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 0xc7da1c309d87485e98ed2e6cd6e9aa1b8930da82080bc21dfd26252201616454. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cadfd83-a246-4b0b-96cd-cacf454cf5d0.json and https://artists.proofprofile.net/proofs/artist/9cadfd83-a246-4b0b-96cd-cacf454cf5d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bajo la Luna [feat. Galante, GueloStar, Malvo & Juno] - Remix
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 0xc9452e255c60286bde67742973a05c54a25e47ea5d7c637e2b7cad26c863d9b1. 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/QZ4JJ1642304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd01d8ccdc0f5baab445bf9b67f1405cb000b334a8b4c9daf0584f44d7ecdf36. 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/QZ4JJ1642307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033037a5e8d6a30b0e2f95a821869a29e002ce65379b6afc43b694a4f2ae81c9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZ4JJ1642305.
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 0x98f0becaf60d6673cf5399cdf4376051033226102382ff97483e86539bcbb080. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZ4JJ1642308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0a69e45164c76d8635526747143ffed6547a34e7aa1850ff2772ae6e29e444. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZ4JJ1642309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5c347424263d3715f3f83d9bcd944c8cabf292dae004f069ed8ca8c6afc3c3. 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/QZ4JJ1642312.
Como Tu Ninguna [feat. Franco el Gorila, Tony Lenta, Galante, Juno, Shaka Black & Yazunori] - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c49c778489e0692bd2cef374f08bd2d9a551fd0d16b9e785af47aada5b1409. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZ4JJ1642319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573141972c7cdd34dcb94d0bbc3cc28690443075893fdbbed7e46878ebabaafc. 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/ES09C2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877ba77c7eb17f6ca1ea638d18ef9414e5f46c24210560c1b628fb83faba234. 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/ES09C2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1bba025c3edd2eb19bbb95715fd21722014ed3bbe2ade06f623e523bed8832. 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/ES09C2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc62be6b1115b30b0911c7005cf057077562dd9a2fdbf6b2c188d9e5ea595e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ71974404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ea29b4e4e56ed5271116fcd87ff2765d46e3e70877c0baaa820d276b1c5658. 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/ES09C1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290868d610f7fcd377575c292c1e0dc7f0ad291131be3197ace24eda100fae69. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N21846071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef4c73cb12cd5755be4e20a4b63812e8cbe90bcf162a0c3a985d5b884cf6ea. 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/QZAPG1765075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970bef37936f491509a2fca82525dd2edec269646c5f1e0d97cb9ac369204752. 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/ES09C1700174.