The Papar (; from Latin , via Old Irish, meaning "father" or "pope") were Irish monks who took eremitic residence in parts of Iceland before that island's habitation by the Norsemen of Scandinavia. Th
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 0xeda8b8bf3ed1f2eb8b6e9a1b2d28f32919d4065cc5ba32c5ba7921de0a65e8b1. 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/220d838d-2727-4c2c-999a-2cfe3e918838.json and https://artists.proofprofile.net/proofs/artist/220d838d-2727-4c2c-999a-2cfe3e918838.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 0x69e148656c8148720ad0554f766fd04b1c211f115883f76678707d2fc8606b81. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ISA109802801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59c734574e250cf9b8e35d9174fd5f2b4f4277e4a4807ef17a0254fedb6ebe. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ISA109802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c92da5e5fb889bb382b25f145e616ed788eeb4f2d1825b54dd0d9ed84c062b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ISA109802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3b3416318a374f46d1b3979abaa1d990daa43b44664d453a7b2dd284fb3470. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ISA100200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d85a78076e7bf136c1d7f951d22d0dc87a6affe94c819210df4d5e663b010e. 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/ISA100200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77de14396a54e07a5c98fef9e7b7a1aab299307d75fdc83986d68f83cb929496. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ISA100200705.
Brúðkaupsveisla Villa kokks og Dómhildar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024dd31e9683296248e89089074e080d428568c4abc98ed5ad8930962117df7. 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/ISA100200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5708715307d3dd73d9a4435ab5f439d68c05da32378d5fc9db9e82174e5d32bb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ISA100200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676ffed6ee7dae00e97cf1d139b11bd3587434546b40e26cda106a758d580bf8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ISA100200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa165cb786125ed849205922f97514b9b97152de2fe44707fa68f70fa70fa75. 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/ISA100200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b33b17c501e98e93f006ba51ccec77d4439768dc3aa9fb2f13a3bfcfc6ad8c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:32Z), 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/ISA100200714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594b5d4ae99963907a1ba0e4bc81bade76757b07040dcfe5a0978d48cff9f7c1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ISA100200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781fe560ec3a9adcb9d2e1de174f16b9f0dfd6fb949850725aac372f9e53f530. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ISA110902101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d52cb5044b6a28e8d34dcd1a824f64560d976595ea0dd7edd5a6373628fbb7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ISA110902105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762804554d1208b967684088715dadbba0fa87293ee081b56babbf13ad6ee5dd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ISA110902106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca6848e72d19b3ec38e5751d72b454817523c9d324e22edbaea057894b42a8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ISA110902108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb30d2505801e67adcc5a23634975086a5117aecbaed287ecf57a5d20557626a. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/ISA111107404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0410e04e04eebc50b846f1df4777c7faf2c5fa1783329dc874cfe1edd84875db. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ISA111107405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d949cabb97c4635fd9f56a01873e9018cb540f473b9bcdde9348d3ebbaeb25. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ISA111107410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7781e1e1f194a150f92888b0a634949b7133c27f7aebae30f3c2c67ca3d2135. 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/ISA111107505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef509649f6225ba6f3022e05e062f82e3f68d3e1d34ebdf0ec1b235126340024. 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/ISA111107509.