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 0x9c70bab714050fc5db4a6a65c763bc06b233a8128870434eadca3b88e5dd1a46. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddeee2db-e049-453a-8c1b-5a6eb2679225.json and https://artists.proofprofile.net/proofs/artist/ddeee2db-e049-453a-8c1b-5a6eb2679225.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 0xc1b6340a37f39b7f14f7491d4b65c5a3fafd9d97dc929ac030c64b84f3dbf641. 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/QZDFP1967041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878e6c4248e3c3a5ac8d98089cff109950650ab88486b437a46301d967e38caf. 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/QZTAZ2483260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0407d38c70374505f6f4cb70c42ba9d2af26d96a387b99e4a3bbb4294273e5b. 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/QZTB62491510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea25bd87858b9c74e39d8d411e0ec6f1b8edff7046d1ea9a4cc5cb7f2d5e6d1. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QZTB62491548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0248e6ea826f2562fabc7a643e75359f05ae9a219682ebd673e23fc491287c43. 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/QZTBA2481099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20181098b4c21df56116fe5cd41eb4f229f431c55a0d06cbe11e615c837c4659. 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/QZWFU2483319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab43175c306d622b634ebf79e9f35082a978a83d9eb94ce4f0ba9827c4cc36f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFV2421628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a9ae3fe8136b676db31d405ac5335c2291dc44dd00ecfd0c992f0c6f3324fd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFX2463858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345030951dc15f05c26c50e3c5dd8ac806728709d54bd7cf3949f4289e90b266. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZZ762424938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1a33e7195587274de9f6de29bc99d94591d7ff5df7dcdde31cf573222f1319. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ762422847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca8715f0a57f8e34ffba21401e702d82af6f43df84edc36336e01c9bbce7500. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZZ772481861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e26205bcb3898e71d4e99a541b6148dc3e3f16516d9a315398fe35812d16e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6F2505264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2a567ef95f60c62dad4485a3c4c10b11a3741cfd4ea70a9adfbe2c19070335. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWX2595446.
Mix GRAN RANCHERAZO 2 (PT4) Djs Rancheros Chile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dbe504f52202c65463af835cd6c22776fafb58279633091ea6a7e7944e5a2e. 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/QZZ7W2521781.