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 0x3065b5adec7176e1f683a5ec7bab9bb58401cad30792fb32e48dffa64fadd305. 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/fe6b28de-b22c-4957-8cd9-b99ad1850d1f.json and https://artists.proofprofile.net/proofs/artist/fe6b28de-b22c-4957-8cd9-b99ad1850d1f.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 0x01ae7f011769183f22bd4dccfa569d4e386d6091d7f88f6ec8ed0c0e6bbd3627. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/COF015400029.
Tu Corazón y El Mío (2025 Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb2982421ddecdcb33c9991bcd422934be9a8a1661eb550ca3ff85d065f966f. 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/COF019400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c8a14c4f07deb6f277619683f6aa0d9cc1c2d64f049eb1a87de41ed2a9cd60. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:20:12Z), 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/COC016501128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1a64d6cad5388abc0e45d2c410010d8b74c6335442e662f15dbf3c44469a5d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/COF018400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa081aa07a9c0ef8e186442fb426c122e909ef0174a506154d28bd32f13a57ff7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/VED017701624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deeb9d0f25021cb1bead0ccfbec2b42d61d011c1e3a60e2ab22cf9071ebf4b2. 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/VED018700554.
Hoy...Gran Mano a Mano de la Música Popular
El Alma Del Tango - Orquesta Tipica Los Pamperos (Digitally Remastered)
El Alma del Tango - Orquesta Tipica Los Pamperos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17a79b4c9dad07a090bd7884e952118978ba517e2f5e81c0949537b8694efcc. 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/QZGLS2009246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d2fa6ac40c6de370b0e059e149afcffe41161ab82d112fcda4fe689345a540. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/COF019400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab6fcc5894a03981e75dadae305608647e640a21253e8d1018e1bbee3e0ca33. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:15Z), 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/COF019400663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639aa762598d76afda9fe35fa7cdeea951793b1ed3a1dc62c25fc9a8bafc8e0b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:45:41Z), 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/COF019500098.
Historia Musical de los Pamperos: 40 Súper Éxitos de Colección
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1a64d6cad5388abc0e45d2c410010d8b74c6335442e662f15dbf3c44469a5d. 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/COF018400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfff4ce338797dabfad5b3348dd88cda4dfdece01cce3b76903d76b85f137fff. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZ5AB1733418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf86a8aea42c45a3874b77fc3597c458627047b58dcb2619a95e05f3bc5cc4a6. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZ5AB1733419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565c6addfd465254c512610fde58447e33b98300dd1d310f46f262406144f283. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/QZ5AB1733420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc84d85c3eeb7c51f271bd2cb711303c765c6dbdca4c2b88c44067edf556ba5. 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/QZ5AB1733421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc431f55e6ac36cdbcc0996cd976e33acd7d2adf9cf0159acd76e23ddf376d930. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5AB1946465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad4233d8d603c89461083096365749bb2dafa56534da72ac1ff557865c5d36e. 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/QZ5AB1948244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34faf51e96a33bcb3abe2dc5d80091550fb6822432c787eb531bceb00d4bfc03. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCAGX2348925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126100982c60699e8684f7986fcd896d2ad795999907ba3d06df8a514391c78d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TCAGX2348989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311a672a45051f159ec833b3c28521d0bf7cb29baa722e4cd447fd60074ea332. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGX2348993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74a1c81e5200331bcbdfe409acf21b79b36b5c9e598c46f248825d936d71dbe. 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/PLH492302293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0e475e6b6df043860963e9a1cb5d39690cfcd49250ab3f7b1d11473779ebfc. 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/PLH492302303.