thumb|German matchbox containing safety matches. A matchbox is a container or case for matches, made of cardboard, thin wood, or metal, generally in the form of a box with a separate drawer sliding i
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 0x66ad5e1b4a05e1faf57374e6a79c91e4f3eb691cbb68671c054ee5137589f930. 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/c24f79bc-82bd-464c-8308-560f8118b602.json and https://artists.proofprofile.net/proofs/artist/c24f79bc-82bd-464c-8308-560f8118b602.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 0x42769218f00c84bc21a9c2bc030363a355fd5d519f3599893a5042dc8c963ede. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBAHT1000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67e28e9f9d12fd16a884a3eb254a4d570ba1f4375fdafadc2be6d91dc89365. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBAHT1000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce16d17139d1bd43dcab02b49f7ae6006eafc78f93b34806e5db2e3dbc7fbf8d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBAHT1000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affc8ac61d468342c2c524ab63452ea338762067e7f1523683934a2c877a8d5. 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/GBAHS0500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dcbe9cd62965ec66de66849caec22c53211a8c5c527d721c041279546b683e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:08Z), 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/GBAHT1000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1fbf2e034a5877e90ef06732da66753d1b6f22378fefa357d3b08c99be841. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBAHS0500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fe5207d4fd93255f2ba1f316b49c9c4c03932462784468d1be8bc655cd2cd3. 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/GBAHT1000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635b853c6fbf6d501ed50abfc91c18c589c3cf0ce23b0aaf3fd25ec80f6eddb. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:32:51Z), 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/GBAHT1000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95162d20d2e3025be42e1117c7943912491ab03007a5bbb89f21b66fadc32b88. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBAHT1000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7b98ada7f9e1f14821b81123191f0ff6063fb645ce2310f2de1f9032436e6. 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/GBHMX1648202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729584632ddbb67c7d4ccedf089442fb12540af8db826528d38231e32237e908. 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/GBGNB9140212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2cdad1496aa61910b01cf7aa23d9061d4cd142a115a585697c384978ba0e17. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:41:17Z), 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/GBAAQ0130101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc5aa3cce25098bfaf03e4851ec1acc3bfa7bea610cc270e570c28648e98e62. 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/GBAAQ0130102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98a5ef249963b2cb9035a8811365a4c185f93ee74b5fc703f819d8599232b1e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:32:26Z), 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/GBAAQ0130106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b6fef05313427abb6af3771f7925ed6be45404c49c3babadbf16b1e2b4c122. 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/GBAAQ0130107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351e89388683ceb7d48f1c24c02de5b0f1f16e504a6db76213b47e84d7e255f7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM20947066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca423616277d6abcc0ffb560dc1f45b46ed2d8b322aef63fe889bd7282e16557. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:13Z), 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/USHM20947072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2401bbefae23284628dae2985101d128a45ffb313ebbdb96b2ced12c4600ae1f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:50:19Z), 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/USHM20947080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cdd1fd7641f3b928ce66b8ad8857ab87b17fe74f6a68251de9106873a34db9. 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/USHM20947089.
Access All Areas - Matchbox (Audio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1a0d5dc82a5eb95345a667dc8b58db95ea78fc9745d73f8711aa9b35094a39. 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/BEDO61604881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779cf89a588a47ae0f2d0c6f608b495273299da9d8daee01dd58937fbe4d442. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:20Z), 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/BEDO61604893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fcfb948d4f89b38b190c531c2dcc2f4092298b689d2d7c3b157680591c9d64. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BEDO61604898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7452e7ca9db20c33e33da897580b88b21aa8aa1490afefbe698b5ff717464bbb. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBAHS0500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9257e1e5ea0cbe628af506a0457cb5ee50b7950fa5bfcd7acb9a2415916e25b. 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/GBAHS0500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c1784e2e63cbfb2d9a0a42f5746fec4302ba4a92b6506971643abbd3ceb841. 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/GBAHS0500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e238cd40b52fec83789611b7144aa7b3aad42dce86a309b494ed98eb5bc159. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:19:47Z), 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/GBAHS0500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05741deba2eaaf5541d5d7f89a236f504bdaf2702ac611cb5299f69583af9be. 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/GBAHS0401427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b7c79a1528ac4e207db85a92863718eaa0551bfa4309fc485a87bbe8ed7757. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CACWV2546706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a85796a1ce11b3fce00b28008017c4e4882dbecfae22a76cc3f0a89d0c42ceb. 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/GBAHS0300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9257e1e5ea0cbe628af506a0457cb5ee50b7950fa5bfcd7acb9a2415916e25b. 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/GBAHS0500648.