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 0x2a4eb70d4bb689beee1267ca54af4645a3cf5c3a71dadd7701568ded81a88c8c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d732886-00a7-4945-922d-32fbac1eda45.json and https://artists.proofprofile.net/proofs/artist/5d732886-00a7-4945-922d-32fbac1eda45.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 0xca9f5f0eb60c3a3c16f825c9bba805a889f508d6c58c04dcbc827eeaf781038e. 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/FRX282167159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dda36a5e6d50f5823b43aeb9829bda6aaf79dcf2f5d983fcae11f18f4c46b4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX282167161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3d3ad4f161e64c388067a00b53e6eef59c5137f61524bfb02af7cb86478b16. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:13Z), 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/FRX282167172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7152b2cf2841455f2fd34c5cdfc7e0c028f727b115610b1cd0b4dacd182243. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRX282167174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39216fb4b2fac390138b851e8cb0217aa0008a621fd77a1954871f92ca271be0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:25Z), 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/FRX282166474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19b4279a585602a8798515671c40156bc427f941574afe82034b7d6746f6e1c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282176650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0c92c2af991a1bbe0d5573b109fa4bf9f5a1c06456d60262fdc2c1a0114831. 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/FRX282138367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80079760d826e41a7565f847a99edd4410b508d45d74b3c5140ad0e8f6e155b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX282166285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb8c236a2b467bb11a9d5e51c3952b2843d5a16e29edbfa1f7644c21f24221. 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/FRX452136668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9e64651540a816b1cd90b95b7c2509e16b31ce73e3ea3023f9a8d90f899850. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX452136676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea6d369c8b218d31f617ad4fc3e370153db499c67e4b3c167301a49697c3518. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX452136680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dde3c45f0c129d79500c5573efb443c877e1dc1b1ead7aa9d30f633b6bc235. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452136684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006e53b3c748738aa1ba1d22b2274bb3dd9d17bd93197e3176568e47be9fa7d. 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/FRX452136697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596102b99789316a7d3ef8f5ca6c1e106bdd149d14e577bf639f3a410415038d. 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/FRX452176222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357a8df9d67545741f72578c2d556b2dc56a745dfc41216a13824ae7b0afab89. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX452176223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966ea01751a77e61af60fe8cf7a78a3394950e0048b822f2ca141b91f9d15648. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FRX452176225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcc3e6586a8b7eb14a8fdca08df8f9ccae88f640e4195b67d0c51e293da4eb8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX452176228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e785938401bd0f8ba85bf471c2ca5dc00704db6db61416b83476bc14c8313. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:41Z), 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/FRX452176234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f60199761ca77ff269eff62174c14f7f6cbd6444c6734713c75364a6b5d2310. 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/FRX452176235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c3e1843c341c138698f1728e9d451e4b2bb67460086ad69cdb35aac81a860f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX452176236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d512af63d04a885a84df78270ee79bb96b2a5ef654fd347947831d01df848a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX452176237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae645218149b3fa83be9ebb977757f24280e757c36eaa615cc227b93fb6cb22f. 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/FRX452255580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788870d54928bc902788c37a931d8df795fc4ae88ca6714ec1a3aa69b3eea445. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA0M2377338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa201593864597623785c42b5f8ec616322a7ab0a0b5febde486f38b1b4be1ab8. 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/DGA0M2363954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e0620ff2ec314146a26f9e00dd8d6969966026fb8a3f8b497d9356c6c2963. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA0P2358866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce71aa94423f2bf4f30a9fedfc4ccf8193f37af7fecfa38af0d303d648b139. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DGA0P2358867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7211e12946151ed09d3f3c6dc2c267fdf17d2e9f8996bd4a8fc19d814a9157a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:32:30Z), 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/DGA0P2358870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5448de4dac429f50f07117c72aa364369029ef5c5a88a9b0f76e97f27b674308. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0P2358872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8af94d60ebbf1a9e9f0a2a49de4933517b2abd6d53dbdae393ec0c9b98146db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA0P2358873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f97de7c116448b384db418becddd825bf5a8600f181336de18666fb21461ef. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:06:29Z), 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/DGA0P2358874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6825ff50cb853b5c04f3fe7dcea6e90ecfd1303e5e385d72a1b41cf4cf8fb0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA052490733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28a9b0e0369cc74008e56367670e288e07779f368b17a939a8e7455b781727a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR10S2503997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1029aa8e1a5c0abf2e3cfb560edce6bcbbefef526040ae9f591356dc4415e0. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR59R2541188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbe12945fc2311b0326b82ccc678d182063cf841ad48b5e56d7a8a360a1f3fd. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:55Z), 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/DGA062576372.