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 0xf1239b7931e5be9d46d2fd03f4ef906f7f347b253ec0d34e95cd86e4cbfa3e85. 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/3d6e3e74-6e1d-4a07-a755-0066a95189e0.json and https://artists.proofprofile.net/proofs/artist/3d6e3e74-6e1d-4a07-a755-0066a95189e0.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 0x3cda2d08d4e1aa95b980130b0189b953ac0f39697789c43717a7d1fe677db9de. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:41Z), 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/USA370328200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc77f8ad93c32d8cf0648470026bdee361767671033c80eab55109c7142f4c4. 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/USA370328201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e0345ab49c1860017c1e847345179100651ff78fd99b343896a937fe1db5a6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USA370328202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28282d9efce85817d50de35a8dbea1e561d60477a1e0f7962b34a09ce1f1a266. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USA370328203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808e0bfbb18b9d6564a0a5ad13c2351c67af71e6a9f3d35e426b6f34a45aa46f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USA370328205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4043d2b26600cca85a71265482bb455be5abe5f1a10f24b2335c707b96d5f14. 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/USAGQ0500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88654f1843da79f12d9690ab9e52d72ab0a82c9ad2459d6c3be49667767f958f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USAGQ0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98486b2241a02170181bebf9fadc07bb002f29ce18022777de00ce2665f0b990. 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/USAGQ0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4d6c15cd8a40dbe54e881cb1d51d2bca0ff79147bcf53bfa4cc070d7b64c62. 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/USAGQ0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e56cd17c626389540469d57fa6319b92c18a0a9e7023f47a98c80c11ceeea. 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/USAGQ0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da8e54eba9d148d63db414f5dae19641bd8a343a2bb1b3eb90e7e4f1b9798d2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USAGQ0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b37170bc43af31355e395c3be66b0d3db497836adef434236d15d162b9983e. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:32Z), 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/USAGQ0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bc57cc25e4353df8b2dd303d8ece2cf32267a3de85fc8603f4c35ff65c22d0. 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/USAGQ0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca349c55e0c8e977d79a076eebd84100589cc0d8858fac25f623e4292160ea. 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/USAGQ0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f549e526682357e295e9ab41aecc32395e0f886bbf97fc3cddbce45ebf00c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USAGQ0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15798c9b0470635620182a322701cd7c23c9b094f2ef1eb53fe26699f97cbca4. 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/USAGQ0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098693ef8a622ed53d5615201c8a7d31d985b718e6184d5456a1cff6377c5bc9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USAGQ0500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2744203ff4f36110d85e7fe9012f6747085982dfedc8d8e42c1f2dd54dd023d7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USAGQ0500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60b80cf68dd0152dcfef490b1e007e71d7b5cc34d812dd8bdefc027abeeae7. 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/US2760500467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce59246ef785f11425866b087624d2fbafb58a04ec161a294b7a5f26d9c914. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US2760500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1938e8d1ba23e06cb6806b85c43c83cb1fb4fc7941dafbbac95e48258a9da31. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USAGQ0744401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c76a5c6b696bd88322eab911986dbe2dd57892c30bd61f0a65cbbb571ae6b70. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:10Z), 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/USAGQ0744402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98bf49e3764700d0a746d01be26cc862c1c3f0e6906916528d3b18d79449199. 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/USAGQ0744404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09bcc9fcfc24c22eb872bfedb453cd68524c7c7fa7fa8f8a354eac4df388a6c. 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/USAGQ0744408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864219a29bbb2d6fa7efb0cc5991b2d97a3fb36baf3f9fc38fcf3c9b5c96ac1a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USAGQ1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e7d8333d489c708d35fc55998b9437ede56f53960c47ce66f442a82a783723. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USAGQ1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1be28b53e85823d7a5a123843e1c677bf3116949b98fc656ba5559a1430d19b. 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/USAGQ1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9e1796fd8e273c4b29d5c567c3bed0fcfd8397e2e21c30d6888b85177990b7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USAGQ1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5422cd98237d16093fcabec058c97275453d03d53d958d07892e53480024e4b8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USAGQ1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede3add54f78f937fdb0d2a1dc200197d554ffbde1ba8e4765efb99b9a1f150c. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USAGQ1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4bda0178bc3fa172b11a5a28df9d99d3ddb18f92f4b6b1123ba943e71fdbc. 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/USAGQ1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0289682127ff662a41b357153fd0cd01259b5991f7156b2198b7bf03e0db2d74. 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/USAGQ1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5730854964295002056e02527d946a95b6de009b2010f2ece1413d6bda1a44d0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USAGQ1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23662651e5eb425dc6e3a7a4bfa0bee43111b98f66525abce97c375edb8d4c. 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/USAGQ1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543068ce9f965288132cfb2e6f8ee41f73ca750c308b07badcbc88220a6c1a0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:58Z), 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/USAGQ1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3585f43e39da98bc6e5e6a7f3aecb2939c6299ff8e578de4c6eaeb59a9011. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN42218272.