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 0xc44c556dcc6b902c20e4394615b0175fd3411bd5614c17901717f2fc83ef31ef. 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/b40881cc-c6d5-4ebc-9f89-22e5e19aa043.json and https://artists.proofprofile.net/proofs/artist/b40881cc-c6d5-4ebc-9f89-22e5e19aa043.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 0xba79e535d6d14cdb718cdbd12dcb7c78960f3ca55ac719e73eed3279d1189115. 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/NLCK41040008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99dfec1d6157c1ab42501ffef4e91af3df5ebb92fcfb95f8c7a5681a8cd85b2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:08Z), 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/NLCK41047331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430261b4af98c2ced98c53125ead07a9813bbd2562a337400e339c5d79f4c33c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NLCK41047332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062be01cfa198b5c6e839cc173ac22ee8b554cc0b5fac4df87c52ace491fcd01. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:14Z), 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/NLCK41051493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece395d8c08eac33d73bc084fa7922291a05e0c5787b0e5eacb8eba044d7ef3f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/NLCK41057857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d5c7fa6dee06d28731802fb4b4d98d66cd92973823b02091b1086188f8a003. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/NLCK41057859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bdbf172befe3eb61ab358db290ad03371d0da2a1826447917d7ea29c1e4348. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLCK41073118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69701360aba6ff7bf15e97b79ee4ee77ce58480990d89defb1e5e9beebc16c34. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/NLCK41073119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef021fab0aca04df43a3857215031ecd8dfca6686ca2d475f2fd78cc63c9a39. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:00Z), 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/NLCK42218846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49472c7b20b9ca14ae8b2d3b909a7f4c138e8461ff3e8492ae2887c1075866cb. 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/NLCK42340173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35172456dd1cb796d643d4529c3e875620e1ed91bdda1ff482cdf09cbb370529. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:40:17Z), 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/NLCK42340172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37f92c20bf7daa535562a3aa42a085ebec3446c1616e620ec3fb7d1765c8a4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:10:27Z), 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/NLCK42340174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f36f3b6ef62a5d3ffb178add2b907f794d88bdc41fbf80a23723b5f06b3739. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NLCK42403859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d0253d4e4583ef3ee7e8571bcbc476a3719a78c77ee939289b005700d2cea. 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/NLCK42403860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a242cd1463fbdf228e52a2acb26ab7dd3345e38a95e4fed0830a028e2c66a96. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NLCK42403861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735029aec52fa1bb9127dd484b4e976dc638a5644fd7a490fb29c25ae317cee1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CA5KR2504769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a521229d872a11ecc015ed3bb58f1f20b5727ca4602f58a833a13eb166b6d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DE1O62447885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692934e94a2faa6330e02dcd6c2ccd10a740184209f9f70006c1ae73bffbaf84. 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/NLCK42503086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b75a130784a11ba7d39cb782908b853797fe07beab018a9254d31353b70adc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/NLCK42503087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4635083081b58fcf8171df0b0b45fa2aace2d156f50bbf5df28de3de520c2c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLCK42508750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871bba8b22457695dfb6653cc830a5c636935de07389c5e11434f06989bf7846. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLCK42508751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a24bf708d4245c70e4add108e2c4e3786bb4dedcb90d8dc84f9c1b2f5a4fc8f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLCK42508752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b46068c3dfc289820a908f3a6191913627d82dc3af9f732b313fbdde5ac1660. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLCK42508753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fb08e5164753de530bfdac18ce949b672d6c5b0e10041c982a73bc546ba466. 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/NLCK42508754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d68573ce113e2c85870fbd4341fe068233ebdfb45a85081dc13ba3ffe65f119. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMDA62587907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d54f48d96c80bf010f1a3644c0ef6e701b57e83bd606c38f7eb35dd724e7a65. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:20Z), 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/QMDA62587908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb82e3d7cf8a07efeffff2a3d814c56d4a044c4fa754f03a5cc7c0e76de0ead5. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QMDA62587909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c1923d27f0726f9651bd9ad7fd58393eb928297e65c79c56da4836b74d8f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:08:15Z), 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/DEH742155885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a02c072ca76e6dbdc90417f9d84a50a97c522bcc5324b0d7ed537f0d01a1764. 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/NLCK41051028.