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 0x0e85f838d476ba8dea04fb243509bfaa4add96d8d368437852318420be9de1c7. 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/d1b82c1e-33f2-4a99-9302-7f1d43d61f5a.json and https://artists.proofprofile.net/proofs/artist/d1b82c1e-33f2-4a99-9302-7f1d43d61f5a.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 0x7ae4902a41ca3f21fc1c985ffdcd33cc370c55467447a9c3c34218fa82f9f9ec. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1D2350271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64403f38fbc0a911699cb4e5ec53d7efe4be3bdcb82f98d9570d39dad44a905b. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/RUAGT2346340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cafed164912229310a2c494240dd8e3ac10791019f3fb239d034e0e481d5086. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:51:03Z), 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/RUAGT2379433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d450abcaec93dcd4f9bcebcbbbe255dd927618e21af5a554f10d3ea1d534c71. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUA1D2453671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb84d06f743d0790354f859f9bfbdd426e3f5ffcca20ca973b1808e4cd6cca01. 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/RUAGT2408817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64e153eb708d57e310e3c4ceeea3bfc773d13087cd0840bde583d985a077797. 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/RUAGT2437756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4213cafa8a3c8e8cb2b710a866e373bb00afe256b03c9b76f85359c6c45b1533. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:48Z), 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/RUAGT2449844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d93e6ea0e641657dc876449a2c0a34f4f854d23cb1d05aac91d1e146a7cc5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/RUAGT2449845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f80f4080ec80860056bb07eb6f359d26befdc2af8ce028ce13ce40d7055c15. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:30:01Z), 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/RUA1D2502025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f92e042edebd07f438082e838ed50e5f62968351786dff0885a8a7d3dc29944. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/RUA1D2525159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94721ff53b80cc43d58439c46ed1dcb2ff2962098ecd5940184cf6a1da899c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUA1D2525160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0cc5a2370ac0aadd0b7d70a4a571383d89165c0c0bc912797f803c36bdadc7. 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/RUA1D2534081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15778543b33b17fec42c3122cbf97ada078e35cd92dcbd74d7ff07859c4893a5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/RUA1D2534082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc788d523f81602a3320704e52e1422e792e83e046b0e8615a94d261c948b0c0a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:58Z), 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/RUA1D2534083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb7a17401dda01fcb4412b11296671374aa44eb8f078149f912f175739baee5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:54:58Z), 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/RUA1D2581452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf1304630712cbcc706c792037cca644ebd15b5721718c340fe91f5e34395e7. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:08:22Z), 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/RUA1D2581453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be630c4e53fabd4a7d9dd3f760a87791ed314e4dc6d21ae7abf5b6d8c16fdff. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:55Z), 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/RUA1D2581454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421e28cfa6c7789ed9e120f54f9b716e006bbf1e9f58fc5013754a0ee445c031. 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/RUAGT2516711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251e460c495b881872df378b3292b7c6b11285cc2e2ed85526c38942ff468982. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:36:44Z), 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/RUAGT2547651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f2b548bf8631512595b8f9ecbe920afd1fa8f1a74976f1409de3fcafd09c8d. 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/RUAGT2565497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08b3a6eddc731a92d70db488cf2896755be8896a2ec65442feb09573119ab0a. 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/RUAGT2565498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf6e0843d3ea892992d5a4e9379f01caf93190c0872ada856585b998cef6b93. 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/RUAGT2565499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6b26542bd6acd5253c31cac8158917b24fc13d513a3b6c797d0e9b91b804ad. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/RUAGT2585982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe889d4cb609415a4e48efd8cfb08da7923f1196b689c1ca4aae65ecb9a39eece. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUAH62500226.