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 0xde16067c245f30309634046e46619e66a32911072276c5c29bfa3a97ab41ee51. 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/79740966-b7ef-4190-b152-fa87e7373131.json and https://artists.proofprofile.net/proofs/artist/79740966-b7ef-4190-b152-fa87e7373131.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 0x76d87d4b867e62f1a397d83d58a5207ed9467a9c1b6906952a24198ada2f9ec4. 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/IL7192401125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a75194ff73ed58adaabd21c657b70d7e9861fc879749a1647623ac5d06ac874. 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/IL7112001239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2927b8da426812f74acfd712d1226ea19de3563c67261b4d5e2f2435ed818a. 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/IL7112001655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20752bbd731bd2836f473e47d988ec9fc778b7c40cf0fe2fb69a546c6cf6fade. 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/IL7112001664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154992c74f99cd1067f7458ee4e91255fe2210cbfde6537a311a10de911f6f44. 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/IL7112001667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928b4784dcea2ced5f949a5de19b4c31b33a34f86423dc115ba705bcb7b4dcaa. 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/IL7112001440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a59f41283d78d088c7bac923bc08cef13cd91eac91c71d1aab1e6009d607b. 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/IL7112102536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d3f1892ff99c7a7f5362fcab961dd93ccc911730c8e56772d956564ed688b. 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/IL7112001660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4279892f0c18e191256f78d8b965ca72a28bc3f10995cb95947d3f59fc10916. 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/IL7112104503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5630eab914bfd02e97f150c145cc0145bd5ba963a438ac1ee53c6fc47f0805f. 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/IL7112001659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2b40cd5c2ca8fc0664a25377644e28f36c2efac805f15717145ef27f2e3b48. 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/IL7112001661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a75194ff73ed58adaabd21c657b70d7e9861fc879749a1647623ac5d06ac874. 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/IL7112001239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3e500e797dafb17dbca2e5e1548749ac7cb38ec81e3dbbc9b14004f4ad2a7b. 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/IL7112001656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9547680c98a04ff6bdaece93836484f7421d8cf3c46816edb8fced1f6c70b8a. 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/IL7112001658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf478887376927beecfcfd1369aeaa1212387e0f07a0a6203affd6873ead3b760. 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/IL7112102537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93781d84e4a9c8af5b8b3b13cd3eac19790d956fbec5ef54615749c1ce3bd7da. 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/IL7112001654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ca460f365db4da577a20eab8a7951f143d7aead620f4105076575c195f57aa. 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/IL7112001666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacdfe159db4a6ecc303a6e721c92462aee885ef2f17cbffc6a5fe19a19ab4f. 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/IL7192301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643facf27ada81a2266d40ec7e04881618ed2ca285d9abc2fc34c9dffad479ee. 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/IL7112102535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01934338f5a31e2c7617d161136e6c17a49993bac8ce2992062d742b1fa400e. 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/IL7112001657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902f526b9c08092b1a8ad0548c67db119620e204524d981b2c2c60dc697e127f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IL7112001662.