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 0xc2de745bf783987c55d476393562fd56bb2a2693421ca2fb0ec0062f6ef9a620. 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/6450c68a-f426-4a0c-aa2e-291b3e9ff547.json and https://artists.proofprofile.net/proofs/artist/6450c68a-f426-4a0c-aa2e-291b3e9ff547.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 0x568125ed9a680c59f78b6d2a8d98b40de113234cd00d5cf8040bbd29a56092f9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBLFP2369854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a90de0ba772a7f847598ed49f82dd747258303a877f3ee7c0f8ff6537a0d168. 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/GBLFP2369847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0ae642152122605910676109cff41a0acd9b77c53705a4d859f84e88c6b78. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBLFP2369845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8762bb4b6764d24d82b68a4c4d5f7d4d4c839931f6c4cc5593bb2d6473b072. 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/GBLFP2369848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e7ec2da13706caad76d43085fa5832cd0dad8b7bf83fa01e75ae4c98d53ca9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBLFP2369901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b23274dbe0bed15b761526794f62bf6f829e2b134bcb38c009bbcddf9ccfb1. 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/GBLFP2373325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e575d60f4a33e3941aa34d7c1d68bc395feaccdc69fd1ac4acf259068030ca8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:14Z), 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/GBLFP2373328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886e62a7f075c3527c5527ab9b5b521b50311226d88e56e8abea42034a7293a8. 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/GBLFP2373326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca51b391954e5b71e5a86bc456b2b32c44abb1a1b08ff5e9d8b23ef40eebcf6a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:26Z), 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/GBLFP2373327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d94e60c347e2a7deaead1f1dc71a7d46f931eb76d771bd6d8fa104619f9d90. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2374406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698bcc4bac42f674e42d8d029006049fe16fe178166a7fedecdaf1e0dbe32e31. 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/GBLFP2374403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65de96076709fbee5033bbb00fc2d79204b74fe5154c90a44673b06e92a8746d. 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/GBLFP2374405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac5a2227fba7ebc744fb6486c0c765b93224d9633c6aece534135776ac106ca. 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/GBLFP2374404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fe4042a3086887cd8bac20ef33ebb42b5424016540faece7b1f2cb361524e5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2375648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb726f2d34bfa6283499f7f270d477df4d375ec9b7d3579390edfb8514d2a0175. 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/GBLFP2375647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a68e9f7e7d02150e979fc58aad6cba1b776a3ea726e6b7f0c957a1ba2fe2131. 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/GBLFP2375650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c909472b8fbb73098ce1090e17f03cc62e6345dfbd642bca0952041a3665b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:28:06Z), 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/GBLFP2375649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd61c5fe78c3c3e7b8570bfa5e5566b8ba6282ff857a8e2fca7c1a7f74ead6a2. 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/GBLFP2377248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeec0e2e264900dd99f19ddcb0598c92fbec5ffe31fbf6ed93d8d62048a10cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2377249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56c15ed4a5cb7353d09cf6548dd09618d76a5e9126e06779f830147c69224c6. 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/GBLFP2377245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64811244db6e7b291091e2a05cd1c4bae339e95988022de1e9d306b88d8f7b4. 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/GBLFP2377247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa047b474c3d8ff28b5b42f94d169f32c350ab6a6bf06da882719762ff82c09. 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/GBLFP2377320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1afdab19bebc70af83172db621e7a178cc82156a0f4da7ea746126e0cf269. 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/GBLFP2377322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e1ed9b222b9b12089727fe06f715f5676e5ad3839b672aef68101e0350f4e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2377319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda8193e43279ea18f0d6d8c1414f36c547bb88b5efe60f0f6ed266c4eb195f. 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/GBLFP2377321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f8e2e882f0919bdd3b9a661cb14a7fa9b662d592b0c6a78102ce14f3bbd200. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBLFP2377318.