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 0x10bcadf2a93577cbaa61c528996a462c3c8d65afd2c73b63e639c4c7c96e59a9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ec32cb9-ed11-46cd-b155-45935bf0c75a.json and https://artists.proofprofile.net/proofs/artist/6ec32cb9-ed11-46cd-b155-45935bf0c75a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O admirabile commercium, NJE 21.07: No. 5, Ecce Maria genuit
Ex nihilo: Polyphony Beyond the Order of Things
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 0x4d7ae5d47c4125c355eb358833d6c5c8b0d0e010695a099a454242eb46551376. 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/ES7892401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35185325b69eeff7d11171ccde03fc7c3bd5ba98f6f4f41891d678c1f929c34e. 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/ES7892401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca595f5cd7dc7f892a166a2f3ba8f928d4f8d3e96d44a6739570e846fccc610d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES7892401001.
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
O admirabile commercium, NJE 21.07: No. 1, O admirabile commercium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6274d636e557ed58c9bdfa467f90d965d19b00a68a7593f51ef81ee12aea0. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ES7892401002.
O admirabile commercium, NJE 21.07: No. 2, Quando nauti est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170178a68f2263c541e894403aeb2247db48114da7cdda29387c4de3759f97ea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7892401003.
O admirabile commercium, NJE 21.07: No. 3, Ruby quem viderat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa6302caa248f50a4adb36f320d853d40542ebc8ed007c5e2177f12918b10ee. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7892401004.
O admirabile commercium, NJE 21.07: No. 4, Germinavit radix Jesse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6694d3cc92f3548b267154e3f0a03bed1606dee6e7b5275bcbbd3d62a600fcce. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES7892401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbfeb2ac19f5bdaa11a3a70f023c398c2c5101bdc24fd6be53dc51e530a45a4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES7892401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb201091da044f877b05ab5eeb1388e4d64f76c162df425a64fef5d5305a6c0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES7892401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2bcd954a05667fc171538bab5b9cc6fb889e24dcc86a63f64c28cced156b6e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES7892401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15067cdc7eb1a3e525cc9899eaebac60faafc6d79b7322d29105926e759d747. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ES7892401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07938a7cf9e57265f3e260bdcc5d61bc7a7c363d4bff43c47da982f69e447179. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES7892401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1abcd858e03f193e1f8fd6534ebb9b156d35409023c82152220476960622ee9. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USAKS1400043.