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 0xb73912484834327991835069f125eeac5daa2e3ae8fc881142e875d39508f4e5. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e687f98e-6832-44d9-b544-2f1945eedd63.json and https://artists.proofprofile.net/proofs/artist/e687f98e-6832-44d9-b544-2f1945eedd63.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 0x78a7c625b8ea60a9b36b4a4f50a6e72fc765522cc1e18f88b0b7c69392f38d1e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ATT251115730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d9044e66981f3ff73b7ea24610e7bf2c738457d0228ed68adfd7f3ba9c9b6b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATT251504850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230b37bf005feab26c0fc9665a902be529390cd58a54476e08da9ae23b875111. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATT251611340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2481ea54ec257b8918fc3b8bd1143192bda9fc9e224eaee7339623449cc4d2e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATT251611350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce253e2cf44e773c125c5bebc091736d935224a0f0292139cf1ac8a2d40fe9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATT251611360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30bc9353c3bee0c2e25cc939e6434638f66e63dac7d53e6be4f9c11895bb930. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATT251611390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde09b66d0cdb8e5cb29d2c2a4b59cda78f7819abc11348e9e45c40ebc561e119. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ATT251611410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc775ff9a7bc4b1eac489ad966629e6c20afa4d6d4823702f31d4969a66797805. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ATT251611380.
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 0x13bdd1a5b3671621ae24889eb5fb8f1a36a13433e10356dc84b96547265ed3ae. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ATT251611420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0a1148b4ec7e54d53d90ebf5380b0ef69196909ea79a9396f20e4f08f3418. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ATT251611430.
Tanztempel-Mix: Wenn du in meinen Armen liegst / Denn dieser Sommer war so schön / Gefühle lügen nie / Nicht ein einziges Wort / Sag's nochmal / Abenteuerlady
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4d416911d30b743e8669906cf84172ae2b64d5d2673e13bcc4dc8a87abf4c5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ATT251611470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52990e0ff9e95e56174904766c55c07ec00529d96777c2d219c9983919615923. 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/ATT251808780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869aa6cd655d359752ae1c9c99132d522a70f65a534b4fb709d22b807a3420a7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:43Z), 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/ATT251808800.
Foxfieber-Mix 2019: Das perfekte Gefühl / Ein Fox zu viel / Ich verzeih' dir jede Sünde / Dann spielt der DJ dieses Lied / Wenn ich heut mein Herz verlier' / Zimmer 228 (Im Hotel namens Irgendwo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9917cd9577f87ca894fdca15acc2fd71bf78321148fcbdda54a137f250943d0d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ATT251808920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c64e3d2124dd365023430de5db6d3d0a58dc30aba2c2049fcec375e042c26a. 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/ATT251811470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d51403714203414935f01e06702427ec65394dbbe0c2aeb21a7159b762c31c. 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/ATT252306770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb22268a9acea418512b5313dd9482b653f2fb3f5e208e9dd24e312cb36a13b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATT252306780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67c052d3dd53435b6fad66d8ff0e3a03eca2babce06a1918f9cb18f277353a8. 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/ATT252306800.