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 0x2b1999bcafe6bcace877c028e6725637e45132a063d3a9f006b616b3a3283ef7. 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/0f759e0e-41ae-466d-b698-32437053af2e.json and https://artists.proofprofile.net/proofs/artist/0f759e0e-41ae-466d-b698-32437053af2e.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 0x24c1eeca32939f043f75adc32011e293c65947372de5e99242fba1552a62892c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDMT2200121.
Why Do We Sing? (The Official Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d826af694e789712f0c48d45bb6bcf47e63ee763762917a8a1af0a249564b2. 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/USUM72403108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f8aaf31f47cf377d669953311923f28655146401f55141e60e37a1bbcfcdbe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUM72403100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2aad7c4f2f3335d47c570674326e7bcefcb5a18c5f89e1b5fb51f5e50be52f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUM72403102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d885f31654163b1a9a83b0e70759a4f771749066e34d1e7536cf7ac2b7682fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72403103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376dad497d662415e474e3e378346ceac68cc95d889bdf8a8944e171651287b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72403098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf36d7fe5341516d1d5ceacab189d2e10891c4484d8e9eed838d98919f7c3a4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDMT2300032.
Running Up That Hill (A Deal With God) [Duet Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1274ab6ffc3e558c486b5d4ec1382bc708d89e50b799edf0993905340fd0064. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBDMT2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b3ae845ce32f77cb94d00a8e869696a3c7f20e8e232e725c4bce3db69b82e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBDMT2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51044294ad331c9fe4f53fc9e8f195db889df3bd55c4d92b5a716d8beb16e49. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBDMT2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a4c992821bd07b455324188cef591577553cb42af156335c3eeff198bd53fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBDMT2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a4c992821bd07b455324188cef591577553cb42af156335c3eeff198bd53fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBDMT2200045.
(They Long To Be) Close To You [Piano Acoustic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51044294ad331c9fe4f53fc9e8f195db889df3bd55c4d92b5a716d8beb16e49. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBDMT2200043.
The First Time Ever I Saw Your Face (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1274ab6ffc3e558c486b5d4ec1382bc708d89e50b799edf0993905340fd0064. 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/GBDMT2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e524891c8134b7cfd64b4dbdaa44a236de4d2f257c980c35b40de36c83e0a08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBDMT2100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016a8e1b603aaaaed79d765a505c0aee49d14d64b7bc17b170cdd903890500d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBDMT2100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed908c2e2bddf4b81bec2011087e46fcc9c0a4cb7b90fa53c8d04d4d4c22c75f. 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/QM24S2103612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4470cbdcbb20179d893d4e0e2a94e6a283f28bb53a8bc87f200b570c8c3dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBDMT2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8837d1f8371e5e0c49c9ec5fca8dea0c172823830a7f01336d21af7796adfaca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBDMT2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc651e0ea8c8093bbd3c2470ef4af75f6e0a14d2b8a858f3bf822c4122bfc56. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBDMT2000389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2795d7e28f95648cfcf123bac8ea9743683d00cf145e46daac81d5d168545ac. 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/GBDMT2000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07bf4eb63d3ef65749223d54e04bd11904dfee76de4550bb0f1d43a6b762e01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAEL1922823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b3c1c76f5eaf8159629fd422f71bcc32ab86d19d2e8e00bfae892c5201f827. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBDMT1900245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cd0c82db6b978591e6eb156a86d8fabbaf2416c98ee2b19d93a7682466c637. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ41954893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f669c572070d9f2012fccc00148a72528127e2396ab25d40d36713da4f2205. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEE1992867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9f8e6edb33f1a51c3bb6e0d35147ab30f133fc5afdc5fc4d2dbbac70d0eb68. 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/GBDMT1600278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d32ec1718e5c5131a4a75a49300009a5ae7f5b36e808847074e1afad88e7411. 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/GBDMT1600223.