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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee7972540fd423d5f3c3f19742f1a1755fa010f95f00a538fc37241f257b793. 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/69563fa5-c3ed-4e6c-9430-f29b18f87599.json and https://artists.proofprofile.net/proofs/artist/69563fa5-c3ed-4e6c-9430-f29b18f87599.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc226bc02a63aec9785ef1f781cdccb4f679df2f9435d4ef58479a348e4a91e35. 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/TCAEI1939642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70968bb6f66ea22b1795154f598e544ba92befd7ded415aca9eedbab55e7c7af. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ41990428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960642909397a4721b89db02fb5591742d35997347f5d2eadf5e5a1f498ec752. 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/QZHN81928809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78ae01aa52292c63cb568420c982c3d0088d25258c04fcf9cc86b1875fe7e3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QM24S2009072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e778937207c60e4370c4ff5fea3220a351db96d200f97a33a687763a0ac09. 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/QM24S2008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c146dda54a207544431c5496ea9c6051f112147362a82e86ae0145d04161d59. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM24S2007765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab806690d82073c123c4d7e2e124d4b23f464822715680f9bf9542085e76f4a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPEW2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fb9dc81672af8f49cd1d0e817a91ea213e8894ab8f0f8ca36a30c110a9db1. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZPEW2103984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafb6726aba2eec3ff5d1f99787bcfcd7848a5b24aee21a3b58b51254115ce6f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZPEW2103986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3796a7ba6cf9031a8d0b6467b07690b9f8a07ed270c5aeab6d8568d2945ca94a. 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/QZPEW2103987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f693ab1bf3442ca4617991049d9f57d732993a470363550651ea9f14fb36e4f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZPEW2103543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c821e6c147e56f4c1f65b200c7d2523ce1c2e422b8c27f990daa94d735c734. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZPEW2101100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4c13ce7b98a60a644d6fdedca7dc6436978886f0fabd712cafca6ec2ff6762. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPEW2131987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599471ca741a5c1e4c3ab19085a99ef1a52f5122d556c7583f27e552fea8d4ba. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZPEW2133005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9819dc2204e0756eafdadd756dc3aa41ac6de4924b44f021672ea762ada0e3a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZPEW2212492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46275c46d4bcef737c325fa5d25bd0ce85660fc8489f1ac1d20dc00698b35b46. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/TLREW2221599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b310e06cbef314399d3a4339e3f36e527fb3e5566b1d32c713a6267d54ffeb. 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/TLREW2228918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8007d39644d0e2f80f974734d78a0b51ffde7b1a7ebbc9e93808b0d13f4164e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM2305277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a624076f5ad761667aa3f9dac12b2e784beff49a4e888855e14de5d4fe19e0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZVEM2302282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab91e7d8f15a339686a861c34b9573c3229893ba5355942d2f7dd4f881573b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZVEM2302283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfded0d225f75b4a48423c891c298dd625d6e407824abd910a027bad6c8d0f28. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZVEM2302288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7cce5ab4a4eb13cd3e24cf7686807e422eba9229769b43657cb6449a37579. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZVEM2302299.
PANIC ATTACK INTERLUDE! (A CHANGE IN TONE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc45a4b809ab743d953ad8831cc7bf2141ba4e22caf1c69eb0f04ba11d08895a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZVEM2332172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a7051b099403915d010d1063e66ee14f27adfd907039fe2923babaf705562. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TLVEM2470383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8bece76dbf2974fa63adcb2be316cde854a4cbcacc4d06f7a8541eb0a607d9. 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/QZPEW2454305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0267356090270d538a6607f30ec4d2a0930cf039faae1a999e3ea077068de35e. 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/QZVEM2335727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f642535f4910aa6e3fb0347e710cd2200866ff258be047f199fb06aea23e021. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZVEM2332173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe461081b35bfbbfcd07e3158cb3ccbf2cb6b05afa9e67f19528fc95a8b6c502. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZVEM2324761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d63c1dec2a18797175259590e464d0b5a4f8ab7230230d9769309e05bb266ae. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TLVEM2462372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a203866e5ef7e7448379c78783e3f93b6bb7cddf19ddc69c8f820a0863bbfe. 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/QZVEM2343143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2979eb222c521707bb56505874adfcd8754fe97628424e92b1b4770577d782a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZVEM2324762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdabf5794761c5937b3eef0083cc01fb8112f4e101d525f2e0c6897a711bddb. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZVEM2326315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21076b3bade0662091e4819c04380da90629a0e6d33997c3719d4b32b24c26df. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TLVEM2455467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2498c39edffc882509786b212fdc11fbca704f858b46fbef20f6c69aec25a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMER2063504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b984a80899615f9ee38af895a24f89c9136d94eb9a443414160d451cd262b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6XY2146422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10388ccc6b0f4e11101a2b1088f765eafb57d21aaed891941303d8329d6b3b80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1451994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51613d8af101b6c3d4931e69f0c657b902d6361c9fff965e4bc9143292e3e72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2167979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b984a80899615f9ee38af895a24f89c9136d94eb9a443414160d451cd262b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6XY2146422.