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 0x62b1c250ca1753294c77731e60428fca9350fc46d8b78a43111447dff2ea71c9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3ec0d6a-5377-4208-b161-8103f4cf2383.json and https://artists.proofprofile.net/proofs/artist/d3ec0d6a-5377-4208-b161-8103f4cf2383.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 0x1560c3fe403a888796fab7aff5b1f2d4af949d85cbc02620d6d88065d48dce2e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZN882073114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c56b73f8bcd4c71d423fc552ad81b5acf9d55e4bd01c8da96c707c0484c5a5. 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/ESA011921138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123d5c56c85d249c7efc91379c503219fbd2fe5c559a2b97cdb53932bf7abae0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ESA011921140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ac430d03839c4e38c7018a18229b4364e7745bec5c39c1a5bfd6a791cce3bc. 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/QZN882073118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044d53568e37ef6772f0b9d53128f684ba65764c4bb4a76976614f092b150da4. 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/QZN882073115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe9c0200e77d9caf66003d31665f0adc0b2883686cc1a2c88d6c51f539e8bf. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:30:49Z), 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/QZN882074745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b3a973c3c6ce8753f74cd3d51c53d73809c65ff17016f483f5c3fefd49fd3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZN882077231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17d3de7b3803b1e569c549ed5620d36d5ee207c046bb85b833a0b21d8a98e3f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZN882108220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8f7e81484969bb2ecb8b72e3329d7af4fa460c0b0e6df376ae352a4ca3fdfd. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZN882108222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598dcf829299ae9a55d5e5ddfb78d38b1fc409ee2c746b01e72bb51b13da4976. 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/QZN882108226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4080968368165617da35d0b8f0071653c8c1bd8975c5cd0f322d74f62a6c0cf7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZN882232389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561d6cab0aac4be7dfa17b5cdc31f229e5ee00f90130c046829b9276ddd4143. 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/QZN882073125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8382cbd6bff1e0ccb2cb8ddd12287d211dbc3dc663bc8883e0b1dafc14014. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZN882073139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd26db5d6d75dafa2eb547ba97ef1967cc7e87e95469883f0122ccdc9570a8b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZN882078365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f7b55e6bcf4b983bddbb107417565ec26ac8b33a5d8658076c20e066d325d. 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/QZN882073119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374fcd6c503141715a44abe9e30a7716d3b862d8a47562eb07aab7c295263d52. 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/QZN882073130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f2c959631c367edadde6aa0491479a89159108080adb10ff83a12c5d22f04d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZN882073127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a343af2d36bc936d49d9302d0ac29304898a3cda837a950844c0a51eac72c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882105420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fa56780c2a9582ebef698b1f791c38c226c8ec21f794832720472b860fce1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/COF012222058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7b1b6341ef8905ac16f3ed5e47a4b2d2b17afc3aec1cc0f4478b243af123d9. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USSD10204152.
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
Los Soneros de Hoy: Tributo a los Soneros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bdc78d98dd366abc90ee4ddcf5c5226e365d1f6d7bcbc2e2eb2924a0ce4998. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QMBZ91653834.