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 0x68b3939ee2ca604b213fb8a226387f108006a50ce0923469f5dbf6599937ae09. 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/3fa864a8-8831-4416-a9eb-761df46067e4.json and https://artists.proofprofile.net/proofs/artist/3fa864a8-8831-4416-a9eb-761df46067e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Libro de Cantos (Poema de Nezahualcóyotl)
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 0x43958acb3da9997ef859cfe76f6b69bd9820f722a2bdecd72ad3cdb222be8dda. 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/MXF601500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc226ee6b99b79dc57cb32fe6d15701292ef94d741df89f32f00f0c5ee79ca4ef. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/MXF601500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7bd2b3548205a21cb13629e792b9141a06202c973cfd19629b012dbdec053d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/MXF601500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7942a58721c75733eb0f3df0cd50a196809b25c82196dd999d01e0567e7aa. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/MXF601500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaae2093770f86eae4f3def8ee20b4511761fef93c07d40258c3c9864f904bfe. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/MXF601500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf840b0bb89ae6974c81c9260b6a1d8e68311a6061578bf688cd51e2c23945a17. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF601500351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab4350b0b43ca3f618143ed4882fd1a3a0c1c6e97868995c396647e429a6e8. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/MXF601500352.
Pajarillo Jilguero (Tradicional de Guerrero) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4482ba704d52a2359a44789d26e20be3de09d51253c3049325f5fe3cddf539. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MXF601700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eca88aa36c688bc75a38e62dfe8c71a821225a11e2f024aae700683417f1c7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USHM81857749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437f0cf87abe73ab60b10bb71fa361161193435e233f31c699171a5876b8ae5a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USHM92045746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eca88aa36c688bc75a38e62dfe8c71a821225a11e2f024aae700683417f1c7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM81857749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466943e164240f08b5a5e71ef1295cfccf80a08fb33f3d2cbbb610fd9a138d67. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:28:26Z), 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/USCGJ2232270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad91980332744d49f41e69d161226867c481094e5be7bed1850153763e4c7f4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:03Z), 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/USHM81911712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5372c89164747b0ae9abd76627dbc96a2d062fe79eba0d19fee341702118134e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:59:17Z), 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/USCGJ2232272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc2c28ea101e61e2da18e5eca3f63985e49eaf99c01e9156707b732cdb4187e. 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/QZHZ41966998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e7ad7c36598f71a4f94f3f17acac19214dc6b7208ec236f48d4d46a9ea6ed. 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/ARQ5T2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598e7ad7c36598f71a4f94f3f17acac19214dc6b7208ec236f48d4d46a9ea6ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARQ5T2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61249c7556d1c9091a2b1fa07044651fd992127d2322fdd7c35fd46862635a61. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USHM22053181.
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
Notas de Voz: Canciones Que Nos Enviamos en Nuestro Grupo de Wasap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2a4f01bef1b6db397419c9833b7e4e40cffd92c2f8c6c0ede348c9a9d42f1. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/US7VG1848333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0c2e4e90e9429482786701443ee1406e2dfd3ab1b89122b2c358af76b65ebc. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES71G2042032.