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 0x6af440145ede6161399cbeb2f6eae3bb90b5dddd8b3f16a2d7e09dfb8ccf50dc. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14dbcb97-7e72-4e81-ae82-dec9645193bf.json and https://artists.proofprofile.net/proofs/artist/14dbcb97-7e72-4e81-ae82-dec9645193bf.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 0x7c0c1df883685162fc5ba175433268a7146e2d6f6411dc363c44ba1471d67fab. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/UK3TU1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d1ea6ec93f8cb517102b43112d7551f6339b70e2fa9f984f7b7cf824acf287. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK3TU1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f230a2e63396c86a34955563866bebd0668bcbeb56c73cea2976bae6ebca45. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2033745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18307187ae2b810f8decfd33bb5425bfb7ca1820e06d9d5c84f3c4a442387b9b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB3Y21505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69f7bfe1fa04411dab744ded7d9250ae54dd0d1fbc1dd4a76b7945a050fa82. 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/NLCK41402722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8d95d84710ce6d9a13a9e126ab430ab764557b93e348d1f426666084102142. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBXUN1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc486112014bc8e424eec0890c0b05673c3951891cce0f08c2e8dd81a5cac078. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB9Q61300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68248299c70670742df4bf30b8ed5203447ac8370f52502d8c86380ee872bd2c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLE351300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3984039ba216395461214371ce519d9e7352debb338cbfdc9951f18951fa80e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/PLE351300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd9e3528f993e2fdd92d10b84c97ea2d197cb6ad4290d5feffe528807f0d29. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GB9NK1200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3594076d41023ad2828f30d7bab8f4f4f888e4c651b85f183687c59326cac73d. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GB9NK1200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5608d1bfa707dc2b1a6fc3e02cfe661e53d449b98451feebfca79619bcb649. 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/NZIN01200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8edc08028a052b46a6265a07b0706670018a732cae43c4a4e6ab69755ab6ad. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NZIN01200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b42fc5b168d655d30787397e2b5c8c9f7497ef05ce6796e64833c237fe62b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBV6P1100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14518a4ee97dc7284277d7d984973adc545c70ac84619d27d8edadcd00d3c048. 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/GBV6P1100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a7cc3e5df668802bc64387cb620c9dfe187e5eb59505795c4c9ced93693c2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBV6P1100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962e35712c0aa1af79eda040aaf1c8cc75e4ef27b5e240eb9778c2c32aa9e555. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBV6P1100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a03e66d6c628514c343123a6cc7cdc937e8c8f50c39d157587a30fcfc86e6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBV6P1100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0198593f4c7d63ebdb54b752812b5bf01ed0c6ffeaafcec61c060fe7541778a4. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GB9Q61100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5e8ce63cbb1f006a6ea0c60c9e42377da5ef2d80766e2970e37ec89cc2fe63. 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/GB9Q61100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4648a5e7982e6abac70f2252d15d2019ffa5bab7ec030132af59c612a03658f2. 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/GB9Q61100011.
Pressed Records - Dub Compilation EP Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78edd5873a6341de6d02e378277c4c5517f389baba75ca598b466df325b1e320. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLCK41033606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609d98b5cf774932aa79b8a18a6ddd92183ec880e881aaadee267212c510205c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLCK41033607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed204c725d11744f8e2778086948effa939bf603c21abfdeed617289fe5acee. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLCK41033608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deb0b34446ea2dee46911962a492c3d56815f4c24c1b8ac3f558b4ca566f407. 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/NLCK41033609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aab90d00568cc26ac44c7c975f35b97a1be130f633e62125835048599689c5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLCK41033610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36813c2b36a00130f627e3f0f770f52fabcc8d117bbc8067b46639d5e2d8f47. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/NLCK41033611.
Artikal Music UK Presents: The Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c50550a9693c902f7df35ac7341b987cc25ac8fbd97c3c63170f5d883091e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB9Q61400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d557972c45015dfb0f71b4709e6d4ee08492524ea179ac70466a81d6221692. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB9Q61400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aac4d9712dde4891145888cc6fe374e2f5238e498740e035b18c0814f9ff39e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB9Q61400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5500dd79ce6c2ddcf5c72f286e7db3d6015266979dac1ed5cbf6dc7f2f79effe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB9Q61400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2789c029a79783e4e78196a3321674914421c6032b944655ebb8ca695ee32c37. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41018666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0ded3b0a8ef8a8c7d8b2aa51a4ca6d874790aea383840b16e6524ec232a55. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLCK41018676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c89aa1821da198e64fc86572fd46a2c68891aa7712146d055fe44f4fcafa6e9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UK3TU1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6222400a966a26df88f3cce5a0968e43391290c7131ea4e7cba0437484cd4257. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UK3TU1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230c82fec876c466a3288d4c36dc2b2ccce03d22dfcfdbaac034af997619a68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB3Y21602001.