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 0xc2acd348acc71ba3e8fa54d46f344631cff5a1727fd88d9258ade31b73b10ed8. 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/d24af6dd-230b-4ebc-824e-da2b5132b4b3.json and https://artists.proofprofile.net/proofs/artist/d24af6dd-230b-4ebc-824e-da2b5132b4b3.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 0xc9dc7af1e727eec007ca888fe7c4afc066aad79bf3d2c8076f0bf8d36c6f3231. 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/ATBV21600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae68259bf354adbbf179a1f6f87a27a4541c427053221dca46207234b7d96f4. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ATBV21600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8e826a5b77ef634843c6f89986e8e60c4ffd09a08dd4d92653894904d5a18. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATBV21600012.
Ich bin wer ich sein will (feat. Allessa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531a051a65e8667ea2c6990b8b6009f16490d4720e1cc9831e878d5396d47170. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:12:22Z), 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/DEQS91901419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f813ab1b99c71e3e95327d027732fe9a7e2146b6b928ff138c96cdff86fda84. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEQS92000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8a4a73f40749878a4223116367b3dfc7eaddcd736e3ecf0b51127a09bde539. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:08:33Z), 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/DEQS92000444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c6128ab912f00320fbb826485b35c2045c41c1b6f3b815ba493bc866a3bb6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:32Z), 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/ATBV21700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f40f01264e559805c6b47b536a1b928cfdcb6a6d0d1d7d5a354f88744deae38. 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/DEQS92000341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6788e4eb8b643e68f14c031b8019c270f466afa29aee6ffd65429233aa4729. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:04:05Z), 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/DEQS92000347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbe6be9e87390236f8a2b6154ec5fe1fd392a37dbc91137721e80e9c34744c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ATBV21900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1880f102d030452de4387b8931b1b62392619a1e4ed58eb4c58617bb83c3c26c. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T17:00:07Z), 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/ATBV21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c6128ab912f00320fbb826485b35c2045c41c1b6f3b815ba493bc866a3bb6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ATBV21700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69876c4b65013b2303ef9226afbb3cc492b37b2c5a39ad479ed5becfdbdf5b58. 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/DEQS92000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8623be1507f59fbbf3efc5f952d988a0f07e7fd8d32ea4e3c82e3ce13674dbe3. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/ATBV21900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8949760d6c1ccfb3a8b577ccdccd5f22324f85df9468f9024386dca0312ea60. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEQS92100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8949760d6c1ccfb3a8b577ccdccd5f22324f85df9468f9024386dca0312ea60. 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/DEQS92100447.
Vorbei (...ist es noch lange nicht) [Groove-Sound-Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75ec515f00364a31b820ae86c505d2a53df13d85eb08405c05846a3e8b1dbdb. 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/DEQS92300395.
Vorbei (…ist es noch lange nicht) - Groove-Sound-Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58480a9a878ca06dbc7842959776bf17b12d8825444d6c05ac9b22cf3c496ccf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQS92300185.