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 0xb5ceaa9c2c51fa8dd50560739fe9c3f3a4700ff50810f47ab0c4080a1135a050. 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/191be42e-5bd1-4aaf-bde8-9416637fa3de.json and https://artists.proofprofile.net/proofs/artist/191be42e-5bd1-4aaf-bde8-9416637fa3de.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 0xf781a374d63aeb25efca96cac4704d7f12bb7a1c65641c2244d4eaa76cbfa7ab. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USL4Q2059153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eff698580d6afd6790066471ec754f1b3f9b6853625a1f3926a7d1e5d51672. 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/USL4Q2059159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bc8d4d9d0ffcdc824cec1dbcf12e4ef267b158a79ef44744b3741e4c1dbd7a. 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/USCGJ2101292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb9ea08af48a9302ef635033c0f0a25611873d78b8e37e900745ab3a2708e0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USCGJ2101294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b500448c12e26806867855d09dfb0fab12ce635e04eb2430197436033e902. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USL4Q2265713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cce5e42d9eb9dd2071906943c40e80244962eb4f71dded262242fb9d7e7d4c8. 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/USL4Q2265714.
Gorra al Rais de la Mirada (Inedita) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fe2a8831035f772bf554c33f831f48cc9147748fc2645e15f65057935ac5dd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USL4Q2265715.
Que Te Parece Mi Niña (Inedita) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25594d172a5b7fc916d1806af3744ff52da92d517c9d6c46fb4248fb7873c851. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USL4Q2265716.
Los Billetes Van y Vienen (Inedita) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b68488d55b5e59d8ac1af46c8b61e37645bf316aab7c2f77e9fa439dceb88. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USL4Q2265717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad2eb87757f0307b6ad36a5e34ca62c45966b7fb9401b8df6533a0729909733. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USL4Q2265718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5367df2011e4b0df2128e94ecd2e8ff7bce98dfdd0160b04336f16225772bf2. 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/USL4Q2265719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ded60ad0d1edbeff04a744f2c81e26be03fdd1dc0a638c3f4e7437c2f235dc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USL4Q2265720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506166ee955c7a12d0fbef7661be9295478db9cb85c7e8061a7e47247704c228. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USL4Q2265721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a18aabc43fc981252f29082d54efdb1cac3a3407933caab0e0506b354475a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USHM22457122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef3af0526d54b28f733d0985ea4548ff62c3be5b2d91b3e9cb49bbce80f8fc8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDQH2501193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b877e531de2c52773084d5d0b468f6b22c951b85b0a9ca13991ccb5076911. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3DF2572418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dc8b8bda228760cb2efa29eab50fd8184e7a8264a411c6ef78ad6ebf257e2a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US3DF2572419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034eb44f2b1ac580391da4aa26e847bc8f4cbbf2fd4e5f891fa4766d260e4644. 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/US3DF2572421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f7a6a6d8a86de399f6b49a88f10b7984697f53119c1475ef386ad168477c1. 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/US3DF2572422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6651e3c684840795d04c12419488a56b8bd80c7e3e7afa0bfe68c265839ee. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF2572423.