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 0xe4b3af115a6a609f936fb8195551bcb8b4e86fb6cf11ed03674d11b8379110ab. 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/1b7aede1-4ae8-42d8-b4d2-d8ab187a91a8.json and https://artists.proofprofile.net/proofs/artist/1b7aede1-4ae8-42d8-b4d2-d8ab187a91a8.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 0x45c769fd334f8289e328041dfca4efd1a5dc7f4811ae56341e459839ec140daf. 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/RSA181341226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9f2cf008e679ea6f1ca1a69b553eddf0ac1159ba0a157f836d553780d236dc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RSA181344327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a5e062084184d50013cd12f4cc09ab3c48f5eb1b5db6c3542210502aa7492. 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/RSA181344328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5a04a09aa9ecce1852612be09890b948b9517d3e5aa777281b6dae147c56b. 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/RSA181344332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566063a54710259deec2941a42beff05d56373771c18a0997393648e07a63114. 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/RSA181344961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49b93c0c1a3568a275a6e8901eeeb34d960e53a5deaa13156f097344bf1f31e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:23Z), 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/BAA052445452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f53687dc6ed6b7995c7b5ac407a16ccaf5933f7b1af6ffec5c37b117acf9fe4. 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/ATAJ12301872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe831752ffd04083e53381ff8538f826d79629bf3666b66a7086dda0d62e5b19. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ATAJ12302443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d81d0366bc7d6061bf24eddcbbcc76d7e58c92a944dac973f700e5127d93f04. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/ATAJ12302445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2328b89f660e10f756f89b5468ef8de189015dadb6298ab837e087442b62c578. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEKB72446155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb3b8872d07a29a99e35b6221a33cba19dfab76f7d679e32ab1431e601b0aa5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ATAJ12302825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a30b9bb8faa1184bd403d6043398149a064b69ffa76592b7fd87f7936f437af. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ATAJ12302826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bcd47aa93e2ef3474622c1fd5ecdda3bc510d6aca8b80496b90c88c85f30d8. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/ATAJ12302827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18c28e514e5c81d2ba180417366373184e6a820334f5199918598ea5ef824e9. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:38Z), 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/ATAJ12302828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee19db3ec3e1cb246c2b51fe7bea4618e0aa923afbaf4143538234116196ca89. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ATAJ12302829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939a7e15caef63a4c3bc8fd0953f6649b0a97ed6aaed8b41848dec13393c0dd9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEKB72529149.