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 0xc46399cea35586c5b09c97bee070b280328990bf9b1a354e950696cba9a98ec9. 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/54e1ffb7-4fc1-48d0-9da5-7aea17407978.json and https://artists.proofprofile.net/proofs/artist/54e1ffb7-4fc1-48d0-9da5-7aea17407978.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 0x055c361d6286c0aa6caf9decc93aa46f788c845c0441699c8bc55629836f3670. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/GBSMU7221192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d58f55ffd7af9cce46f63e425cd22ea064f8808877d0a3222e22f2ce3aca51. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBSMU7221341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca3c181363f067ae0ab87a62663313c4237a1dcf6a94d16ffef393d0fe0c12. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:14:58Z), 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/GBSMU7221346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a284323b5a254f6b27b3453377e1d032114244d1a831f847b53cd80502152a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU7221353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956882115b437ef925047d6dacd378315681f143cf3a83cf7af32a911c12be5b. 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/GBSMU7308506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca896fce689e78e84386898c1993600a3151292959e871d437efb926b1cf5751. 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/GBSMU7308513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08b5f32e58262c6418e2361165c944c087f30c5415a4d3323efcff513a65176. 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/GBSMU7308514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1805eb26f1bd5023dae1b9498ea4eac80f4b4cb2d90a14cb9e983f81b508a00. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:14:04Z), 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/GBSMU7308512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2299c7d9e950459353f73fc813d8fc3037af691e69d0bbc63cdb0148deda8c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITO372004351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572747e87b5f9b6ec04fde92ae5539173f80af796fefa8c43ed70500cdc7d05d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:22Z), 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/ITO372004352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63fc79726688cd8395ae52c2ca73211d4948905d82a661507a9918535de51dc. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:26Z), 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/ITO372004353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf8e9d0230dba5c80d2f3480503e9b0628bc3c0f1dfceb881a8bf24d28aeb68. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITO372004354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ccb28bd275bf5502a740d50879200ebdf218929435cc4e54a9365ee0502f0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ITO372004356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625343e1ac8ad02b51c0ddc6bd9e6f3176bb87774825ea70e66e52a6d64137b4. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ITO372004358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce564bef59118653e5efee4ce83f113260a380053316421d708d459141ab7bd6. 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/GX5MY2173906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77590e0b56d74c64a3d93078305b16a531d07c35775990d2238d1b38592c4be9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX5MY2173907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e4b8f868d1f3b3b9debf3050bb1a26f4f8292569d6658316bb0b1a7df25c0d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:28Z), 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/GX5MY2173908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc3f9b0ed52a56f4573595309caedb624e81eaa9d34e40828996bedd845968e. 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/GX5MY2173910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ed9aeab37977cbff8baa7176c170d30c77c789adfd7051ab6b3a596b758c28. 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/GXBDT2314199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93f2ba048a24e13f187815154fdf7de73bd2e29f7423aa4c012ad46fc12acb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:34:58Z), 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/GXBDT2373758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7bfbcf21ce98c43d4203a4e9e44699cae932dd6322de371e0a9d698bfb016d. 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/GXBDT2352846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e5bb242ef1dfd897ae875bbba1ae625492dac390cef02e4a61e0580e503b2c. 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/GXBDT2343543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ab3dd13d6a217e8f9bbc8229eaa7cebf7d67db166a8d7ff5306c15ad2b5f97. 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/GXBDT2396648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb419cecae8ac5886e2d5c115704af81d9fafaaab2500d80cb93cc37a73f7bdf. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:45Z), 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/GXBDT2347019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e5bb242ef1dfd897ae875bbba1ae625492dac390cef02e4a61e0580e503b2c. 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/GXBDT2343543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b5404c081f6d35dfd256524ac454b7c01234b6b68a29419c64dcfd3eb6e7ee. 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/GXBDT2380072.