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 0x5f20390f65f714bca7e73498dd1a902797396052c5c3df954e4f2ca2e9e09382. 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/401dcc09-c287-4289-91f3-b1f7e50e7a4a.json and https://artists.proofprofile.net/proofs/artist/401dcc09-c287-4289-91f3-b1f7e50e7a4a.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 0xb9fc2c61e5fb3ebaf9a5bae95e2eab055b7675153d01c22cc6c5cae74c1efb9b. 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/CH5170500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcf7217671d4819383a2e59aca0e73d313c7b7b1eb722ae46fc62f2fd242b39. 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/CH5170500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a1eb67778b700562ed163d73d2a4fc9b8defb4c7eac223d2a8403d83192a6. 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/CH5170500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a0a656b04c86691511706a4c74ea8393c5d1492e132732cf34e33434fea44. 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/CH5170500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878240bf289af0cd0beb363c329154f54d9f9d0960b47a394ff974bb97accf96. 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/CH5170500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177da45fcc10793e280492336de4b4d337656f8395a59970ea372dfa2f65767. 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/CH5170500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b24f468946cfcf406dd4a321e1f7d40f43c98c0b76c5aa9559b49135c0011. 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/CH7811815577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a17aa6ed1440bd63d39fc441e8a62bf4bf66b675dd0054c722b99bbf441024. 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/CH7811815578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1b011108fae7ac7d90e6ddcb23969e53d75515fdf43caa29fd5f83e5873f4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH7811815579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495469404128edcdf933b63c1e83d4f3a65eb60024d1d2dbca54ec3dda434f1. 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/CH7811815582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3090b9f667017c8c02d4bb191d5e0371a36e14bbaf6d04667022c4da1135a5. 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/CH7811815584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675236c7fadc6604e7fa07524d38d4e1ddd3c01dff8bcf74abc37ad473043a12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811815585.
Dune ade Langstrass (feat. Tinguely dä Chnächt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978d71a543101dee08b23afc90272c6e8556366792bb0632d3dd1c81fa1e4a82. 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/CH7811815586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0afac8278c17c6c51456277b723dbbeca1f4eec254c3b9669c70dbfa21dc72. 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/CH7811815591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253d7512b2a5cc1e4cfebf43303240ee537b853f2a702d57b986641e603294c. 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/CHC381700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf213e8f5fa92e653abd7eb575d82127728b820a6d3d138b7f3490785692163. 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/CHC381700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c243b0460eb4cf622f2d7f5730a01b594425ae9e4c0b15bd2b8597b237b7149. 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/CHC381700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc757b97729eebe5678909c63c6d7245a0c469acf698c54413474521abc4648c8. 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/CH7812222098.