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 0x9f9ff8037831831bcca6a8ec787af665ffeb1c7a14e3d9ed5c24718b97f9ec2a. 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/4602b096-4501-4cf8-9947-655881e072c1.json and https://artists.proofprofile.net/proofs/artist/4602b096-4501-4cf8-9947-655881e072c1.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 0x48076b4676a929ccd916a5ab62e1c88f0743b424e48bac07b1307971d3c77b26. 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/FR9W12240718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783c064243d35a254f2979fefc9de162b047010fa261d839edb8dc3a8feb324. 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/FRDHY2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc44f48a988ff0facf59ca5809e16b445b3b3807a2f303a7d14a27f8d4f5a5. 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/FRDHY2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db6437c381f9a9be459848f3cc1d06099f24eccdb9ee3d272fffd135b78efd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRDHY2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff95f9b25e191445f4b917422138e2d25def7bd3c47d5e74b8be8eeedd35d4f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRDHY2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783c064243d35a254f2979fefc9de162b047010fa261d839edb8dc3a8feb324. 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/FRDHY2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc44f48a988ff0facf59ca5809e16b445b3b3807a2f303a7d14a27f8d4f5a5. 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/FRDHY2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db6437c381f9a9be459848f3cc1d06099f24eccdb9ee3d272fffd135b78efd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:31Z), 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/FRDHY2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcda703352bfabe22cb4d96c1555cd010660c9c00bf91430d05009275c46991. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:03Z), 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/FRR642301504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681251a2afd7211eea2fdc93a5808dacab59de00dfd7550d793d3542f9b271bd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:30Z), 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/FRR642301919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681251a2afd7211eea2fdc93a5808dacab59de00dfd7550d793d3542f9b271bd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRR642301919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4b58394ad953fd04c5b33f4bf6c37e4d836d640bf152fbc7677aa6599656a. 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/FRR642401031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbdf6c3c60bcfc9c7ee070a2fcfdc89cc47e107bd594e62193be00161b37ddf. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRR642401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbdf6c3c60bcfc9c7ee070a2fcfdc89cc47e107bd594e62193be00161b37ddf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FRR642401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1d0ae0893b61000669de1f8655a2dbd99cc5ca0eb53527023525cb71132765. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRR642401748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1d0ae0893b61000669de1f8655a2dbd99cc5ca0eb53527023525cb71132765. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:19Z), 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/FRR642401748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc54f9078d9e7d17a3e98d9caf7ade46e47322be854dadafb1c62d3b57bf3f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRR642500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc54f9078d9e7d17a3e98d9caf7ade46e47322be854dadafb1c62d3b57bf3f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:26:48Z), 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/FRR642500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc74e53bb2261a814354b9782c2cddd251c3fe93d427197ad6ce003fa516c9. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRR642401096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1d0ae0893b61000669de1f8655a2dbd99cc5ca0eb53527023525cb71132765. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:06Z), 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/FRR642401748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbdf6c3c60bcfc9c7ee070a2fcfdc89cc47e107bd594e62193be00161b37ddf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:01Z), 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/FRR642401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d51f1dbf0d756b1e1aa0e596b940b8fd8967d38d53803027dda08ded969e3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRR642400937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc54f9078d9e7d17a3e98d9caf7ade46e47322be854dadafb1c62d3b57bf3f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:27:47Z), 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/FRR642500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc74e53bb2261a814354b9782c2cddd251c3fe93d427197ad6ce003fa516c9. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:15Z), 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/FRR642401096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58219c25246953ca08174390671f5919c7dd17f9a9881c3072cae996aa8dd344. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:15Z), 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/FRR642500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb383ff31deb4a3440f58dd5dbf86161fe6be6bbb0889af2925f431a54bfb3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRR642500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58219c25246953ca08174390671f5919c7dd17f9a9881c3072cae996aa8dd344. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:40Z), 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/FRR642500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c054d2059d4002fb8a151604929b4d7811cd59c506bf2bc9402498a0c96ec1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRR642501073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb383ff31deb4a3440f58dd5dbf86161fe6be6bbb0889af2925f431a54bfb3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:05Z), 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/FRR642500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58219c25246953ca08174390671f5919c7dd17f9a9881c3072cae996aa8dd344. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRR642500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e96d640b2606d2c91a396bad9331da6d1f7927ee21909c65e8b36a524c089. 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/FR9W12431152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e96d640b2606d2c91a396bad9331da6d1f7927ee21909c65e8b36a524c089. 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/FR9W12431152.