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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd299fd19ea6ce52027e19e9d3f680324067ddf2598d29bbf0e4fe8ccd2e3b7f5. 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/3f7568d1-8bd6-4e41-aa0f-c3bbc4bea70d.json and https://artists.proofprofile.net/proofs/artist/3f7568d1-8bd6-4e41-aa0f-c3bbc4bea70d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elisabeth - Gesamtaufnahme Live - Jubiläumsfassung 2012
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9cfb819ba01c9e317b3ce17bb279fd1b17c148709f3a9c26081a0ec431eee7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd5f10bfd65713054c274e3782aa81393a697c359143dbd04cd4442411e7f0. 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/ATM891201966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe488c8a9bcf8c40f30a6467783005dffa5e1cb94c210723384a331dcfd2af4d8. 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/ATM891201968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d22183788c37c2da5199424b7ed76a9b8dca66f306ead830b3db5cfef3d4643. 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/ATM891201970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77731d860ff440c1894b53b35905192f68c5f64bc949fb0a80639e5ffabde800. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05124f29a938b9a4f503ebdb654b050ad967c586df9c71c079f53155ed44b29e. 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/ATM891201973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5588de31eb1ddaabe1e306c61ad641ec29297ec58e4ed12c5f9cb402d1f42e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c0f3dd48e249b62fb05cd2871ce68a7cba1df49141435b05f70a32eb5bb47c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214bd00bc2fe851fab169040326ca1224f432870ef7931e2869da31e94ff5791. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da976005808d7a5c663607f96b42a3f35d1dc25553f09d8dd617bafd92ed2bc. 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/ATM891201985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f42b984e341fe5628fb6dfde40e9fa1b2b6edee4a035911dd4a5b31de5f72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b79557e474e211aea166c61d4d4f508b59810e719745cd870e5e1d0b4f8a03. 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/ATM891201988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1535039993e51d87114c666727449326da3de76f32e583861ae4d5086b7c61c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b7b10a9b0c304a634ad90dd839d29cb9bde48a10a8608103b296dd7d70f25. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897d2405ac648680057e8273c76eb63fd659cca029aef0dc523cdf976fc6ab36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d6946ab43979bab3a9f96b60a92d3984e1ebbad139abfcfbae564a13a3145b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628672510f6ca4fb2f7204d5988076ca7214df2ea08c9b427b8d9cfe1c4db329. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891201997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f69de88e6a551545f4a6792c3216c6e4c7cf04aa791782d9ea1304c695b873d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe674ffed637a18c822551a327d49797f0ad72f3435a5f85e243a1cd2a78287fe. 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/ATM891202004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a4f93b3a18c543f84eb28ac92e9f3ef8dc0faf93ccdc03b096446094cbd72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATM891202007.