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 0x59c77288a6bef6e200c9d6ab56d6cfbd0b680f597543c1eff0940e49df4379ed. 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/798158c7-aa89-4a3a-b304-4f37d9074e8b.json and https://artists.proofprofile.net/proofs/artist/798158c7-aa89-4a3a-b304-4f37d9074e8b.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 0x75b8862af44e8d72882f26890273555355753f27fa9f47ce9984e91df5694410. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHL2288712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ca96d6c74ef3e3f82bc0fcff95894f3a9d7c8e4738ffccb99a4f09a8f9e970. 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/QZWDE2456280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebfe208fa7c32a1f64f0d92cb25d3e39658c01154cd6fede7e237563fd4c118. 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/QZMHM2286355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cca1299a9a6c6b1407bd1f76fbe652fd0776fb07048edd7da03765adf66095f. 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/DEXW62300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9da790dd09f64db4bce42a0740e4977a75aaa419d25473bf458d531c3cd5621. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLT2H2401557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ddb4586d1de8083b0e997e7dee9b9575b1d14252f391496d101760a5f4425. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812343450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98dfe7335dfcce5bdd248e8a69c859ba6099ab86306cb5f72967cdebd04322. 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/CH7812349434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4fe3203ec029a935550702937ee0f3657a4c9d13eed33ca2262013f0781a0b. 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/CH7812412581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4fe3203ec029a935550702937ee0f3657a4c9d13eed33ca2262013f0781a0b. 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/CH7812412581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca233ea3b42b7f4e64137ff540bd307ddb30f85e2fa9a32643dc919251d5edc1. 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/CH7812412582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534064cf9fa39e3d573e99d78b628640edc2028b7115afeba8e4109701640442. 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/CH7812406297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe168cec0c4e0953163273606396fac316029a47fc645bf30722609cecf236568. 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/CH7812406298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98dfe7335dfcce5bdd248e8a69c859ba6099ab86306cb5f72967cdebd04322. 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/CH7812349434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98dfe7335dfcce5bdd248e8a69c859ba6099ab86306cb5f72967cdebd04322. 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/CH7812349434.