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 0x45abc38ff04a8a83ac058423f9a164988dc2103321ad074f56d202ce13d6d0c6. 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/5181a37c-4b41-401d-b8a9-1c622f412591.json and https://artists.proofprofile.net/proofs/artist/5181a37c-4b41-401d-b8a9-1c622f412591.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 0x4bf8a9ec21ff9815a6ec0e0ca17fae12f6b3ca8e68eb5dd91ff62dbb07ccc97b. 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/ARG991003929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc46c6c1d44507abbca49c3ef014340aa7b63090fd8b1abc25d752ea40938b0c. 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/ARG991003930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8835874b4c3ef7329ac13fa7a924db4665026560a8f3721007be0031651e35. 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/ARG991003931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef5bc45582aa53b81bf65cb6349ce3ab8cc405eae746898bfd57a3beba8edf4. 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/ARG991003933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad91413afb77c87809a20969bf42c5d59328037b5c363ea7e64ff581e32b4a0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ARG991018845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940252ed6013459dd1ceef039de90da5040a67bef82b598860228381c7bb6b1. 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/ARG991018853.
Session En Vivo: Siguiendo la Luna / Ni Un Segundo Dude / Tu Carcel / Vete de Mi Lado
La Movida Tropical: Los 100 Mejores Temas Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4ecd05681ac70f1986bcbe2245b7c1379664bc72238bd972bd97ddd3d9ea9d. 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/ARG990901320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe17564bb627ed7352c17bb43fe4c94cea55960719af8efc3f103f7c8d1e754. 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/ARG991021814.
Cumbia Argentina – Pasión Tropical Vol 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48daaa476b3abec572570e1168fffff222cbec8d397e927c9984fdabb38a6c81. 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/ARG991009048.
20 años de cumbia - Los mejores exitos de 1990 - 2010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01719929fddeedab9be244b697015c01f25853a95e4bf6e9c1b89934986ce84. 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/ARG991005670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bbbf2453a328c4019127987c19c9d6e723481eb07fd5ed12fc62f4dbf4b3be. 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/ARG991010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae8f928ce2d3965012a7986d19d2ae34c1aa2ea7d5024b47f1984ef719001dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARG991017977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cb0d8eb476e09db4a9ba8e18c07183edd79b312bde04002ceac661cb16a3b7. 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/ARG991021836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63abf68a722085075bee3eb3521977c0c66b8bcc1c86975ae04e6775a0613a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ARG991000581.
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 0x2bb402e70e7a95b31f0eef3e196024302525369060c4f0e537921e8bf3727210. 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/ARG991013716.