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 0x2a2bcfbc5904ff4e130f58955cc1ef6196fe0ea1c9b48bc3bb0783d0939db935. 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/ddad9828-897e-4c3f-85e8-28326681ccf9.json and https://artists.proofprofile.net/proofs/artist/ddad9828-897e-4c3f-85e8-28326681ccf9.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 0x680a6ea109f7628a1596de473393f7b926b0f0e3f09afa1df3f9e3e050418163. 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/CAQ8S1622972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683bd85f10818cb7768c32ecf20924c9a20668ba33dba810b5f27242611ccba8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CAQ8S1622970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b15503fea6973d7dccec0b14b1363a04c1f908ebd108d3db994df83355557a. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/CAQ8S1622984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b16639635881f2606fe0d078f899405ec765c9aaf919edf425c8fb4b61867f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAQ8S1622959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d4027a6e4b00192142bd1f21298164afe46f108444735c4884670250b17fdd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAQ8S1622911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1221d955eec7865b839051e878ef1081a373817514422209bb999b75abbda8c1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAQ8S1622958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99bca5abcd8e1a71f19fd00511e4b7f13992c9eec6cadab62077e4e17963d4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/CAQ8S1622908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7f29d5796e13963785e9ca0bbc4cbd1fea5cbfb015aa4c793ce7eecf719af. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:53Z), 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/CAQ8S1622960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c17f1295cf2b25a06e62d1a3aea7a5b6223faea765c4847a8d023ce993797c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAQ8S1622966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff92c861ca3ca0255b9454c2fdca3de3bce890b9bc124435c7749b02a06c92f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:43Z), 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/CAQ8S1622910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7763b22fb441e536fb13d8d2066500c53b449f5713b567d3bca01f1740b6655. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:00Z), 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/CAQ8S1623165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e656a39bca74e148f22816198909dbd2f5608d748de2370e4a64ae88c967af2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAQ8S1623149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a901a97832249d36f9b3f7245ba5f26e10d9064cb60b6a08566792ceb476beb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CAQ8S1623152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2ce48b498509cffb45f5902d2cd35386f27623bd87503541cff819df3e3bb. 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/CAQ8S1623158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e5f9212c1fc8ad1e4be4ba34df276dec23a976260d8a6b9c55ddd61d4096e8. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:46Z), 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/CAQ8S1623159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15b883ed6b699aea7c6e8e73d36b737713458d05b504f87fa7f13e91c5b407. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/CAQ8S1623160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4ae9be5a54294934ab8ecd97f2960143bf550ddba76366d364f9c0e9fc7446. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAQ8S1631773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde007ff885f84ceb21f99a7a2b61711b03ef7d3887ff117d13fe73f1b79d3bb. 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/CAQ8S1631742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246e91e76098b693c49f4c20b7aa95810529b2a783758834d03462c8fd7fdb5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:24:28Z), 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/CAQ8S1631775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9250fad7e922b2a4000ecde16b964183f1999ebc75711f49f0aab89d8c633126. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAQ8S1631741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e1a569923f25928d1078308285c3ace90ddef10fe6d916d878229836b6dab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CAQ8S1631731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dc1bb3ed7bbf9856f2d26361a924e8b8653d077856cb8b2e138ba045562f62. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CAQ8S1631745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca8ddbb37b1986732a049c707cfda5d93e7de5971a030c20e9fae19a85fb880. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:35Z), 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/CAQ8S1631746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b7827a1abf6e22d1fe54b6e670ae6e6320008b4e25530b2eacb070d3f64a6. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CAQ8S1631919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1d0bfd852556ef7c25c428276599d6c080ad07f32190c7ebdd005362ad9dc9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAQ8S1636169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c39fda78ad603f212dec2476b23d5b3fc12675f3886b888613be09db6c25942. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CAQ8S1636164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3186028a20eab47397da9689d90592e0fbf3ea6ed57d0aee90e8ba2d7bbe7a28. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAQ8S1644624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef41285da605ecccf3a2afb4c89811f86d34cdd6341c00be3677304ea5845dd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAQ8S1644626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8860c60fc21f8afba9ee399135b65c24e21c57a5b31314ece38b9c08b59ce33e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CAQ8S1644926.