat of Wels-Land, and with a population of 65,482 (January 2025), the eighth largest city in
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 0x7a1676d2a21e56840a4a1a61250e2b3e495f2381a629d5eff0e200e0167fef4a. 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/848b1c01-f9ae-45c8-9d7d-fbdd59457c0f.json and https://artists.proofprofile.net/proofs/artist/848b1c01-f9ae-45c8-9d7d-fbdd59457c0f.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 0x18b6815613d9152c19cb6c2e811ca55842779df4500ad8ebd64b2cce5021a0c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKU932319440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541b3b9c63e6151cb9f0c81bcfab164cff212b34b5d042e1671dd4fd9458dac. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/UKR6V2305416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7383c1342d12e75cbba309620fa612fed1348b62c3d9195325f0b53da502f7a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUAGT2340884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950321822e917a9a11c52e68abdbfb321bdbe6b9b2e92a2ecd846ed0f9d66c5. 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/UKEX32420821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09b2883b0ca3271ddd4281378804e43504c64712da91df60d587e1905a1f3e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/UKEX32428569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e02d1c568faab8618b5869ac97b7f01f28fba9733d26b60fa7dc4dc52be780. 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/QMFME2460792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065701ed43435f0507b4e1ec88f12a19b30f24686c07499927c04b158f41c4df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2454992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e2df7e6c16f3659ab3f8ad62a01acc87f557ac38a21a1c1832999ffa61923e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TX2501188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d7c3908ca07acfd167446b966b69dd3c8e64485d71a6d385afba0d93fa352. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/RUB422500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17eb9f35d43c32e750aa65dfcf1be92279c0cf0551721b8056fa4e3b73fb540. 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/RUB422500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd996c097476179d0e71b25879b34ebd4b38f7d20c407cea8b7928ea0fbae151b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6P42507280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dca37811b65e24ad6249bea025eb913441fbb5935a9da99c51d4a605d8fa14. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92592187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f55f480e5e97aa5dbf9da6be5d9752eaed5e543dea3eafab343e42b4fa98e9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFME2580726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b9939d8e929520ae935189f3692367913b43658d64263c8f724e43700e5ea. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QMFME2580727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec40d3f11990ec1b9d7b68e8ddc03bc38a732b004f0bbdbcbb466c083ea2f70. 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/UKEX32500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1424ecc3abc1538575e00ff1809def46057ab992d213938339886ee5ac1be389. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKEX32500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08de6d6526bfdd842018b777799d880c1c5038238c66d4433e39f1253821cc6d. 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/UKEX32500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fde3f6126d1aa0adf65ef29ac0343a642c24cb932a3b78dee987230232c8cb. 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/UKEX32500338.