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 0x8d4fd87ed06ddf2fe61c1a83e09d2d8e51e02d7fa7fdd744b72119e2def35a74. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4910443a-2f31-4718-b38a-5f4842df7ed7.json and https://artists.proofprofile.net/proofs/artist/4910443a-2f31-4718-b38a-5f4842df7ed7.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 0x0bde8c75ee7caee2d55b1e88b9ee0fdd5638e849afa9eaea6bc1029d991fc977. 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/QZHN92398479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5180e1c51471c33008babf2c6f63bf2cb775d8fbe778d41d1c4db74dd277eda2. 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/QZHN92398480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a7a407f74a8f0dcc964b5158bd32173d1156af8d4ee37eb74635a712ccc8d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB52226515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728edc2d7ae91069a3c3f9132e2c9682924a879a7a1eaea189ea3b39ae973f0b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN92398486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf42d6e97a30335edeaf14adaf3655d45d936d7d9e9c354067b330e8b3d4f2b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMER2239622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28401cd63387b1cb96867f9d7923d5b641bf60960cae03665f077c8bfbcf299. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMER2239626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1b200c3e717fac18ecfbd534efe2baa1148479f2731980a6da94d6ebaf7ed9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6L2260739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f14fc689da541441fb27282934fcc842817ac1cb478733b2effcffe06a0a33. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642401857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f583e36e686fd46ddeb080c86f7b72c63347ef6d7cc6401233f4aad9b38228e. 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/SEYOK2418782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13238cb2efdec2be9f314cf03ce9ed33de6a66fcabd1b57db512401b2f04dcfd. 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/FRR642302381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed916e38cdc225e759bb0540676241dd308487d5f233effa8fffe6317c3b0b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRR642302382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b11731e9996ad574e8951b2c0915117f4a710abbedbb8c133e29bcef347094. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642302383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7ce87e9a340f6ad1d29f2ed5996079bccec102d81cfe2a6ccdec1a2515352b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642302384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49db6185d8e70871cef4a28b5b4056b6d24fceeca3d7c05a8030bcc86f49a0c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642302375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a7a407f74a8f0dcc964b5158bd32173d1156af8d4ee37eb74635a712ccc8d2. 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/QZTB52226515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a134c9dd1b0dbc433f62d4b967db4c21004d4d498ddecf951868a75937476f. 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/SEYOK2431019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ec72d766dfbd102b09283ffd1b7e7441a791aa49d352e98824ea3237973a29. 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/SEYOK2431707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6e8cedd6034e3fe3c522d565600331fe490245af1bf787dfbfcaf0569e6c0d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYOK2431708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290956e06f61534469d7684795078da78cde19ddf8bc9ccad569a6eb9e804ed3. 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/SEYOK2431709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071129214b188cb88524b3ac2bec3020eb5145f26226b0ba5cadab250c901625. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEYOK2423508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2751d85543149755f414fc6d6d7dc8ef3c80fe89cd0c48a36b37bb69428622. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEYOK2431710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f583e36e686fd46ddeb080c86f7b72c63347ef6d7cc6401233f4aad9b38228e. 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/SEYOK2418782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7872ba38d45a9c2acd266a99a782c34e2056ba702fb756ca902ab08f7d0bd7. 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/SEYOK2431712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f54b8d8355499757cac531948dac174116048d12ade8ec2d9ee3906c77efb2. 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/SEYOK2329306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e8337777fff5c3c99231e6d308133c065696cb131eebacadd69b97fe6cb8ae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN42401511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e12fcb4d1a4e4986cacbf308c5aa09cdb3413a8b005ec3cd741932bd6bb374. 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/QZNWU2483759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81247cc6898db26bb28a94e72f11f98141f5ccd6b504d84b8608281fca1f1fd6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6542356490.