1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4dc81bc18e79a481837d087bdc2a33d253bc8ae284487c9fa756182a17cbc1b5. 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/42141aeb-93a7-4309-a45f-84a6f18243fd.json and https://artists.proofprofile.net/proofs/artist/42141aeb-93a7-4309-a45f-84a6f18243fd.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 → block OTSBitcoinBlock must exist at that height 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 0xfe98c6dd56376df5dfad2f891698f6477009a9e4cb4f6a31039286ed198b5497. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:20Z), 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/ARA491400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a45b023273b259ee464d32150ca1aa7e0210711da4b47baae486d46a90a80. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARA491600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe792d6cb2ad0a362e079ccbbfcd9bc6bee431fdcd5d1892f4292cf6f7d1a3569. 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/ARA492000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfc120ff5f76e35992e82a10ef047ec1695baa9c1d15c7248e08cc563f79a18. 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/ARA492000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba223210880437bd2a60d475d40331fa31ae1abe0ce8878ccbded2fb660f26b. 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/ARA491900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb109a2954ba9170e5345603a26c894550bfcc3fb53d061fe3c863d7cdbc18e3. 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/ARA491800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daac487ae479c2f8c2161573f8e625c1596f4a2840a26070b1e2c587262bec9. 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/ARA491900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111a079295afa16b692f495caf6af59906dec14c32de641838ba1c59035e90ef. 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/ARA491800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9025c2de6ab4a36e4b5df3ac207e1267b3fa2f2e7e0b1b40acaad9f2af9003db. 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/ARA491900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971324b76ed940216b6d92d9531eb03849af75d062abe1a7430d374e4616908f. 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/ARA492000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb37e8a5af2396d5734b1eb10c0a885b24d2b38053115709847e58806888d3d3. 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/ARA492000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c6fa980e03f5e3c1a78c317dddfee53b80e3b6839acc6718787c13bd5f7ef0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARA492200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48c709a2c7c586da118a33396aa10ece1fe33745653b4ff053d97d1365227c4. 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/ARA492100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da03c30257bc6525a1c623f9325e850244682f1c96f9228a3b36692d0e5d14a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARA492300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f340a4b7c597259742ab7d89c41c327119851f8466279299358bb15615d10. 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/ARA492400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422efa9805fa8805d779903c8acf765e006714538a3848c811dd094b24b2e77. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARA492400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6aac7d218c541728f242b7100b078c023140c7f718f1b8909879a80bf15902. 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/ARA492100023.