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 0xb5c71f5d12179e6550c9f097880aab4df34f8acdf30ee1f35ed6a1312d370105. 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/0977f687-9d08-49b6-8482-5058933b42e0.json and https://artists.proofprofile.net/proofs/artist/0977f687-9d08-49b6-8482-5058933b42e0.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 0xee05e657f26254ac1d477cd915294e7f0a30d8d6c19952f4bddfdffc9397cf80. 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/QZWFN2323063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199e080e3e519d7aa78f3eff8823d3a98d323c1eb0efd158ae416c320e758b90. 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/QZFYY2326251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7b7e26b7cdba4d3f9c6c3b527fe275b06c50995f5124e730c616cefccb0bf. 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/QZFYY2326252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127688c5813ff9fa63819ad207b0757d283495567c5ff4ca93475436d452d8e7. 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/QZFYY2326253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bcd064b6f3802b3dd5e497541777d72b388587dabfdc5e16f90a2e455203e2. 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/QZFYY2326254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33202e4b2aeec066a83f32a1a195723f5f592b58c9f9a438f74cb8079433eedb. 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/QZK6F2222076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28834a86f65d2839a00b70acd898190e14b7233f5e7cfef3406d3d069bfeb088. 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/QZK6F2222085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8dca69182fd71e5da94c6832ef5ea5d8c4d142c34af663b717bed214fe20c0. 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/QZK6F2222086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357b7700843bd69b244c8c78204d73778d46d10c0c09afd0991e4c66513bf1c5. 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/QZK6F2222091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefb78ebbbaaf6b98ccdee971765e6a4e68c6e326c7b2dc567dfe71a5ab2cb39. 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/QZK6F2222094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8317e351226ec3b8daec79e3dbc7a739dd02657506466d34a30a1cc83091bc2f. 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/QZK6F2222097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd04721fe7d2a35d1a9feadbaca89f0b34689e14a239e01b22f67291c0ae8a8. 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/QZFZ32263165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d39d7b0bc2b5735bd50432809c04777d4995f9e25f2fbb8864d4d1edf2a0441. 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/QZFZ32263167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d8a488cd8708b15250b48d87887b8f1cd8db6a2535d64d0d51713a0a1d1c4. 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/QZFZ32263168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cf66a4e766b38e1097592ba259b1ca4afa91ebfceb583d7db4a17e161b6c20. 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/QZFZ41915633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5498455a848ba6370c0eae040ba65267e9756d756d7340cdb5e229ae5832786. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ41915634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcc33d2b50004035c1061e34184d926fdd6b337712793dc288b4472e6b8a383. 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/QZFZ41915635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42749fcfe50f14642ca0d608572f994f8080667cbae4d787f152e061abf5169b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFZ41915636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347edd66b9da4c98fcf5946432b4a87453626aec4619b626d97e45fdcd572ece. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ41915637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e0f0a95d539102ec8e292b9691763ba2c0d36e29ee03c46265f033b1f5cd0. 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/QZFZ41915638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c65f1cb2d3dc2a0cf28105e1064c8d615f0ab24de1415ede3a3df0ad80fdd. 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/QZFZ41915641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354009ce4512424be7e41bd23f122d4fc795272f25aa687023b4d4bcfaff7432. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ41915642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dfc610ffa2354caf9de806f628077334171c86e6c4618ca1f28e289419637d. 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/QZFZ41915644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ed2f64fb432d4aba8823f1ad107a244d5c590c5ee06ed12a14258e8c26f09. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZFZ41915640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61f102a4d63328e0dee6a6bf39b600a428c9a857e22afbc6f694d460d4284c2. 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/QZK6G2413204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e04135752c7e96d8ba3b9df0cf066a23f16a58612172632f98b62b946d9be9. 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/QZK6G2413205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbe9cff89b5964b4605ac83833e64c78a87fb3b0775c430f5a5bb7c7a6ac849. 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/QZK6G2413206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687b2b9ba22cb861018f18632f67af25e2dd3f65d72e827b37343d32e94203a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6G2413207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce70cd12da1a20afb33efbe1549f265c43046a3aea98bec5c1629829769fcc. 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/QZTAZ2345855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8024f24a66096e9e5c861e9e5f78e7ee9f648fbd1717101954df2831dc1a51c0. 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/QZK6J2131681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac62e53d037462a095c76c63e19e5b21eece3615e0f6684e98ba6b720b5dcbf. 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/GBKPL2147468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bf9243f0a7b866f778f0cf063d9f49f6cd21b8e88a5a060d70fc2b3761ce5b. 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/QZMEM2030979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5571e27db1b0250e2be6f99676fc72523b9e6b0df280c35a78ae2e32b6172630. 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/QZAKB2002284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911bf76cedb2eb4ed926ce8a8a97ab79748f9b153365ee86da1985a671359f3e. 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/QZAKB2002285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b49d3b55ce1ba62a23a609eabf0107429bfed6065511d065469e9fbe7597d8f. 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/QZAKB2002287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b49d3b55ce1ba62a23a609eabf0107429bfed6065511d065469e9fbe7597d8f. 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/QZAKB2002287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8d4630daf4214f44f995cb20af9f4436104dd59fe00ac007546d1c68b7902. 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/USUG12200584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e764cb873f65627e30946dc76ed787d621bc95ee86f075922f2dd91e71fe1b7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMER2180112.