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 0x76f095aeb853e0c2fb92d974378de1021afe7b6b796fa220cb98a2214e7457b4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdcbb85c-14a7-4ce2-954d-4d4b78c3cf1a.json and https://artists.proofprofile.net/proofs/artist/cdcbb85c-14a7-4ce2-954d-4d4b78c3cf1a.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 0xabc09e5b1011ad48b520ef409dabe7b681e14bed32f0a30e5b9f0fc31c75975e. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZHNC2108733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba4e89c0af345ea8a486538d94868337d9c2d0a0a8cb5aa3b79a60d3d5f3738. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZHNC2108735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc237b6697d5f43732e65dc06a9363f03fd05262bb01043520e7db87a1b8dfc4. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZHNC2108737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d36d7a9ccc76721e9e2d4e5bb37b5dc3174527b694abff79e8b7d6dfb8b988. 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/QZHNC2108738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49486965268d6b0edf9431fc10ed4e90cc62265e6b823b29f117adfa6cef8b4. 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/QZES82292787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba921660dd6e24a418ee6fc75b15a0f1a2bfca204e504a0cc1ab46959c11b8a. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZES82292788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e8dc675b7d4c77a5d988ffc289054413e651f69ab9a60e0f6d171b33a2adea. 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/QZES82292790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d052e563baf2a12ca43e9739e04c8acd773cf590ed81a04224b31f5089f63. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:28Z), 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/QZES82292791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe7bc5539623eb988a217267dc9dd7b8a2b8dbde2b17c1f73735328c10025d9. 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/QZFZ32386135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fd2c69792fc20246d55499f033488f94eeda627883930e32426d0a8aad3ed6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFZ32386136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0979b968421536f55a1a2b99ba2374481ac5b3ab99f7f1e4236b68cb9ae2397e. 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/QZFZ32386137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b32f7f4fc501b4b76c5e12476723614e865710d67161dcbf00d950b00a526. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZFZ32386139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef78c91b95887ae95be61cc852ee4bdfd3921e7e36994f46f7825e2d3fbcf31. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFZ32386140.
Der Himmel Bleibt Blau / Ode An Einen Freund
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402eff5184e07d5b4251e39ece285e481a73b7fbff449e74145ba75a98364760. 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/QZFZ32386145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2532bd4f94f3ba7ecb9e4267989624c25a47b6c7760bb6ac917160442a5213. 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/QZHN82343483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed7624fcf398299b14d47fe65dc461970966d9edc8c447549d6ea164766b5f4. 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/QZHN82343485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a6b3ffca1469b29535f369812247b878175ffab905583b16ca14b5671e793. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:42Z), 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/QZHN82343486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6975d073eb269a74a53078d2660be884219f4e308e3d6cbcd0ac32b50953e8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN82343488.
EIN LIEDERBUCH DER WILLKÜRLICHEN ANGSTFORSCHUNG
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b38c7aa4ae764e2cdff39d2eb15365b75740f864980ee507123dbfb3a77a0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN92499278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aedada5f27614be16d35e285c223a49ae738c337f06b2977da244233907826. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN92499281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48cccb984ecfc242c695782c5a0d7e405fec005930b8e66374d9f136dc939c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN92499282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b686e9efbf0cbddb15b8d2661247946dd59c167885bab8245d747daeec5c8e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:33:52Z), 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/QZHN92499284.