Gustavo Borner en Igloo Music Studios, Burbank California.
{"copyright_id":"0x3f58287a06ebb3b7fd7d374affc3d9d487d9d080ff75add20dd7887e9fd73ef2","name":"Gustavo Borner en Igloo Music Studios, Burbank California.","registered_at":"2026-06-12T06:54:54Z","symbol":"NIM0220545","token_address":"0x2f4e3db5682ee7d9ceb5ddd03eec05abe32e3367","type":"artist","uuid":"aab03882-46bd-4a55-8a4e-7264dad8d9fd"}
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 0x3f58287a06ebb3b7fd7d374affc3d9d487d9d080ff75add20dd7887e9fd73ef2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab03882-46bd-4a55-8a4e-7264dad8d9fd.json and https://artists.proofprofile.net/proofs/artist/aab03882-46bd-4a55-8a4e-7264dad8d9fd.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 0x00281f94524110dbe7371599512f8785a284e746f04a8a40fd123d0eb61f2e24. 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/MXF011500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b29157d0a25ed91925c81202a67630d26b968f6a29d297f89309ae9fc28088d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXF011500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78991750221aa404df059232a20acac6bf2334d9755140689dee851f447f4a. 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/MXF011500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cfdf59bbb7c1c484ce1b4a35df4cd0529504292dad07945985a7f1cce69447. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF011500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363a9a480822084c67010ca89da35507dc58b35156567a6dda3e6a44c381b3d8. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/MXF011500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d67876893eb663fff7e2089349d008a165518c5144ddc063d1872ede5b618d. 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/MXF011500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e186523be9858cf428fbe1bafaedff23a5a78377829c0a024aca14e761b8c05. 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/MXF011500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ac664af423893c0ca9c07e036ab1e4256f7a1776157d3500b5ba5d4c09be1. 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/MXF011500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb7a21dd51675230fe3a3f4437e6a4659707503ea9eebe2158757b27855f4e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:14:41Z), 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/MXF011500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffee9792f05ee194b17e3b9aa22686ffaa34cbf62b79d710f7289e9f7acb74. 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/MXF011500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2fa9761660914b3be5f9e742f6f1b280c7a3224c2aee39576892caa55da7d8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MXF011500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3a518ef863bfc0b5130f40f48b15eab170acaf6117833f0d9b148f0510aea. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/MXF011500274.
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