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 0xe8bbff57e4548beabbb09b9dd3c416350a53527cd304ba863b2ecce0f6c86571. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f20f884-ca46-48b6-9048-54d9d5e26f68.json and https://artists.proofprofile.net/proofs/artist/8f20f884-ca46-48b6-9048-54d9d5e26f68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Sides To Every Story (5 Year Anniversary Extended Edition)
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 0x814e9ef5a8e64929054c6b973d6c634ab2ba836cf472225ae153c371d1d50834. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTB42348295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3a77307eaf9fb66ff2b4910e25d387807a0c465e15b275ef03b31d4404aae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USY282323230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a77b6dbc574346737d2b62439f3bd614bb37c6d361a19ad145edaa221b2b6c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6G2402880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e9c0c04a7f470f266db2edc9343611dd8c9290280ddc390e4f4fc189586c5e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMEP2455440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e41d102ae7f6158e0e11aa0633ce6c7d5063e18559808ff5e82bcb92b6adf5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:50:37Z), 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/QZMEP2455442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae42c4151ea5b6d6fe439591c4289f7af7bd0709023d8bf0b955c141de3a87d7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES92445812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada15a8a0438c21d6179f77353a2ae513cf7d9579e92bb2c5f589eb435b9fd5f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBC2446371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c211b6464a0b3bdfd320ef6650a95489c038d0cc37ef518cbfe397fab82286f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZFZ32514943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d28fcf3a5bc7692ad426866c88a0b27d7ab47d0deefc8f57a87b02fa88eec0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:22Z), 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/QZFZ62572851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694e0251f335b79da85840347c28b09f5f62b25f2766b7606ec93ac197b4a8c6. 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/QZHN92568559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44489b3a037b9fa69fa1e4da065f5576f23e3d19768f5d0e0898003855957edd. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZHNC2587293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675cf1abb5dae00946ffde1b619ba39180a8c269e5bb9f53b418d96e59171d86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:11Z), 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/QZK6K2538964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2f180e97c3869996d67cda2f733c1176394915c6f021e2325e7a42809ddbf3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:47Z), 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/QZNWU2536408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c04133bf5bdcc90d6cd48ff86cb353be2e339401c6a5ae625a54adf6c1ed71e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZNWU2537881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88db79c450c87a90e6fefa939e08a16a13d30aeecd35f18a3296df7030964a7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAU2524677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcdfb4afcd7846304689aa133600bd113379db492b5bc13793734bd3ff3f9ff. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAZ2515402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474232e268d12ca0f9d7072b3fc1eaa0fa59c6d82e401b907c241e8b2e6103c0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:59:43Z), 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/QZTBE2549057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc63b372dc3c9dd6c1448831081e0dcd390a1fd49a1c03ecafdfcd1757cc13d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFQ2580049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988533e654b7213c8d2eb5de7cd80389e2f62071bd922359c2fd67c86602eb4a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFU2538758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d5aa5b0d7eb27084a7480e6fe0e06e4d81c62d25dff9376c962429da5882e. 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/QZZ7K2528872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de269594d847a331415c6373e4e9172aa9866ad9fe8b7decc37255d259351f5. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZZ7V2517216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1ab8f200ee1e3f2722e7c0fe42d2a949ebe383b85605fb7cec486fe6fc52d5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F42588528.