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 0xde0ad2b76571ba5ccc44710bc74c98763e228228a3b8acdd709a14f7903c1148. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ecf1e91-7e04-4825-a10f-3f1188676295.json and https://artists.proofprofile.net/proofs/artist/4ecf1e91-7e04-4825-a10f-3f1188676295.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 0x4b776839acdcbfa0d57f005df58820330769849184d9407d69fc1bdba4949244. 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/GBCFB1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1ee9c7c32fb58ead08d9bde69c6e565fed55791cb4a0115cb0ad62e943584. 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/FR05P1600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7cce07b1a2efe188e81c52e2bcbe5a9d1de005ca9ab2d9c829d7fe69307a13. 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/FR6Z71400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83346586e81b5022f8bb6d910c84d0ce7b04b11d6d4812da6b12d7f15e7981. 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/FRIDO1401450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393274646070c3e08d73f8c07cd8986d224440aa102d6bf5c09517e240d8d7c1. 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/FR6F31636850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89222508a6c47a74b02b6dd1d1b15d3adbd69f92351728fe63e420482fc55a45. 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/GBNQA1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072bbb16aae471efa5451fd79704f0055e2b2511d9a025312d9057ec8b641a2. 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/GBEUE1400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00bacf179c4ad314455218261d87cbf432fbeb31f843e2eabd1ae2c236dc670. 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/FR2R01700360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060aaffdf0eb95ba03c88306ea2fcd157bee6905adbdda5faca459369674a740. 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/FR4EO1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edb5195f09447d33d4a503829d8989e51dae07c194bd431a50c9bf63bdd7718. 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/IT2XM1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4970c7a764068a14508a325def041ce6a45ae7f8748a3fe242a14256cd86441. 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/FR6F31636860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6f2a591ba9f4575920623fdb20f31847dcfaf0f07db74b615aa674c14cb66b. 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/QMKTL1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6a2ecea7f3167cd2245c0e58f4309b8ccfd227cb589e55d3c79384ddb2616c. 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/FR2T01700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ed077e45793ad032f2e0a55daf5fb3affe679b44f1be9101c08c2ef537534. 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/FR1S00900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3e5618bf211d68b06ba7cca3360288fa00db35c7697b1770bb53f50542d3c4. 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/FR5R00904570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13e553460b10a160bcbdfda0aa438045146ce87a2c70b3a801666cb4c1698b6. 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/FR2W61400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5729dbf31455227b8962c2b978dfbefe0b5fbacc2a0dcde7b02f426ca95f8787. 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/USD8D1634010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dd380d52847671f51cae8ce9f80ea91c4de75b42cdaf8ffb8740b90ea36bd2. 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/FR1OS1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4934fc5ad8d01eea7ae60a43e3eac31796c5496907b056620cfc601ca0af5d4. 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/GBGLW1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29349707216e19742341ab4922465b392ee24235ae1f5a5a21d9a7f42f049f80. 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/GBUM71807073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ccba517f8c6e008275f740ac2dd3b1505fd517ef4ce10a3b8b448666ce930e. 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/FR05P1800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d774bff64d0dfa7b19a3990d8a9fcc1eee108d03265034df2aff9c7b985c6b. 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/GBUM71807923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a870ebebd1f0b851a3908e344d3eef159d5137e10c85795103e8e2f2ba22a7. 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/GBBPW1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5880a80c7478b03e84d13bd6ce54f50562fa4d412f89a1ac3b9209e42f08d52b. 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/GBPVV1802618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9f7e6d447c8d9fa22718151e255d5f6d7cf57c1520641bea8db8ff47ad546. 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/FRP5Y1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d49b444c9918c936bc5518e38e4141d0a826e04cda7dd657a259ad0f24b9b99. 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/GBUM71807977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c98aebeddc5a8b4a7d587f40b980bd90dbd4f119c523fcd304742f403d6fa2f. 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/FR1Z41900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb3e6e9f307920db4ba4830b0a441e4caffd4a4a5eca1c4b259d8ec0d9eb73. 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/FRP5Y2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a5d2726a1e9024e15aaebf4db8e7eca4194d308b53b05d3242ad62206ef1d8. 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/FRP5Y2100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9f7e6d447c8d9fa22718151e255d5f6d7cf57c1520641bea8db8ff47ad546. 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/FRP5Y1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd9956dba9eae4bc7e80f060de6d092c4d1e42db8627220b6c879ea56ca6ae6. 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/FRP5Y1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9442ccb5deda035235107aaa6a378649be1046a0689332cdfeaa29861c576. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRP5Y1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67cc62f91829dd90b1029f942a78df58e5b754b8c20b78474957956c0c6b6e6. 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/FRP5Y1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeea60b57a4a63e9a8007690d65f4e5cc63081fa98c8f5f957e6d9f6a35ca154. 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/FRP5Y1900070.
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