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 0x08cb0333863aea8f660b98e652074fdb4455f90f2bb1a305aa4c0c87a5fb92d2. 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/aa652ccf-fc26-4d6f-94ca-0738b9712a35.json and https://artists.proofprofile.net/proofs/artist/aa652ccf-fc26-4d6f-94ca-0738b9712a35.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 0x87e774a7bef662dfc80e67f79caac1c7e03c2ac9b99a887b55585a0e8e870aba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADO1865660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7b6a3872e88e036f3d18bfc3c0f58ea87597e99705ab3bf23846eaaa34f823. 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/FR9W11905627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897ef00acf10f8b5cdbc8ceea4e2aaece652a4a88396c6e87a4f47bdc5dafaa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR9W11919346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc94966cac7b4060c96b1f19d7761ef1c539f53370b30a0ed6801ef11392fc. 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/FR10S2170309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70204280f96341bee3c186f49b3fa573631fcfbb604280fcbc8f549fde6b6e50. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZES82050665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc045b627f3143de7efa1d3a8b8d13788cbac0b574a668e751e141c76c4f5576b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA072114873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd68b604c36fdf356723d4aa6588eab5f2ace9e5875b3ccab6fca0637b92dbb6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX872158822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a4964942070820160db080a38b6141245c2465444129a05fe21171d0c3922b. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FRX872158824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6eb7bbf86fb12ec86600bd56b0c6b455e780edb4a8fb4e35a58c7138a557a6. 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/FR59R2318020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e5fbaec3fd890cdd94b971daad024a3d3bbaee007003975526dad026085063. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:00:57Z), 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/DGA0M2353978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820ecead811cd1a05925c69ff3510c1e09c4b4da97eace66b012ed28d51e6f5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR2X42403694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794d7e52a310fc5aa8635e606fe72063507e324622d569256fd6ee1cede07ad6. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZHN92433086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d00c2ed3273d1bae4304d06919f4f6795140a5d0a3b3cdb54ca0f60c2ed68b8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNWY2479690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820ecead811cd1a05925c69ff3510c1e09c4b4da97eace66b012ed28d51e6f5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:37:59Z), 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/FR2X42403694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054c92410d67d24b64b3951fa21fe4905e446f0727f39d0fb795b70878d67db0. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/DGA092322378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9154a1bad1992544aac890a0c5e9cd747ec3430173edc14d304d79d8032cfb0f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:31:38Z), 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/FR10S2555256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa326eae637735bf081ce015e7139615a66e914ae739d334188022d3aa166925d. 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/FRX452388871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820ecead811cd1a05925c69ff3510c1e09c4b4da97eace66b012ed28d51e6f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X42403694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e5fbaec3fd890cdd94b971daad024a3d3bbaee007003975526dad026085063. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DGA0M2353978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b55c19461efcab4579db7507ec946d926b61691b355af55b685703e8b2ab85c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR96X2417180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7070cdb9a4bafd6df360be4abd66da69d94846f4e3af856b3871481bc1a49a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S2555253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc1ec4b95cdeeb05adb898511a4fe61e17dd75067f09c8314915bf076e55ef. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR10S2555254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9b36fb293dfbe45ce750add6d66556724ed4f8b52a949244a9104768583222. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX762467978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce35d0bf13cc82538be737f59e838719da3af370ba6e41fadc9756210448635f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FR10S2555255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ec64c7866e4992f499eb4d290136de50eeb76eb87f5928af17aed3a7332f1c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR10S2555257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa326eae637735bf081ce015e7139615a66e914ae739d334188022d3aa166925d. 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/FRX452388871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1995f7e900c614c8e3bc9e617f3c8d70bc3e688737ea0df49cbb91cde5aaee. 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/FR10S2555258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ed424d42e833c5168f05074575c72e8819fdab72faefde70348c5806aee4f7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZK6M2577670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce29ceacef9610c060c73cf1288d3ccd40b9de308433d1b725bda2023fd37f1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA052567822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb67e69797b8c7350b413e52a8c7faaa30ca7faa68032557c02902d9dfd35ff. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:31Z), 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/DGA072505140.