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 0x67dde50ac2b06b46008d341807a4d8a673fdbd07d32493a506aea4e1a395f07a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ea6d5b4-7f3a-442b-83cf-467599c52d7d.json and https://artists.proofprofile.net/proofs/artist/6ea6d5b4-7f3a-442b-83cf-467599c52d7d.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 0x3754e102da390889553929b6abe1a41e8630735855a91b7928f3159bace3103f. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/JPJ492000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf833e53b56ccd1bfc1e71f5cb666b4760521f3c09f378e43d29f3f2764d056d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:25:54Z), 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/JPJ492000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7debaf06340d48629a5995370a32fed71cac7b55ef6edab24ca33e16c357947. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPG102200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba88f09a13936ce24eba2d204f4ee9d0eb6ff3bf763f4a2f8a7c0dd06cf29708. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:05Z), 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/JPG102200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7debaf06340d48629a5995370a32fed71cac7b55ef6edab24ca33e16c357947. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPG102200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76e12687eecbda8fbd0f9569369def1595f079857b59a2ecdf071209f3a7f79. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPR502301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2479f84374f6d1d926e1e9bdd532d8f91e379e29a8afdcef80a331671a18538. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPR502302787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8473ae1ce25afbe2e0375d80c38f7c645767fa77ca4812cf94b07e63526c397b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:30Z), 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/JPR502304054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5fc6a5557c7a4659afdc54680521614c2458c4f31afcb0ee6dbde603d59d77. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:19:30Z), 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/JPR502304051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34ebef452928315b572161876d4c642f9505ce041ec1a305c69ba77d4a19739. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPR502304052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa546531b2084d9f5a39aebe5b9480848428dc6b772c2a4877a541386c2699670. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPR502304055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b7ad6577304a69f619cca543147ca132a99d45267973d4ac34d76238faf0ce. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:02Z), 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/JPR502405434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad29fc311b194aa4d39d938c396a33c307a9134e240110eca4307b900c341295. 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/JPR502409058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aeb346a701891ae154e541134a89311cfaed9f74d89335879a012f8e5fb60b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:41:53Z), 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/JPR502411883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de6595f2f6b2cf9f94553c92354d715bc1fc62f73456d24fffd3fe8d0ef3c09. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPR502509809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a58294b939e91272f877b444267a3c9fc28cf84df0ec5ced6ee4585306f0e5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPR502512585.