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 0x139c00462362cd94fab3c83c3aa472cb4afb633eec6d8a536c1e150e19b82872. 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/9f2fe416-6bde-40b4-84bb-f32263647ffe.json and https://artists.proofprofile.net/proofs/artist/9f2fe416-6bde-40b4-84bb-f32263647ffe.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 0xe9c068a66d25462ebe8e8a7c178b998b796bf618f201fe14fcac813e15f3b2da. 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/ARDJG2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5889a7eb61ac1aaa804aa4bc96f9fb36e836658a980cacbdc17a860db99102b. 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/ARDJG2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9885b60f3aa99e5a7428f57b11c96b85afb680c427426d4521bf2189e197f67c. 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/ARDJG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5ad4435a9a4ea2242cbb4c0820619b0a0b5bcdf56413428a69320c3a92ed28. 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/ARYHY2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c9996e245373b0e3a15348c2e14f8455cf9cd420d04caee06a99c84eafd1f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARYHY2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6043668db7feb5ddd1af1742bc79330aa36da5e359cb80192097090751caa5. 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/ARYHY2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5101bad8b0caa0bba9799fb92696714c646d5e430c011c1380a660725c9efb37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARGO92000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a022d6058f814b29cf20cc4def2f879efb1911064da55c47eecaf0e925db5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARGO91900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db20631d11be4887782d649527e091cead3f00efc4af3ab66d8aff971da5170. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AR5IR1800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b3978aeaa3b23ccc123d0a7bba38204f4d5f4ba60c718859ebe5621fbb971. 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/ARBG61900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5df92562c2f8027b2b14a01e5193742a28426c366f771d36fc0b71a40b0074. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARBG61900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fab3520657137d0f3ed895d1771ddf4a1b90627132a44b85e80203fe9e4eab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARBG61900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759cf696ec784e00423ae72fc080a0ecd8a882617303a770b88f1ad7efb50a8. 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/AR5IR1900438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261c9c98fe1488e51d30d3a7c6b96305eda8b1565327bfc7aa6891eefb2da47c. 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/ARBG61900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc690659a5737be16575c57f85a493f96d7010b41da557e8c5d3de0a7e36c152. 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/ARBG61900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cba070dafcca85be138402f7c4c46d92b585e62a9a136059eb7781a2f1eb51. 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/ARBG61900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd807ac35d4a5e67246c56e36784a25a15867b19038dca40a352bf634d1f0a9c. 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/ARBG61900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449299a71a3989dda84ca36c54ede6e6f6a73f93a2888455d34bf016781db0c. 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/ARBG61900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415e678dedb5477b95d16d718f2674d3293479e9e0124cf7878cf15a4b927261. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARBG61900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fabcc4a9f113449816368e87689aa839dd4162e37b612ff2202a66918f329c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5IR1900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b321610d347b52dbabbcec42460a1886d7ba3b2582e5678d9487c6c5ec4fe6. 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/ARBG61900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdbafcc7d56d5b5fd94dc2db89f0057bfa29241eebe461a6bf21de7b8aa7211. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARBG61900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee51f20284addcaa946a9f21d768cdfe36fb6685e7da37228bf0a9152c43633a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARBG62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e5b8c3633dcbbcdd2522d77c1147e7db6156a4955644d7e29dd31656864f7f. 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/ARGO92000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa632f8be7aab8372270dffef78fdc7f44bc94acb525e9de2b1630dbfc9d42a28. 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/ARYHY2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae4f17ecf3900a64c6b6b5e363a19dd0fe0a8170199346dc42f4f697a863e96. 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/ARBG61900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7b3193bcdfa7cb2836173ce5865c1f70a2bafc0f8127771b556c87a5804cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARGO91900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd807ac35d4a5e67246c56e36784a25a15867b19038dca40a352bf634d1f0a9c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARBG61900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10a3012a88a59ff65b322089714388a5a507f3217ceb8238a6e233f29443ac0. 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/AR5IR1800097.