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 0xbc72469c404e84cef375487e82dcf56acba509a4b37abef54a63a9f506ded813. 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/84dad8a0-90de-4e76-a1a9-6b5bdddfe9df.json and https://artists.proofprofile.net/proofs/artist/84dad8a0-90de-4e76-a1a9-6b5bdddfe9df.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 0x22d4806de7a0686b4380d7b96e5d4ca4f1c436bf1bb5f9159f1d51bee57347f0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZDA61972250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2977f46ae78bd436bd2a5b5ec7b0bb7021783c62bb3faa7a94c93807262e7. 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/QZDA61972240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ab4331dd191ead09395c94ea46f9ae63e8b0baf8a4d5841aae67bfaee8c3a. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCACZ1768396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca14510ec921cf4ee8730c33ef83609211a0292749b5ebc55f8cffa3f98024b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCACZ1768176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967b7545367916adb34ada0c01c830c285411943dfdb799d61b0f16a4d3dff5. 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/TCADC1743303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14635d75dd479e1909e183a5478750279e056bfeaf07e79fc907627f6fd7c14a. 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/TCADK1891683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45919e768ed6f9094f6d583d283984f45e297101e9a01dba22c1a17f143e83b7. 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/TCADK1891583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fd4484ce3dc7d0c88ec81f9cc5e58d0d247e31525600804a1644ad8086449a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZES71901871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120107b87c06e904cf40fffea89631aa0a724cc84b4fb5e5085959bdea6a2c2e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCADQ1860825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b0f04a129345e23c4c9ea1c13fddbc20690ab42aaca85793c55c450d98fc60. 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/TCADS1826660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6781c68a097ad0743b148dd8e62f787ac28a36997e09fac6d3add22696c2c22b. 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/QZES91852061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea02d3a4827046a41ed3fea0fd4e65b45fc3a8333ce195f904fb8abd40ffe21. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZES71925133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb4280b0d8515655873b823646c66d5f5fe0f3b29518495e7d1846b78c2e5d5. 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/QZMZ92000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012bbaa6db2736d6f77684b269b784fb757d4d6829df55417102477ed114467. 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/QZNJV2077226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792bca3a6518f0758cea89f9e654fdc57166a0e6c1229d5af302ed21ed9d05f1. 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/QZTAT2186754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b6d51f20af3c1240bf4caefe681c8b99580ede50f7e1fd693f61ab942f5ae. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZES52226162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd980b84ca1e2def1c44cb70a7c74d47e4757f1548cc6aa078b5644a78f02976d. 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/USLZJ2278620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d5fd66f0a7cf2bc31dd1a7d33f92b500b42c5a976aaffe0704d47c4bd047f6. 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/QZK6H2232669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa906e1f506d20b83cd192f35c9e2c432282a637ab7123ffb127aaee7d05d9373. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZMEM2290959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107cdc41e4db5f82fbcb2a7b99f91b51a14da035efda08c58577c1a5512af021. 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/QZNWQ2257503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f8c1c0e52d4274b79f102d3e8ddd3fb3e1812d7f1d363311e8e64c63c881d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAT2252880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bca7b7b1eab5f7d52e1a46f6850a603de0a7cba46e4962c01cde67777658aa. 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/QZTB52223193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac489c589a8d98746391815554694b48baa3436921f73266b5ea5dab9de2260. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHN32379242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5b1bf6ab3b1c27098aa9782ecaf3d8cd739cfe12f509bf4db282569974a6ca. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USLZJ2449305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa514b0da3dc95a9eddb1c722985e6a778b4d362a66c051d35c5d10fa6ee8d876. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GBWUL2450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf33fa495a91f9b2fb96def15e579bd40c83d0ccf0c569f4bda9395d81d8679. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZTRX2430082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535ea758f5e0efe9aee42833d06d71bd262cd6b6fd62b88cdc2c9fd30207631. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWV32406534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981ba158bad2da990f524e41e654810b16c60910525880426401d87e40c93bd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZWV32458991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a67c6675828ff72c78cf9679290016d0bcbc589f8ab82ab265807c57f789c45. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZZ8A2450377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfa03152ebdceabd3ea0364ad6ef2a42fc0cd4baeb57ec67b54f8c0323e900b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH2572987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d93eee2e164c7496ec330b271cc12db8c47737a5eba876ea314b249d870c94. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZZEB2458183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ce07c7b3ec3efa0c2212262cda23fa52cec5737f060ef9b13f3ae498674590. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZZEB2458191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d61e3ae68e78ebf4197e1edccb6ddac20d033078087ab39b3962991a0d3c7b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZZEB2458193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6124f68030fcd818ea5fa59fa712ee3e344a4ee35c285b4abae33361afcdbaa5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8B2507822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20ba7ed7ae4b14b1b539cc7cd571b9e23cc3d617ea0cfc9913083f4902c1198. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZ5AB1984123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaa0781231065981afd7106edf74712c5234243202434c2dc4ef834b70f64ff. 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/QZGLS2186838.
Cementerio de Amapolas - 2021 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1dcbe42dafa2be4951c2c375a376692f3c2a6b6b94c73f58d3456af1f6ab1. 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/QZNJV2135983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05fbdb22ab6fe6178e4230e2e2877dc274d3ee8dd213568618c9a279489ee6b. 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/QZHN82175286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec319a3e1c55acdf801da586abce5405602a5aa86cee291b87cf425f0b6f5e30. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZ5AB1955405.