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 0x4859e508a61de3b12ef01240c8ded96a7437619429b81b7d419bc0ba9cf5ce76. 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/4eca174c-4029-41c9-9d4c-7e324129c450.json and https://artists.proofprofile.net/proofs/artist/4eca174c-4029-41c9-9d4c-7e324129c450.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 0x5051ae8756c55bbd027e3b468af061655c3652fbbe14020068947e0ae2f6dc59. 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/USA560963585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb834a8c51a9c1e3b8d6d9a3bef037583e1e4d115fd5ece37a1746501a99a50c4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USA560963587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc498406d6431cd714087927167f40b9b793b12388a08609883684cb73e078. 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/USA560888152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1529b82ae15b03c340ebf82fdf7e0b64f49019365d1a63d9cb9a3a644343e38. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:30:10Z), 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/QM6MZ1495341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7337b85fb545eb884b6ebb6a70ce6ae86c2c288ffcd9c3bea26a0e9ac0d6c4c. 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/QM6MZ1495344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1f447f2362470c44f07faa45a6c809d94d6deac5e4d7908124498ce9e771c0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6MZ1495345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa59567427b36078a31ad12a2f91a2e6532794123c5a9b1fdccdaa78a7c0f38. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6MZ1495347.
Jorge Reyes presenta: Tributo a Chano Pozo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6086b83f2dd226906c60e9605fc814306e43b793b7d319ce96ca233834ca32b. 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/MXF470500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc381a416559c6797858f1f47c015cb5bb7cc3278ecd2500565928f205002fc. 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/MXF470500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141d6857a7719d6c0d47d6d2227a61373ed94693f65cc302f5bb3242f3fc622b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/MXF470500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a92649ff893a257f01a6f153b7572e8c6cc2d1cd2c9f44d8b19f5eca4729f. 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/MXF470500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f0e3471c917d1c9fa9b53f9664ce7a98584dc66481d8bf6ead2b7b8091c88c. 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/MXF470500033.
Prehispanic Mystic Rites (Mexican Music)
Rituales Prehispanicos (Prehispanic Rituals)[Mexican Music]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf406a0a0791edfacfea3940cb75b4ca7ab5df063ed8259f21787e5a2f914f9fc. 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/MXF470500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05082bfd0989a609b352fda07e2591bb72461811b3bfa8c90fdf5e992c63eaf. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:16Z), 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/MXF470500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ab81e63a7ae9e93b66675c06e2aa7db7e0afeb10f27ef8a06c5b0f48fc906. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MXF470500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf384d87603d2fbccf0741c91cbbd4772f01152213ba3e352b575a33f536702f1. 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/MXF470500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9087ce4fe7e0c6cc2afab5eadd6d2e6b3f114d09e4d21b00a75879b9650eba. 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/MXF470500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbb28840d168f8025ca0b0c57549203108a76c0dd46633becabac65d72d1ce3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:36:30Z), 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/MXF470500616.
Music For the Forgotten Spirits (Mexican Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228ad56ebdb37d36c2a6a64511eaf0a04c3c49fdf546d1e145e090a87fd6640. 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/MXF470604796.
Música Prehispánica para los Espiritus Olvidados
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0402baeaa4530f84aebfcccafd49bec980bd3e08f03b7900e90a3a365c83c947. 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/MXF470500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c552e19951bfad5d6b601a1f65b4e4c8dd61ac9545dec1ebf5655a7c91f8c2. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/MXF470500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d7fb76494aba8ced0d8ba9453d6004fe8c726d3a2046be89b0474c2837b318. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXF470500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35acaacf1e0240c3ee1acb590a7f89e80951582c7d863b68fbe43bd57da8dc3e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:10Z), 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/QMQQH1607808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb3c84cf6a897d72122dfaaa6158078ca44d7205e73b5be309e12ac6c883f42. 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/QMQQH1607807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b123a0ce628fc9126c41fbd976ad39bbe147ae5221cb65aebb809a35fee21. 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/QMQQH1607797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed52807fc915763829e8ff733d1c80b099e99bdd35a854e9b5391824562c7697. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMQQH1607802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ae288a2b3355dbac71509b068179ccd3202e2cbf24fb11cb0b894bb4ca840a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QMQQH1607806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5768c088690aba283e18cb97448fc1f1a8196bc8113a7d770cd70f7afbf42c84. 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/QMQQH1607801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711881749e18885d05e24a0b595eb94e3c3e60d735d3c5a39e51a3f4e1760365. 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/QMQQH1607803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4646233e4e3477bfc32fea49d3cf86278566a675b95f33ab4f7d9087d7281. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/UKDNQ1535031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b10e31226a01deaab56e019f27b795873225ba897c207a69cc562203a477f0d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/UKDNQ1535033.