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 0x82a112515927184a00be263c92eda51ea7993e362adb5760e8e36ac96246a668. 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/86b2835e-f5cf-49fc-ae9e-7dc6837901ae.json and https://artists.proofprofile.net/proofs/artist/86b2835e-f5cf-49fc-ae9e-7dc6837901ae.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 0xc90bdaa0103411d26259a11bc482b484abb99fc503a14b78c9999ac4d689f9cc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCABK1293221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84652dd569fe9fa6dc2fbd58589fcd7963437837174be4c9a999a42d6cbae588. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:26Z), 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/TCABK1293409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8e9246cb3491169279a1752c78187fbe631602f2657f479dd00c11ea8edbe3. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ROB010803319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5462d733736c5e001db884e132769d61dcc3e8f515c981b746b7ed7be3ceda46. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP1548354.
De sărbători... colinde și cântece de iarnă
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c15c56f3018952b26c9ad7ebd1023605354cf4d33546c86a4a9db6dcbd2e8b. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ROIMA9500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714c6dcc4d848d5b2f552afd0a51f6f227b756b09cfbffc250f10b815a9f7b0. 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/ROIMA0100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422ace8166492b43512101efd719c73fbb3a20569718ba00ea51534cb52a3b6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ROIMA0100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c872a6548b455d6abdcbee26b62811a113862eb261f3120d11425e42ff7ee4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:35Z), 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/ROIMA0100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80f5cfed8d30a3861e3dbca46cd6727a90c8d1f4345732d039ab874145cef41. 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/ROIMA0100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcaf3c8df3f0de2bdd9d34cb4c972b8fe7f89e1bacbf547ad0c779706f24b6b. 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/ROIMA0100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b215b12e753e7701642e20310db4f43f72892d9ae05628071843bb7210a53ba. 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/ROIMA0600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae7cdbd79fc1f600a831871e7161ade13f5bb7d6306ab07bd875c6c357f905. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ROIMA0100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107b893f7a7d31626dda26defb349784a94437a363667c1ad6bf1d3158223202. 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/ROIMA0100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234467737fe8e248134204a84ad35cb476f2e50a23c37ec56a090315dd42ae8c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ROIMA0100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773cf7c4acf265a2645d3c7a036f0005819613af17c8d08a6d0dc2df37cfb819. 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/ROIMA0100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0fc21b98871f1cd66d008150f3d6d0980ef1b3f7d99f26e3a6892216719e45. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ROIMA0100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db927b6fd8b6413a5a2095952b0a9fbeeeba05af568522e11caa3a274f7d4f6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ROIMA0100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274387eada9b70a9230c5393508b5128bc6c41bad6bfc47b78cb911251aa36f4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/ROIMA0100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19804d692a322c08676248ec9996064ff51715d362c40d105f189a5bfb6cc971. 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/ROIMA0100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb2ae2314a643ecfc6bbfebc116572c822d79895a896a146872df2a322dee5d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:25Z), 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/ROIMA0100021.