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 0x4a6b6870f7bd90e6c84bc4784586e03d26644deb45198c518a383929d147be38. 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/345779aa-0a96-4efc-8d88-963ee10df9c0.json and https://artists.proofprofile.net/proofs/artist/345779aa-0a96-4efc-8d88-963ee10df9c0.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 0x5d73cf8766b62b651399974bc03290db7ae8d4c4c5b09761e3879c858f64d0e7. 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/HKJ952008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61083ffab28bc9110d744465faa42db8287e08498e2bd5a2535e988f8d7f9f65. 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/HKJ952008502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720103739329803cdcdf7a4100b362e81dcf555f0c8a86b959219583fcf4adbf. 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/HKJ952008503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94112cfe819fe569ff87a3eeb430f44388b7c0aabe5354481c4d56c2e015c3de. 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/HKJ952008504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2516cd5d2e5ca41cce7cc801475c730f5f913bc871f034a35c94d69b69f0897c. 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/HKJ952008505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f6bc65dff9daf25b52b39213d13bf21258bb18a848218a5b7eac8765ebb2d5. 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/HKJ952008506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0968c0da7f40d505663e890561bcfa82d46fc5c7321105afe0def8d467c8f4. 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/HKJ952008507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8412f757e01124d96a9f965295ff6f6d58069335074cfc3fd6016b4727e5b. 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/HKJ952008508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bac6a5eef6ecfab65456614ebe174b446fb775bb22532207beac2fe7365186. 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/HKJ952008509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce58d524f5f73dd799f572cf05daa89a9088fc9145bfc81ffa5b6dc14a778e. 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/HKJ952008510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe835215bf4975188045f75d9ca44067c12b067fa659f5441ad612f43ac7cbb74. 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/HKJ952008511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b50dffd9c1bc36a8e7cdd6b6877d6badce1547b8af11b220bde5a1a2d44309. 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/HKJ952008512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67676c1123b12b5657ff7f8a7743751224a6c2cb29b30885967617b701b38b02. 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/HKJ952008513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2f2ba1438ca6a8edbf573f3a7048465f58cdc648438550711c8e1508c8dcca. 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/HKJ952008514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89ac95a1563bf9e48bee94c1bada1a3d6ffb91d3061cbb39e138b0aaac898f. 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/HKJ952008515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e30aa841d0627304940509a39a84b1653c5a9d1939be429c143fe6ec79e883. 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/HKJ952008516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23f5722f4f43802772e84b849f20e9c492d8ec58d625f9062a1e14d06b4ad7. 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/HKJ952008517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02068e16a4f3d745512a70548043e5e5bbd2a7506d431a0129d5ee66e16d872d. 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/HKJ952008518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da01f2104f09fe32d019326429f72cc64b971860307575f2f9d1be71e180cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732140818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50ff6d31cb11b1550c15a2a6df6ee659a8cee8bb0fb94407f69adeca95a2508. 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/HKG732140819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd909f8979cb948937db1e1d04740b1deb747740550f0d89fdfc37dbcaa46845d. 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/HKG732140822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6530f44b77b1e8ec3a055e79eb668cc818fd40c6b7245ee55471a22111195. 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/HKG732140824.