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 0x16c90f8fcaa5c47255ff735bacd8885949be5a834cf3ccbc787f4a62f9a91612. 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/b7c774e2-0bb2-4def-a81a-4a9da036f1da.json and https://artists.proofprofile.net/proofs/artist/b7c774e2-0bb2-4def-a81a-4a9da036f1da.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 0xf6fcbc92a8034a487c876d53dad1c698cd10e53ac25ca5ed815e1f97fcba05cb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:06Z), 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/SMRUS0060046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabff599fe9921711f4f5cd366f1c1b6ad46fd8ad2f145b3ee505b2a2487c3b7d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0060047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5470da7bab6c92e0c4ce3d57ec149b4883af0c3c64f7956fe38213d4b1c21b3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SMRUS0060048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd5f40b50f002d86c272eab27ac9847987d321f808b263b8e401c73bc44992e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0060050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd004f29fa3b77a61edb5f53da3aca56ff297d21f8a7b8b12b76447aef7ec7f38. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUA3R1928351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dea09aa365412f5aca188a97a407e2a315d04ec699547c7c57df56f87c95ed. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX202095276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b24041552874f8e2ba924a6fa5004fa66cbe65429903d5fdd735790ebe03b53. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX202095278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7341a7a6d52e3259b3c9e14826d043dfe52f5e020d512635c4d764850c546. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2X42198740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2eba1da893e562e1c7d202f69b298803b9807279093313be748dd2238a1561. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SMRUS0072017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3274ab2be6dc3c7c1132408feb19e967159362d9704cb2375d949321732c84. 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/SMRUS0072018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bf5af1fa06f8616610cd6fcac83060bf8ae113824908570208fb9ab5400514. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SMRUS0072019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4921ce741445cc19fc60b3c795a2c59908931e028cad1b2f0edfcec8ffe1f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0071984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152aa4093e54323b6611e06a9a8dfe7602f122e39a952fd9393ba3cb32c95db. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:55:10Z), 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/SMRUS0072021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935682ecb091579ef87914b300de4f7bfc1a6fea17bc49b391e6dd4c5b03ab7d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SMRUS0072023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06a7f17f1bb9271dd995710661dcc81311b1ed5328ead4e0a659c8847141a9. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:12Z), 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/SMRUS0072024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5235672596c17a4afb8873fabeb8262c9e4e4497518a845b05f8abbce71a56a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SMRUS0072025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8208a521599b0f4f2137bf621331ca4d4a3f1858cccb8c5d43a5de3607308c58. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0072026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7b6e7b6843a4bbb6d2c6110d3aeb809699140002241a683f2ffd1454682f43. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0072027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0c6ce8d078af2f7ca4b34e8ee1dfecc2ac9e445af78a938c2fb2db1e76a842. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SMRUS0072033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac322bbda743851e09386374d7275003db44993284c7c2223b485a83fc952554. 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/SMRUS0074254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88a122b8a5bcfbb8462e6d13326e835771893a25a38f7aba24df730a5358add. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:03:21Z), 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/SMRUS0074255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301a18438596f57ac323872dc4eed8f9952b62ac3fd55b332a86030f5c2bd0eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SMRUS0074256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ae17c07c136c7bf13e751dc35ef47ce5de8aa5480c5a2e50590dc2a752297. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SMRUS0074257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dd968c8d17634283f7b62f5963294bb72753aff161546b954a700819f3211e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SMRUS0074258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01967492d9b04a773b5534cf4b84280647dc65ece4f49d0867dea0d99a904406. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SMRUS0074259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867adf07591792a113ece0a2fa0206b368a415fa985aa2d953c9c9bfc73e324d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SMRUS0074260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59339eb8f0bf67a39bd106b0d6e6f2a440b1d49bae9bf8e6cbba1aa6ff1c1d51. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SMRUS0074261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed56bb1353a30f7683631b19273fb5eabaca195fc011977b651791a28ea6f54. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SMRUS0074263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0e6681f650ccfbbe791a138ed858edef6b1a800eb21c550a9f92c1d451e09. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SMRUS0074522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208bcf4f31eaa10fcbd396d971a4d3a26c8ec0eac478ddfbb0cc101ecf77b55d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2333219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1103eb4ab10dbd2d5a37e9ec3d4e120dfa11e1245a50969262582411bcfce522. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA1D2333231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df496ef5d006338a8ce72349c32ae93f7fec55904b937c5a3ede164601dde96. 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/SMRUS0076777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12e9b963b469705978f70d9be19944daf98be3ff45d73bc040e52c2156eb517. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:01:13Z), 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/SMRUS0076778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe45fda97e5e65d9ac1009e5757390df0ce847fd753100487a6af4963825fd3c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SMRUS0076779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1164a21d568de8c108358d3aa28f9e086c064af3964347ba89e200893bf76787. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:57:47Z), 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/SMRUS0076780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164513f4d9566070e84c6044a789fbcf9cb92ae81056e9cc2425f5ea85219dfd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SMRUS0076781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c0e28cb896dd186b21f7bf47505279b577c4a36ef0981db897fdffb35dee81. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGT2471284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28de94064c621e00c4d09396f6430d88b77f75437ab4184cbb4a31ce834f96c. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUAGT2471289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc010f875c3b43b32d0d8a81f73426a48ef8ef1093adca41acce937b79e5850. 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/RUAGT2462239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194286a8093ba852a74ef043982f8e508051f0d3088e8518b330fa2840b6bf31. 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/UKEX32008788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87780fedafc5a9767b82ce75c3adad8e5c3ac3061e8fc42f42d59f6eaa4ff5b. 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/UKEX32008793.