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 0x63be3b77463aa67edff8846edcbb979e2b2c600ff937b3026cc354fe62bf74fa. 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/2efced58-51d8-419a-bd65-5c2633c1172d.json and https://artists.proofprofile.net/proofs/artist/2efced58-51d8-419a-bd65-5c2633c1172d.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 0xbd78917553617e69fc1effdd578bf791e2b7861cf02611675a71be4bc5944f7c. 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/FR10S2466121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e18b0efbc784650f3f39941bb74582f2ba73fdbccb664e55ed9d0cb93d5b8eb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR10S2466124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f81bd4ca952b95f0bffe25078bb2583385b03b4da0e983ad8b19ad4bc39617. 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/FR10S2466128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c5d67388f1f8171c4912475915881e3d7d2d81b4b587af238a54ddda069e7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW2000364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469cb21b4ef605455537e0625e14bdc80c9f9b54378b7fab90f082673f022367. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb61d378b1fd89d46c01d4a48a004384d432dc7ba3871cc3b625b48714416e37. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM4TW2000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc192f07454300c77f453982abfa54387d4f562d46cc561383a617b15a9a32232. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:48Z), 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/FRX202314689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b14c8b1874037077d18b28bfc4af2e7ab7c623b95bc4aeb464d864094312e5b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX202344913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ae3bdd5ff77f7959ec1f8d51e25fee9a45327f30476aae2fcc0dc25c873fa3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:06Z), 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/DGA0Q2347704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cedd5c9f367a41195ad9a38eadffea7fe67578d221599415dc2a0eea1958932. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0Q2347706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7149123cdd9a439e153a2f141f74ae5b307f62f8fbc9a02eef2850e05e4469c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0Q2347708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf289d0ad64f7c4680206d60c8f4c3839d5a3b11db2f3a3ab5ef1a96b4b81a8f8. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DGA0S2470692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bd8f95bc8bdc4a9e6841b66aad6286482f4144afc11b651a980b2497ae03c9. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FRDU32500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcade61d5cfdb922e0efbb3054f5da678e5d5309416c872d2a9955fbd6b98e19e. 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/QZWFF2459430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a837bed3c1f5c6f8f5aa86d0f2c1a491376b8e482071104d37d3fb55c0fda3. 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/QZES82492644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44968d6e4425d60bd6fb6cdde0879b5334d8b52d1141de8d96aff24f58bc04b1. 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/DGA0Q2347703.