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 0x25ffc91e1d1b17e2752d1f33313080802e9540ebe6449691eb9c8cf8a0b7db8c. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fd24cb5-4d5a-493b-a7be-f7302b34b8ad.json and https://artists.proofprofile.net/proofs/artist/0fd24cb5-4d5a-493b-a7be-f7302b34b8ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Down by the Docks (Listening to Rhythm and Blues)
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 0x818dcfe57840c9fb4635cb4c30301ff4580b67a460e83f7b0b0d12bac9894d99. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM82094843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd548171b50fbecf3331866b8f0925fa84b242e01584b04dc2c6134a13e3ced. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USCGH2153708.
Love (In the Time of Lockdown) [Atrip Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0133551f00ef7e38e2a23b7b877f1ecf31a6064b745b2d87ed334eb3263a12f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:24Z), 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/USHM92154254.
It Didn't Feel Like the End of the World
Ldt101: Silences, Experiments and Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877feebc425469cd22bc2259f9521e3bdb9cb9800c285982214ebfddacb18a1. 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/USHM82396562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0906ec5a45d2b752172fb794054a3a6ac53d519e194f565a468f9d25817b2ed. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM82397777.
Woke up this morning with those postindustrial blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c554a78fa9f088c6ebc09cfcfc31f965c70a2df11c1bdb9401cd1fbea13191a. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZTAX2404727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a801ae2db277bb7920a4b41b288685c70e243ee2eb1200ce123eb583fb904c. 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/USX9P2494503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4f4eb79259a2f162bc6baeb916c258181964ea04f6fc75d10cc16baeb4b15. 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/USY242402983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d5cf4197b556c7e2540c8e8828b9b6d2901f8e9c2b49b9281ff6867750a8cf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:44:49Z), 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/USY242402991.
It Didn´t Feel Like the End of the World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc0efcfa2966b5e25457a44f8da701b609862c5cf42d8caa305dffeaaa4307. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USY242402992.