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 0x7f6b51cac169195d648ada7aa34619ee092a6ae1c5d3456a906821e12ea5cadc. 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/8ec4b98a-33d6-4a00-a14e-507c79576342.json and https://artists.proofprofile.net/proofs/artist/8ec4b98a-33d6-4a00-a14e-507c79576342.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 0x60b40742f42d7804042ddb404c6c4e95ae880264e49c24db1a3484396535b984. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US7VG1705581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c616ebe18797b988233a9847136955e9536281620ce988400b4cc5cdaa42355. 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/US7VG1705583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3246d209e1e0e011bc675ddc8f8f801844b2e6d041be7f793b7e2466b148a3b9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/US7VG1705584.
Popurrí De Pirekuas: Primer Amor / Lucecita / Mujer Interesada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235ec5c1bbcb4e3de40aff0d4671d066e7ab9bb66b9ebfbdf79f8c16345ca31a. 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/MXD481810920.
Popurrí de Banda Machos: Las Habas / Mi Chica Ideal / Güerita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaa3dddbbb0825fa7137238159cbe1e87a78487e77ee4a13712db4d7bf7886b. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZ5AB1645520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8e817290b1a7c0929e03ff46293b306d2725d1d86aa610931a3629bc7bb2a1. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/US7VG1705661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b11889f368683cc88b872a10aba6ed9335be517bdd81f66b6873a2a0c3d4e5. 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/US7VG1705665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef997e750e652b73c339440c97157f61216345ac125a7861b56dffd1d95fc51. 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/QZ5AB1645427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb59276c13de71c28d102b873e871d7f669dd17c21e3db5ca3392eca16fb377. 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/QZ5AB1645428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f93cd4c70392c6e2d6b5aedb60d2434761fd32d6556963eb64b98b35641e49. 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/QZ5AB1645432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54914d27f1918a02999510896cacd2ddc33c3ebf1c4c4820661d18ebc82322af. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZ5AB1640313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70376e969dfc9faa48eecac1fb794db74bf9ad102f8c65999ad2b46bb1f0007d. 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/QZ5AB1640314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42ac4abfb80b6390e31a1edee953bb8fb5abc7ca4f9e1621e4a811c954e2615. 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/QZ5AB1640317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf7436177cd08b6caed7144145c061c447ad48af4ef5aaf88b4d3a686f0e3e7. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZ5AB1640319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ebd309f9f0598265d1eb898695509d373e9020f7f9428c6a08762ed328a606. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZ5AB1640323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f7d4ea73c861512ece53789a2cff9b8cbc40691312cde51c856be8f412c6a4. 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/QZ5AB1640251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf0cd3283fb8595a3c4bb1c161f33a531b6e938dc60bc329fcdd64b038ffde6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ5AB1640253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97db62d072e55e75a9da0b0ef8b97f73c8222a224f5f60d14f81ebbe821011d0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZ5AB1640254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d30b6c9fdf420e1f10285ae818c407c4e5e0cbabbde8fcaf5f4c440c2018ad. 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/MXD481813530.
Popurrí: Tuve una Novia / Está Llorando Mi Corazón (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a23a56862ebb4f8c41ec6fdc5393f7acb487c8860255096bcfd90ec85f6d6. 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/QMANG2201708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145130d83d76727aab535fcd21d861dfd2997edc844844fd73ee3470f28bd646. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:28Z), 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/QMANG2201711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11836aaef657b2f7e0c8a06cace60b065f7458c07c783fb54a4038b6135af90. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:24:00Z), 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/QMANG2201712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01777550065cd1957729d117d1a5e5cbf134891b10d98c3640d7999dad98171e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:36Z), 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/MXD481813585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0409c799166cb18d1350913709f5248ccb3ebaa77c38ce68bcda0446df94c921. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/MXD481813644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc657d3a57c6e5f2bc7eb843882208845dfeebdc94aa596ae673a5b0a4331a6ea. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/MXD481813645.
Grandes Éxitos desde Michoacán para el Mundo con la Única Flor de Chirimoyo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99d5e1350ae7694ee3585c77a3dffccb9a6232970941816f48efff6a4eab31b. 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/US7VG1705655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03add19bebcb045faf583a38f064737d0a68de81f5d15fac062f14c13bb0bddf. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/US7VG1705658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dbea41ee53c0921062d18b1cde8e036daf9dc6ccbeeafc2d92af7df8750280. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/US7VG1705659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b11889f368683cc88b872a10aba6ed9335be517bdd81f66b6873a2a0c3d4e5. 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/US7VG1705665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b62193364cef4fc4cef9ceab5d519ce987bdcfcfc00630209bc8d783809e4d5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZXLZ2540984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d862bde2eb24dd18b61bdc9ed72bfa56827b513a34522dc3d4466f67408531c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:44Z), 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/MXD481806744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efe853aa5a8999b9692b08fb76edff613b34d47cd8e0d33faab9b79e7b2fa65. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:29Z), 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/MXD481806586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6b32194af8cc6c52f14eb44faaaac156963e745c9fe74cc6f5c8a57cc378c4. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:45Z), 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/MXD481806581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff533ebc3e8276cd45735f0dc58bffce0e42b7efb55f154eaed1b40b189fb6. 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/QZNW72251878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841e58e6b55e9eed556ce9390ad276b785fe4d438f3bd57bba02b4a141cf3d8e. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:54:25Z), 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/MXD481807350.
Popurrí Michoacano: Ojitos Mentirosos/Rosa Rosi/Mujer Hermosa