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 0x25f2a2dce9f787811917fed59b7cb258f21552dd20017f3d7bcaf3e20a2445c2. 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/b88c2c13-92ab-44ec-8885-21c228810512.json and https://artists.proofprofile.net/proofs/artist/b88c2c13-92ab-44ec-8885-21c228810512.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brann stadion, Vol. 2 (NITRO) (Acoustic)
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 0x60e395837296a8042105f534be84545da75ef47c17ef03125b9b1613e90683e1. 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/SE5BU2451983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765fef7966cb37dc001fe670243043c55c802433c2668ccd8863cac11b4da311. 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/NOX8G2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f49435129b50a5944e19407af6456b39cd163819e707d81712819581ef853d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6QE2483938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940539dd04b4325b162ea7103b5ae488102c0b4df2ed5db4feb1d927d6e414c4. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:06Z), 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/SE6SA2440920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2144bb5ddc5068ec5114324b60b5ac2d3a5328ed4c7962269c7733b7bf2a0898. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:40Z), 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/SE6SA2440921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30d3787842c63f6e73bd294ab610e0f17d05829404ed9c2315b43e245908040. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:22Z), 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/SE6SA2454652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79a7c95df3c723057e4c71ab6fc8231d9a977ed6fdf2b9019358afbfeb4684. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6XY2516400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe280384fc48b837686cede013294fe7eacf4725b2e2a476c27c0bfd48c981a6b. 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/SE6XY2576727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6984d4236a3041c985980bebb8615167add1a4447131ec75ee3ba5c3b7d78ee. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:41:46Z), 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/SE6XX2570686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7cc59686fd205ecb75886e24e6c527410dce23e38722974720cec272c454fb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6XX2570687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da7ce29dbb824c2b3f69650e60faa437387899ab75229a372a04173406726df. 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/SE6HN2405279.