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 0xc1842244598556d724d055ad540764d800746d934c4e3394401e936d73a51654. 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/adee1594-f805-436d-9457-c4af3f7ad06c.json and https://artists.proofprofile.net/proofs/artist/adee1594-f805-436d-9457-c4af3f7ad06c.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 0x6b8185286aeb06edb0b0c5034acd031eb68c8b083eef1f479c99fe425084207d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADT1821898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543c905c7d11d7e75e807f3b40a15b72a2b8cb992bfcc0703ef8e9b2984d354b. 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/TCADT1821900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ca87b8dd4ee36a02b54431d9d9dc62df55793bc35fd3570c69694ae3460f52. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCADT1821904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d441b73d26007bf2b0a952353aaa4a457a0f0fccd54607782dc6d4f5ce9dba. 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/TCAEN1994829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d211cdcbea40e1594f54a466bfeeac83e5bb9cd16263463b1015749794349c. 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/TCAEU2064817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ad2673dd8ad27cd304c4a76137c89a942809cd2ff0350e457a99fdb39a09a7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAEY2006196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdd549b4771ae451f0618d8598dff285b3038889ee6bec9cb04e0c292d88ae3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAFT2160813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c5c7f0f9ef07ebfcec178dfe1d08603301af2a0ff405126d59fb96a563a134. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR59R2221527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bb186e5ad81dad2cd8a9b63c7ac19a48c54fedde13ad15f2a6556dea574d90. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X2284865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9303e6bc6035807b53ddfedd393647fd2c5e21e9153863c04544491e3b30e36. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX872347578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e0fa23c8c1964f353b3d32a4788d300b5e5aea79cdaaf0b42e572278a62f3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA052397911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c166d3fda5490f4d6eaf81043515e25c17b0482a672d48fde5686e2b9b43c7. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:28Z), 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/DGA0P2327532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf858cd37b36ca2d3d7fc823293ea3ee079e1e12892807ad802eb2439792a971f. 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/FR10S2483504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210e65d0afba97c1d5896e3db74ddf5ca83be3f6c954b6859d1ec08bf82d8dba. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAHY2417119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d245a3ffc6d04c7125bed83e4d86402bf0d76980c192aeb88d7e06baf8f8a0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:45Z), 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/FRX452474236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977eb0d4aacab3abd0daff588c7c17efa9b3e22119176ff2b4d2a4a5899d0231. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:37Z), 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/FRX762464298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8a5c08499e0fced0378651d83de3a1cd7481b26797d57b829ab9231e0307be. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:44Z), 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/DGA052496141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3b50382bfbb50d9d6dc1d639dc11948473ce9a371fd6c17c2109ed8402423a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:22Z), 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/DGA0H2423241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37c3a5b08602bf836ec732b8d168bb6f477a665d3944dd07dfdf1d30858ec57. 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/DGA0P2467897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b46ca6e325db7a2a3942eb7eef511b78f4eb97cc6bc608b00c343e9698dfb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAHZ2476145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cee8c442e7a9cd2dffaece8adbc93ae64f92cb489de10173c3a476c24f5f5d5. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FR10S2547839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9dad5e30ecbd18268cc72d65463f358a515c9a93879412c58da6460f8549d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X42554145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8397fe652c62ceb5b23c29e75133be39fb318d98ec8976e1be139088a202b2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX282503527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d641f43502ad44492892a02380fae2b216a7877966e8f6779f95648e415c2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ROBRA2503423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94acd46f92aaf689aa76f627339234f87bc3d3648fd6a74e22941203ccf85a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX872559864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6426c189cacf0bc635151e3fc5185a9057c701b627082526667f50212460256d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:14Z), 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/FRX872559866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c0001bd710671fd20dee0f2640e8353a4761d7cec5cee5179cd6ce9b9a828. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT6622578889.