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 0xa3217496fa6cbfaa5de292e278b9f91a181003d739382b4c09c9e9487ab0def2. 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/b24e755b-c625-4208-823a-9555809c7a4c.json and https://artists.proofprofile.net/proofs/artist/b24e755b-c625-4208-823a-9555809c7a4c.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 0x7bdccf0ae45b7077cac32413bd547fbaa8c3156d2e8e795b665a9af290ffa3b9. 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/DGA0R2307274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a350efff22cdd1421d358697d8e755fe8c63e8b91f9365555c12c46990d811. 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/FRX282314000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfb66278d0dede38914d2fd87a162838c843dc4986d5020f9deda16143c7b8f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:55:50Z), 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/FRX282324131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847faea99123bf88f7c56a6edf051eab782cb517ca183672a9deb7a9a768ff92. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR10S2402307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a3e8d986517d3d364b1f9915662e48a18f110066d110274ca9cd6b725626b. 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/FR2X42529150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc4eb8b419bd0091249251e2281fcf6fa11a9814fef5455232c81c68833f867. 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/FR59R2514014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71865c6af97ced795fb78d2974f716f1d879bd51da7ade809dfc99dd0c5daa7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FR59R2507481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621302824ae00b3b23059b2445d73593f67e76f636d7d8b6fba20054a3a83b35. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA0R2313471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3383971bce681e87ad590c7c82dc396bd00a4f3b9afe99ffdc607f2287095d85. 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/DGA0R2342665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d47c6d1e59a0b51f20ff031fac1beb86cad4af71e670b26fa569e08e2a0f1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:15:33Z), 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/DGA052262936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391da8ae6977da038aec377c84e22fe1926d8ffc639db75a1f2729659fce6dd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA082397795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2cbc5ad31b2080f076cc77c5cf14025a41441611a7e71100475b92765ba2fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:12Z), 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/DGA092323765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d05a34c5c63b9ef8b2a6a227590ff8ff0402c12e3e0987c5bfd3773aa02c4e. 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/DGA0H2358007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a5a58c57e8ee73122b8d00dcc8d580e1debeabb8fa73762b2b7277f9d2162d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA0L2354444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bc7247f31282d317cd7b2fc73b6248ff966d496730230b8aadd2996f46fe2b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:19Z), 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/DGA0L2354455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb924c13677072768309b579a8f63e947b597db3f5980626a7446bfff0d0ab. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DGA0R2313279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859e983b234db2058bb477f405e97ff8d6ceaab0b69d327dc6735b1993e08244. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/INR1P2407084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a59723aeb59260b04606822b0da3175b0596659aa522e805567f4f2e37687bd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:17Z), 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/INP632400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aec57ceb432dd755512ebff3b4fbd3d55a4b565c5e9dc8be4cd68132b2fddb2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/INP632400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e9bcb1868e5927b5b3da66653a08580423b71d0b861e4c8576e1f6beafed9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:52:09Z), 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/FRX282423481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf835d6a66addf7fa3acea3ccc7309fca01f4b4e8c369084dd7a5e56179bb2. 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/INP632400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870c3f1d099cea15a846aea9efea435f00719f5e17e7007062fc40cbe1d5ddb5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INP632400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb70a876c776e7dfeb5acb120f05ccd7835e7387125a188d7b082b0121c15a5. 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/FRX452499202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a89a97422bdc49f0723e0b62c5c23ea9b4d9737b574db21c38837857c2c21dc. 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/DGA082456617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed70eeb09023b1de91f7d81c0b27647c921dd30fb9d2e6b5452358c1d2081f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0L2473794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0238965129827a2d0cf7b46e90ba0d52e31ae8c40354a249b10f64b272c2462d. 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/DGA0S2474171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03f755aa65a6adbd7a89d405109ed42f535351fde6968db376fa55e57b222a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR59R2519490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df0f47d1c01cc13e5f056a2317fe1816e389c26f6a61ff858dae05041021a3e. 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/FRX762510396.