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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca95564e4d588734271e681169e4a89661a7df00dab607d3d073b799769671. 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/79cf8640-26af-4e32-9bcd-7793eee9819e.json and https://artists.proofprofile.net/proofs/artist/79cf8640-26af-4e32-9bcd-7793eee9819e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfb47e6b443cea9a50788c8b9c324b5d2b2314b0a9eff2da6a6092367f6c03. 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/QM8RL1400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3524f2ff635cd1f0028bfbc81eccf132e03d68d73d2444e6c70a04331ae1c77. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKPL1794255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea586a4473bb708a74501706f4007a703fca5fd9086747be5fcbebc4d9bb9c. 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/GBKPL1804070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe542bc0c4d42fdd87ad8ed3dfb43e4d9078fa0fbc36fced365d77efea1af197e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBKPL1804067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44285d673c776b3f8752cdcee5fe19f99939d7f6a3f8f067e591ea18931812c4. 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/GBKPL1804069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a237f3cf1c284daf5ffe0dafabc848c8e7b56033711aef08c3f9ff9f83a2311. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKPL1947850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3af7927b41cd607d2d133a469934963a8484772b727b0e1d9fc121b542d67. 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/GBKPL1947851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb3694c35b2ef22d3a3975ef68155c781fc56618cacd45fb40fac844ddeb8fd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKPL1947852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13f6a518d6f48275dbe583f4ed262e45695b6bf1e97a4872032c57798e6882a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBKPL1947853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c120f336f9a6176d0d4276191a056be4ec1d851fcb7736c778a6ee949235cf. 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/GBKPL1947854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fde842db11ba27a3b8c991f1f8384a64af48e96b253fc7a9021c8abd4e7da24. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBKPL1947855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4137ba2c48c300bdb42b6319c9bc263f9b0a0f7ed32d57df4f55b34d60331a2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBKPL1947856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cd242ff9b17958283003c3ee4964bb501a2c93f35207f01630bde94069e890. 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/QZHN61990461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2b50da09019ff6e7c8ba012da66742f4ee931307501aec12c4089a6e4ce93. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBWUL1928146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378dff6d85824e822f5750ae8071db54b5e4658e938256b35849a3564e9e4c45. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBWUL1927928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f737f09b978943f7c425171427391f358f92f386b0b86820fd67a4f1ec59f9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBWUL1927929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae7a65c43d10d9462dadfd9191c57755c674433fd554afab3796fb93a84f9b0. 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/GBWUL1927934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a201de3a00981f01c6eb221c6b813d00f166afa47e2fefbae142b0dce2c22fd. 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/QZEQU2039960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8459a42f1614443d6f43214413a70ce4ff788bdf3124c5da641bd527613faa5a. 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/QZMHN2005686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4770819f4e06d329bd7882b9da986a10a1aabfdd12d4b4bac765981c1eac1b3a. 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/QZMHK2007215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefebb963f84254f36da06881fdd7f5c9d9f1e673810c947332b7f5bf8b5771ee. 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/QZMHK2098208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48befb108693bfeb32f71d29a790701926d8c9a7acbc92f557338741a728ce38. 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/QZMHL2016786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a201de3a00981f01c6eb221c6b813d00f166afa47e2fefbae142b0dce2c22fd. 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/QZEQU2039960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c78741bd1a1e07ca90d22efe3228cc0e4a79afe63ed8adb2ad1bc0d667f99f. 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/QZMHL2056953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb3d981fe9e33b068a083bc5f200a50a1c17c4087f93de6444e60359475155. 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/QZMHK2036725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b070688c20a610c0a3ed3f948f0e1b1d10661ec8ce4350a66195a64f842878. 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/QZMHP2079026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1208635a568f92f3915643ca64cfa296a8058e68c2ad54f2a77b614b761bfca. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/QZK6L2079399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0efb47db58803910965f86dbda4bdbb684df9d29e404960f2dee9dd9e06786. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZMHM2063567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d2f0efca929f9171d1299f2b61c09a3bcb938c4e092326ece3ef05bb079c51. 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/QZMHM2023590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d35c198d250eb02b282014ba14a42ae01bf810b46771f56f92d0101c110f8ba. 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/QMDA72227030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ff7e633aac2987b2e3e0ecc369ad2f744f6fdd878b92b5b32076d32b6d3d1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM4TX2448288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06843207744baee2d397a6653af2ec39b7f2961cc057a9182c6249d130a88a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6N22467595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8279c14942a619c73cbc95b79d6a94eca1598412ee8da86ac29a3c679b5d6e8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZSYP2401563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c307914a083f722f04a033d00cadfcec543a062a817be0b231bf21bcad5eb6e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZSYP2466706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f0694cf86ba934535f7721b6bfe836a37b8aa2a44e130e5d96f89e26c59746. 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/TCAIS2481960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d89e87b25e6da2026b933079c4f45b8b39f29f61535875300f26ba613a7e3bc. 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/QZS672576426.
Silicon Valley (Music from the HBO Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfb47e6b443cea9a50788c8b9c324b5d2b2314b0a9eff2da6a6092367f6c03. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM8RL1400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a16217634a2703608106454f6be485e5f02204dae3d2c19bd8cea5b87904eee. 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/GBJX32061130.