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 0x3cd4d6eae3139b80986d91b7b09ab9f6a726e132239951cf161a0f978c6caf5a. 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/4b6b43d9-edad-4c19-a983-ae919c88349b.json and https://artists.proofprofile.net/proofs/artist/4b6b43d9-edad-4c19-a983-ae919c88349b.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 0x1aecfef0e9aa8dd3e091951728a075f5d080a96abd89ac80ca8eb7104fb755c8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:38Z), 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/MXF600700249.
Nunca Son Mis Pasos / Me Gusta Su Sonrisa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d02483e903f0ca981c8843b751f8146158333500c54292af78e98e2a186bc7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/MXF600700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea09fabe5f4546979e0a70e40cc30cbd23e61eaceccc7d8d4edbd3c22bc9ea50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF600700254.
El Le Pertenece a Ella / Torció Camino al Mar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e2cd3fc72c0c6a68c05c7a2b7b50cfda738f16e29d4ff656548714ca4ca990. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/MXF600700255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae63755eea533a7edb8f1761c6af34b4a64d9cc66f717d4ec509dabe6eb8df2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/MXF600700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41e7663ef0a4a37b870d856b74448a4c5c5492e4993fe7dd928bd180c7ca130. 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/MXF601100805.
Niña deja el Corazón / Detrás de la Cortina (feat. Adrián Gil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b57d2d825a888430815ffb24fbc761e47a17d38698b552d6343115280d7c60. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXF601100806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb1620cd6c5a421060e6b17e08e098583b00700be69ada096b7d89c0565deaf. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/MXF601100807.
De Arena en la Mañana (feat. Rodrigo Rojas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea534b1f8b43ae4060356b1fe88444fcc6ca93207c8b060a46fbd1f2a6b9fd. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:43Z), 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/MXF601100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17c817a290647a0990168dd2244b81982e10e164678c041fd75730678f0317. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/MXF601100814.
Primeras Consecuencias de Judith (En Vivo)
Y Vuelve la Luna Llena / Permíteme Amarte Sin Palabras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5828a78e7b77400be204622c5fe0091921108c0718c2c7af923d8187a74a2007. 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/MXF601900608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25d2d4bdad17674210c3bb86986dfc8195c153ff57c8e693f64a693d6c5f072. 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/MXF601900609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ceb17ee4d5fb26375af42c285fa28c55c4aa8b68cd0ec2733b0e0869efc5c. 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/MXF601900610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13de0db8390e31514f1f5e4c4db1207fd6399acf755218b519778dae87ae96d9. 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/MXF601900611.
Nacido Aquí / Yo Soy de los Que No Van a Ninguna Parte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b4f07f73fa75d832b4a27d85bf80a4ca24e86b4a9c2a74f071af4b0c4787ad. 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/MXF601900612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048685f04ab5dd67b7e733b9d4331deb14b4e94757ea77b5380993eee8df89dd. 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/MXF601900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2ca24ea054b842057a932ebf116279171a81ac60d3f3c9ec1c5041515ebb61. 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/MXF602000405.
Despertar / Si He de Permanecer Despierto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a90f90a9d1baf0040e611b1fb447b1f9f2fa5ead4fb7aa894951c6648d9480. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/MXF601900615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5166a3b1305ec905e9734265ac5a8791370b55c1035e81b553f8ceaea67c4c3f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:32:05Z), 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/MXF601900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c4e2f1188757182ff1da663e33d612755f8201055eb6c68a9ea5b0af66412. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/MXF601900622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80231d8ee2a3742551d789cf7451a3ed7249ae7abfda389d25557cbfa6800cf. 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/MXF602100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce387eb18a6493a5b3d5db9b416ce7a256bcb7ce35fe3cd26a0385d782857b8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:14:20Z), 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/QZWDD2566895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e92564272f40a1e9c587265317e89e78a3264f1efe1a0d8a8397d3ff26816e. 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/QZWDD2593862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce3c6096f20f3e4bae16efafa51bdb53f8424b74caa1bed38a48c1d721acbf. 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/QZWDD2598148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65ee5040627a9318f15c4b23f64d65a237e605303620061438f00e0be13c9a. 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/QZWV32527736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040cff255be32210c515064ccaa89d5eb5079a2c932ababf929e6ee3fcf7d3a3. 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/QZWV32527756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d901b5644a74b0e60026e5190c4d6a85050a2521db58f2188232ffc273374a. 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/TCACN1667252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29defc58be5063da03a213991fc44e064e9941eef084e45eae429e81b5a9a00. 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/TCACN1667278.