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 0xfda41241371ac8dc4d098a5641345090d96c8325ff23c165016a7c8b120ee5ba. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06df483b-3636-4ca7-90e9-a77b619eb03f.json and https://artists.proofprofile.net/proofs/artist/06df483b-3636-4ca7-90e9-a77b619eb03f.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 0x0d86de0cf80f12b4294ace0a32d062db4e44488484173d423c417d2e8f49b59d. 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/QZK6N2289099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cc02109232affcb9d57589c1bf0c082362d70c1f6ddc992bd6938b98ecc429. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAGE2207860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87fb9fabd8cd9b8a6a95c6e4c3949877d6a959c4cdbf68a83d1570b83faf15. 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/TCAEN1919189.
Especial Musical de Popular: Tiempos de Aguinaldo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f2bed4872d55a49154162a8487a9b73dc8f5ee39aa39d6221d105a31fb3a11. 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/USASN1901309.
No'Ombre No (ft. Dulce Coco & Chamir Bonano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b632c0ae1ea80396cdd96cfc84e3b1232231799c83363bc07758430030fa26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ662473733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db39657f6d22c9b2f1bf30707e4a6c9103dd7e678d1ba8e6667053cb0144c49. 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/USDY42038273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b3b22a802b3ffdb0c7b0e6499f4d3910e6778662ae9b454078651a3dce340f. 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/QZWDW2428741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c5f33123ccb3a155bcf40709f7f904deb664712979ff0f8509cbcf50e52ca. 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/QZWDW2428742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d86de0cf80f12b4294ace0a32d062db4e44488484173d423c417d2e8f49b59d. 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/QZK6N2289099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e76c68d7fd8b33dbfb15f789a325c58244dbe386a691b9a6cf87f8c4c5be42a. 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/QZWDW2428743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d54b79507690dc25a94624a3c9dc2e62e575b8c752ee69022b20679718189f. 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/QZWDW2428745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cc02109232affcb9d57589c1bf0c082362d70c1f6ddc992bd6938b98ecc429. 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/TCAGE2207860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47823f3aab8d568a93813eadfcbbe3cd3a502cd85bb057a08d54158990d3a44f. 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/QZWDW2428746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87fb9fabd8cd9b8a6a95c6e4c3949877d6a959c4cdbf68a83d1570b83faf15. 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/TCAEN1919189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb5f603c6afab38c6cbe1d83c526866c77edbde14f09320b1e44735692d7c7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWDW2428747.
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
Especial Musical de Popular: Ellas, Mujeres en la Música
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254fd9f66f14d143112c2dfd4fed6d2ec7757ddd05525e06c8ad521845aac144. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USASN2101660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b402d8851d68c13107496a99d53ddc7ee50c1b9d8cbe2fa452b4c2539b9fd65. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZA3V1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bf26b30fef6c3836d6d72365e82fa2d8ceee81ff532bc38b4efc73bf8cd54a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCADI1700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f18174d8474393df19edd7db99f471ec5759b0e2155087971ade7363bf6a670. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZWDW2428744.