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 0xe5f86509c4f4943f360d6773b3bac9658d4643b38acdb829a6c4978baee4dc06. 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/d4e7d9c8-28e0-47c4-ab51-9587c04382a0.json and https://artists.proofprofile.net/proofs/artist/d4e7d9c8-28e0-47c4-ab51-9587c04382a0.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 0x5da670709010812735fef4f549febcdfa894e51dc939708886aa5ca87ea1fed3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DETO41537446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15bd72ecb7ce5a94a03575500624831f7032a0795bd2cc68e183708327c7062. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGWW2081140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726b6b62b0c28127a507503a601c45a8d6c47a8be8f1a239026b484a924898ff. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZGWW2083819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0827fe1a8434d073c8f492d3cfc57ee48a609980ae64b04a95ddd33987b1571. 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/QZGWW2083823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb139e6ba918e09e0218924b5113e6b334222a6101d12332cdcb498099ea060ab. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGWW2083824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e613c0afb3a7e8f45a569f71a8fd01af7ab61632ba66d2483dad7f070c8bff. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:32:30Z), 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/QZGWW2083827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2513c1e50b418dd1565873d8bfe94dbd023a7a123a7ec251272c4037df664d03. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZGWW2083828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c7d8e1d64be392273e05b07188d889c7256fa223b53640c82ce690c69cbb5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZGWW2083829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeaadfe534bdea3e57ee9f07481d68a9190b30626635b019c308710bd06d7e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:40Z), 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/QZGWW2083830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42f92105c0b64ebae98543d60b80456129c8a0ea60912b8dacb01fa52d194a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:21Z), 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/QZGWW2088487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e084a73082b1a32e40fca88a228663034571fb94c8ac88dbbca3e8fa7026bc2. 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/QZMHL2093272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29efec91b1417298c1d1d5738e9ec8e16ed4a869a0c52ebfb3c3208b13c916a1. 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/QZMHP2030617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e0b87c6301da25427f41f81cd9172c71f31ccab046c605f3aad5ebd4a7950. 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/QZMHK2016543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204caa8af421f23beaf7e579a875cecae316b4bc62cf4109a422a7a02558cfa. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZMHL2004029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0da8cf3a7f0a80a3f09a15da66ec24fddc5e111885d214fe01b371f5145b4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:08Z), 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/QZMHM2023258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29efec91b1417298c1d1d5738e9ec8e16ed4a869a0c52ebfb3c3208b13c916a1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:11:15Z), 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/QZMHP2030617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204caa8af421f23beaf7e579a875cecae316b4bc62cf4109a422a7a02558cfa. 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/QZMHL2004029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e0b87c6301da25427f41f81cd9172c71f31ccab046c605f3aad5ebd4a7950. 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/QZMHK2016543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0da8cf3a7f0a80a3f09a15da66ec24fddc5e111885d214fe01b371f5145b4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:39Z), 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/QZMHM2023258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019508b7314510569ec16c717fe5ea0212ccc3e825b7a32360bba284f4f80095. 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/QZMHP2059901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82560112f1c6363bc9d9cf53ddf7bad7d83c3715ace7b96aea539ed8a46bfcef. 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/GX38U2185746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2637246a135e3b662bc3242fa2b76eeafde1ce6a7f75a6ff559cc4aa06da8c. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ALA092100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf21bdb43e67b602db0abbdb2b0ccaa1ffcaca7f99bad9c7bcb26c5bff4215c3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZS632267105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca836462bba8668597083ea4a139f7b0f6215e611195975aa50853e569ade93b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZS652235327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01bdd68ab31d8b156448d5507a6ac1a88a026e3d3b77235d89a3968968e3be1. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZS672210680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7469ca2147e4496d414e97600b258f09d4dc1f45f37ccb40551382b14a67a81. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZMHK2352175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18c4b2e67adbb0d247ababeb12b24a44df424df66b2ae017332d29149f0a1cb. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZS652379278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45394d1cce703328d978393ae393df3edf40d9c187f03fed97d6a70cc6f97891. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMHN2237335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129fa83ac0a589ce6b9f52b120a1e76295800e469fda2666c5d2da50539d21e5. 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/QZS642407706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedadad2b33a9a9bff766b4d2d03b18f123a62f3047a043dd5288c824951b9ac. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMHN2431923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2492f44ac6e53f2a486745d7d12f4a8afa44dc8fc990f048929ad7850db2a8. 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/QZMHL2419640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c6ff3cf8584c83abcc46db0680a98dd168cdb2f8c937bbbc2c079964fdc34. 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/DEUD42549698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6862fe19b17e8fa1a8d22192360bd01ab6a027600de3a87c740ee3d83ba44. 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/GX7852500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19117e7d0d10f4624036c471fb02aa174e59d9a6985e3f2f9aac00a41eae5572. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX7852500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90431bf8fdd3d7a15de01c5f3ffa062d4f9be267800770d5d3044c1092f313e1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GX7852500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d29dcce95f3f68d803411b31732f4f9ea0641f80119eafbd424df2e0b6ac019. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:52Z), 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/DEUD42562277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5059274b7c27b1872412b7df11fb7139f8dc02c4142d1e3dcc0e2b3fd89322a. 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/QZKDK2505575.