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 0x7c4ae803772c64d64ab53e6a1cc9bb79a71d18ef61b8e58951fd61d39e432e3a. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77c688e0-4fa0-42ec-aba5-39c88c02f740.json and https://artists.proofprofile.net/proofs/artist/77c688e0-4fa0-42ec-aba5-39c88c02f740.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 0x5195eef346b06e47ee0921c2d712bb6b42a08f4d10f4ae1992affc7107c73cb2. 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/ZA56E2419685.
Sometimes (feat. Beetee 4071, Khanya De Vocalist & Mr Nation Thingz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ee42291297d9b1a85a3880ed5d96121e71e589cf7e9c2ebd37361891cf536. 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/ZA56E2419686.
Daily Bread (feat. Amahle & Augusto Mawts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a95da295b1f2907b3cf2864d37a1308c153da4ee87409d03d1a44a41f3a5ed. 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/ZA56E2419687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d795c3156eae17871e7cef4d97f064fffe6dbc6c43cfcff117d04751abd4e9e. 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/ZA56E2419688.
Why Ung'bhekile (feat. Mac Shawty & Augusto Mawts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff803cbd1c9cea842dfecaaa2e45abf0ec54113bb331ff9a47835bba62ad04d0. 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/ZA56E2419689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a461d0c666385073426e330f69a748e36922a9eb9c48a942b763eafe368bed. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ZA56E2419683.
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 0xce4c4d06dadff79ec677a63fbd7a8a814fef90f0568251782bb71ed7340102fa. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZA56E2419684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844a50d8ae1cca893968a164cdfd4c7aee20e4510aadbfb80c4fd64b52c3cea. 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/ZA56E2415762.
Izibiliboco (feat. Goitse Levati, C Keys & Mshengu Flute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb881bd44dbfbbe62dd72c68f8273fe4fa4c026d9bebb981ead2b231d89474e7e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E2532975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf8a3746565d0eed6feb60f7fa2e089e779bd9aa6dac8cf8d8e0eb3ab1b8b79. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAC012201251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807c8a11144858fa1e8069bbd1cf8e25d3f4f3c49433eee11dca20c06dd8ac9. 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/ZAC012201252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3cf73bb0f5df9b3854db1ebde8a738d794d9c43353395052f8cdbd6e34d9fc. 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/ZAC012201255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4f2c9165ae89fe0e36104e75e7642385a413c7e8a9618e1b0dddcee3c147c8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZAC012201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28216d3f2bfb4d6ca1c1e54cfea7d6f0c81ba797ac9c13c5bcfa5487006a9309. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ZAC012201256.