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 0xb5d358b74203f3c2dfed0ad49123bc78a6fad02ace5eb3dcc0bc4f9f7b1b41ba. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a389f486-c376-497f-ae9c-2a029a948c93.json and https://artists.proofprofile.net/proofs/artist/a389f486-c376-497f-ae9c-2a029a948c93.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 0x00c8793051a78bb2467491227e7b7c4fcf5fe754dc5262b106e72c74916dd3b3. 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/FRX452277192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d05487a5191798dc862d93e7c599d1f351d32c16e61dc2e891da68cf008833. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452277193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dc04f6890dbb9ebc8ac48b0af23faa800a7e00d5087fecad6ce80ac9239ecf. 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/FRX452277194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230f8ff944d9123379dfd4ce9c50edfb44e1b4eab59f78b3c664361bca3f1133. 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/FRX452277195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ce41f35232bf624ec1651f9255b899772d73cf86927b5fbd8dc5fb9ccd576. 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/FRX452277196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b9454af1eace782a2efb494eba1451046c0a9fefa24038dbc8ded453d8be62. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRX452277190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6335abccdef3fdf61bfc492960abed4a17dd260b483529c97fc0dffcda61fe36. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX452277191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e50f84344c7c17b57d20717852719db6f9baecf57b2de2e3816fbd4d157d14. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRX452277197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246ce4c46d410621d31a39bf8166216a240fc5f175fd48517d9ae4e13317eda. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRX452277198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce883da8c075944ac4357a3fa294fb4c43b39c7bc191ccf94e2739ce115a53. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CNA792100767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf71eba16eb71383dd26c2cb45fe266521e540d7df5a65b76223b187f1141e6. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/CNA792100764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab252701a32dab82112b27ea66324661ca9ee38cc5d614cf5153b49f8d3a807. 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/CNA792100766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619228a8155feff1687c9cac06b90f4533ae8bf1386a9b4bdd6c95f817cc7532. 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/CNA792100768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d64381a86e22be411a1d613fe180a3b06967c274919dec7b7a045ad63cccaa2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CNA792100772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686dece964f57f415ba06c1dc5b66ebfa86b0604c816372ed5ba2f2c6fea1292. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CNA792100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c61bc67e5e4a8540c53941a4134c510c9bff4c09d88bb718ff0eeaae7f3102b. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CNA792100770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad140b7f85dbc47674abea08bc6ca028456492716e5796ea0f55622f352127f7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CNA792100769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7737d39eea339c301c0935df6f8d385677f8dba7ffff9cc063631fa4f1a90f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CNA792100765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d636df3fd187ec7446c58dd34b905f1e78bd8ee121db519f425efe184be27a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CNA792100773.