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 0x9e0a0e9a533baf7b120a7628f52fbaa90e3f327cc4398f65d8d2dff0cfefd9fb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd9282ed-4282-45b9-ab8b-0c0b169186ab.json and https://artists.proofprofile.net/proofs/artist/bd9282ed-4282-45b9-ab8b-0c0b169186ab.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 0x24bfa2e32fd6bb16c143fb4647871e2fd7f5425afb0681f9c9dc169d526c2b94. 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/NOBFJ2002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e97d8b20b6a79894e1d76f2ca8619fa1881a9e34988f03525048fb62588e7. 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/NOBFJ2002090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ac6a9f30d99f4b4b92fbff9e12706979b90071f235318c2b25ce0b9f7353a. 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/NOCTH1866070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00da8c7d84960b8be4a48c76be05f4174b106e10d853666162eb10a9269c68b. 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/NOMPP1605020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4565877cefe33409d5e70537d1c232dab813f46107c83dfd6e69191a203f497c. 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/NOMPP1605030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfb2d120a51fe0c8a1671c871a6dbbc838c1dee8b33f345118bebfcdb34f6d5. 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/NOMPP1605150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d3eae02085982e81736b2b409c948730e0fedd8816e911bfc71866e3d8ea19. 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/USCWA0101705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5def769637479555959342a674979e5c69b6e15f58e903c163a43d78cda926. 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/DEB332176703.
Meditations over St. Mary Magdalene's Feast in Nidaros: II. Psalm 62 (Vul. 63), antiphon "Mihi osculum non desisti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe95f0c5b440c73e7a5cb173181534da8716ebd3fd3638a35bc0fa0cfa72bb64. 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/DEB332176707.
Meditations over St. Mary Magdalene's Feast in Nidaros: VI. Hymn "Æterne Deus omnium"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3f639ba58f6b568e18cc8d47c569187ce01e8522d51481b493387ccdd740a. 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/DEB332176711.
Ødegaard: Meditations over St. Mary Magdalene's Feast in Nidaros: I. Maria dilexit multum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5def769637479555959342a674979e5c69b6e15f58e903c163a43d78cda926. 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/DEB332176703.
Cantus Vib: II. Magnificat with Antiphone Montes Gelboe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf141650a5db0420928b9416a8373d195dc84f65b645e2a6705c3de93eb1d2b64. 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/NOLFA1687220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2990c29820379c10b8fddc6446839d6cd8bf014186f33f4bf2531e522b23ea. 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/USHM92022896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2174ca75e0b8da04a94ca5dc5c89a6b9625b58cbdaf89a13d5c21b59868b3946. 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/USHM92022900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a2567e6140efbc67ea0def40559069ca1247c9fafdf6159df0deaa924b1cb6. 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/USHM92022904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7532f896a05c30914b97169d313d7d57aa0195e8542b4705155c0c1668fe77. 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/FR9W11724305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130e42a2b1c8d6c631a598b0b2f2dfb949c808de8e1a0cd386564d8e35503486. 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/FR9W11724306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9eb23b55c329b547066224843832630b43451b3d1b9dd7392d9927f6c92900. 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/FR9W11724309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f2e52e59ac503448288497dc0401b5678b46749f1245506ef1c36a2818d680. 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/FR9W11724310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2bebb68cbae8f05100f1174fdf822169d25d5a210c40d9f9c1eb99195b3ba. 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/FR9W11724313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044342122e3b081339cf80ae0ad31d533cf53ac905f12beeff7edea419a49bd3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W11724316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e822fd58872d463a344a1a0392d7cf2fc70e7147b85ec01129efe805f6eea9. 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/FR9W11724318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c609462e501770694ec9d8ddab3ed5cf62d904554b287619af477643fe13c6. 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/FR9W11724321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47796645b5e3af9082516534b9a30e6acf1bd57a6d19646aa7822fd770a9f71d. 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/FR9W11724322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea5b4c8c09523ac11b25c9bd0cedea1a1d071b19688ce734bb41956eaeac11. 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/FR9W11724332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81684bf012ea76cc16e59656926902befd4f51952bddebeaaf890be0edfcd804. 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/NOCJB1801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe104869d726a6c2a173a0d824833f00d6b290ad77cbd9974141c96ad4551941c. 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/NOCJB1801602.
The Garden of Adonis, suite for flute and harp: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed308389d5249e48e2133e80b876fd97af598ef18af44ef2b147e3bcbc403a5e. 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/NOCJB1801605.
The Garden of Adonis, suite for flute and harp: 3. Adagio, like a solemn dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a49c8ae1197bf4e70b14a0b742d28a8a6eddb31a4a2c2cf2904b8dfb76f52. 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/NOCJB1801606.
The Garden of Adonis, suite for flute and harp: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a93ccdba21e417538ed99946629e449e669d3bd97792a8ea135f4a9f5aa19c4. 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/NOCJB1801607.
The Garden of Adonis, suite for flute and harp: 6. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca2497b7fa42665764922f4f04edbaf4b5669b5a376568f8746e735f5ef1e3d. 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/NOCJB1801609.
Three Spanish Watercolors: 1. Guadalquivir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376a22aca24ac33a095850b43923da314f0ef0d28307f6c3caa7e0cb6665c53. 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/NOCJB1801612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b32467abd1129a051b5d275e3e7e130199370e77f5130bb0eb09ede03a74a2. 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/NOCJB1801617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f13dc72fe439707b32ff311ab14f6dfdf7f08f05ab8d4faf543e079e8e5656. 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/NOCJB1801618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a0743c6c41ad768eb1e91f46504ae2161e3868c374ac7291076e79be5de2b7. 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/NOMPP1902040.