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 0x31cf73866a9a7e6064af8413009001b5cd6f3af58cc8d4d00ee3db19963e28b9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/505e8f79-8f1b-4bd1-b022-a4c3dedb3847.json and https://artists.proofprofile.net/proofs/artist/505e8f79-8f1b-4bd1-b022-a4c3dedb3847.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 0x5ebbd7c6f7b09e038835b45711e981736a2148a8504871a74f66de98055f8f7f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:51Z), 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/QZFZ62075730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9778062c3623fe9d94bde993e3c1b93863e1c57762347c697abf37223ab19c0b. 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/QZFZ62075739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41940c1a77cadc48a284344c55c1b4fca12856fb2adff2056264a5cc87e6c9d6. 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/CA5KR2087030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f78e5488e750e0c02c1967f80a04bec3a8494793eed4a4d1673a58df6ca2f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2087031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61bf3d8cd490cfb04c48468bc8292c9da24e9835b12c48f3c4323a7184b9bda. 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/CA5KR2087032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c169e12eaffb90c7529dfb3dc47f244aa0fe59703f8e0c796e344e446fe7f80. 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/CA5KR2087033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e503c0cc65cf90a30d7bb0f8d255610242b54a14b1b44c13f82dc538c3b589. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2087034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999f30fd2b0a0485a7553aa2fbb1b2a9df347311fe64b3c82f4ca569bfeac16. 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/CA5KR2142325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef428af02002536a078b5c8404d9e364738cc2ed3c1e8a7d6c299651b44a694. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:06Z), 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/CA5KR2180152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eddc856a8d466b6a9000423f786845b1facf1c28bf4d6e81ed154dd70dc653a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2180154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30898d699eb8eb1edb5f095f447a7bfea2f2988dd78f244e64eb5fa1d980c1a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CA5KR2180156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501368c818c625d178c44c90c50b527dfc57da8c3253eff13cbfb98f611083ae. 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/QZHN72383878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820164332820a2c0f4d30e53b92c7227b10c7ea986569aeaf0a1f534e9f67468. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZWFU2479739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3688610f2d803965c6d0ca3baedab3065f8581c6095b60d1008b3b78e9ea4d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZFZ72571522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a77e3f7bbc7fc5f0bb7883516b87c939f5ea5f47c4a9281d147a36047d50b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:32Z), 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/QZFZ72571523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820164332820a2c0f4d30e53b92c7227b10c7ea986569aeaf0a1f534e9f67468. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:37Z), 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/QZWFU2479739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a89628176add15a637af66d1f53d7deb2ae36c392f636845460cb2141cb1247. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZFZ72571524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc664199b4697ab0000f6fdad96322a2dae702e0e6cf30302a175f80e2e9eb26e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:41Z), 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/QZFZ72571525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3edfbbce7a8f8ef8d7a3f162f299467f325871ad46ecadf517937d8f99b292f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:46Z), 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/QZFZ72571526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd56518146689591c08895677ec716892cbc1099a713775a801253669530c6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ72571527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa7992b2c0ae9ff40fe3e8aeb4a2be9e280916e21b5b41379ebc73c7baa54c3. 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/QZHNC2531216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbaab038fc44697c6e3b262c1ebd0be0938ad30ba2fa41e2df4619955d7ff34. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFN2524898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5209c93069ec587f07cf4a5adf69178b0e41d5436009c7971cd9ceda3aaa2472. 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/CA5KR2067952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8873fb2115874f6b66c56ba194796817f057a77ab3e2e43fe587a0238d814. 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/QZMEQ2071502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7629e4b2585aea514f48900debe6d13eb99c9d70ac3d61246dabe52d5cbf95b7. 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/QZES92089844.