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 0x15cf4fcf09c8685ff751fa158a7b50d95aa4989aab2359bc5967487505e9339e. 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/e819917e-b6a3-4c64-bc7e-ced155ab8cd1.json and https://artists.proofprofile.net/proofs/artist/e819917e-b6a3-4c64-bc7e-ced155ab8cd1.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 0x30454f3fadc2f690bfd05e529a2c0f692c895ebac00f2e5ae98e32d65524e76c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ATT259808990.
Weihnachtsstimmung mit dem Original Almrauschklang
Jubiläumsproduktion zum 80. Geburtstag von Raimund Flörl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e622726d5f3ae9663c0b3915c07a2a78a9b0ce073a65b53733933f98097a3d5. 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/ATT250505360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857974e1fedf2610eeb4fd898231a098a483d5e0926ce82e99bf39a4faaf9e2f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ATT250505490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5204f7229b2b05e409e022d46162f986728b0c9dd5453a95d6d43dd0ba130725. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ATT250815880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65728393cc03ff55c8cffe5790ddc66225fda0b7c7c6d9554c1598ce888e83f8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATT250815930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7f668c4dc1ba73659d3c0aa314c29c587ac5365e09b37d3d2471315879807b. 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/ATT251009730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97724b7e28cd8e64e70ee06b6acf7ba78841f40475df43c61f384fe6fa9430ab. 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/ATT251009790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ee035bee8fdcaa8af2f344bc5632b492f6f4191fe95a3a01c6f0cae739adb7. 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/ATT251009840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccad2b149ae337beb906076fb1c890c751aa058214fc30e068f2be08f7661bf3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ATT250606300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19220e3954990326ad1a626593bcc3851473e5332a1c525bc5b2aed1c344d86e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ATT250606310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e07a242a1c5af4c00bf297d8cd8e8f088348a96deb7cbba320888f63d88718. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/ATT251706420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04a952966d02d17762a8ebaf85ffac211399f579e641dc759275a7a3490aed. 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/ATT251904930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd206628db8b0fd4403f2738da226f97597076642828fef8e0d2722db72df35cd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ATT251904950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ba97f7fa3ca75048cec033c87354006c41d40506ef2decc404700881a291a. 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/ATT251905010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475f236430b3d7658c591ef11b5b920a72198d51876d5bd0d87c2ca92a40ed24. 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/ATT251905050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8ae46c7bb98be9de5ea8773cc7848a017932bfa558b0948f501af9438f862b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ATT251905080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0c573bf0a51bdea9f94582c0587d41bfc728e2bd8955691c5ac36d7a807fb9. 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/ATT252012580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f90821df984c485f34bee526aace72f8edf4f57b462d491598e85c9f09966. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ATT252012610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188fc8b5a048e76e2f229efcda64f716040420f42b98c491f3f3f59b688950d7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ATT252209980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75762ef328ec273ef8110d6687782c1694b41cba87a2bdbb6c21119c5f5de1c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATT252209990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d8837f9606a4b5815cd550de6f6de80ef0aaff4f45b38035866ab67bc91bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATT252210000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899c933d43cf44cb94943b762c9a4d7b40735221da703c483b7a573b8db81e0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ATT252210040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f9f646a6a769ccb82d508c04a0cbe5a7842248775889de1b55a7e89fc9c152. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ATT252210080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef1c2acc60dcffd31d03ec2a55b1f2bfd4d40e151b8ecc7f96d459353292761. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ATT252210110.