1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x647c62ab2c5395b46025e3550bc466a26df5538dc07862e54d237be200f6198e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e59efa8-5bcf-43b0-88d0-24a2784c184f.json and https://artists.proofprofile.net/proofs/artist/4e59efa8-5bcf-43b0-88d0-24a2784c184f.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 → block OTSBitcoinBlock must exist at that height 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 0xea43807a9cafa51aba48a18806ceeccd0c77eeacb1733a7dda118860860aa949. 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/SE6XX2279540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c763c7de3b0db7e9fb313458289e4e13379ff8cf3efded56942e0297e6e7f1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6QE2321119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afc9c73a59481bc1ae718aa958ee1d81a0473e3afc504b4e4ab9137aa61b9b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SE6QE2321120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5265d2d63e4fe45b7f835017e69d3d05266efdc3291fd23d0df5d838aa709080. 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/SE6QE2321121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c16ffe2dced506b4903bd1ec411653588984b8f305ce45de7defedb3591fd11. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE62M2365305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47936a70a84298681092da25560df3cd4ae964b9eb2f32956747b2449383f090. 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/SE66N2336734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbbf12622cb9168df7daef342cbf5c7e492181eae4759c631b3ef28f5495d81. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:02Z), 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/SE62M2352159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac56ccbf9fb0b71b173b902bf52919dd0d3ffd9c4a2f057c928f7885b4a12ba. 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/SE66N2324524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580016a86595a67ff3803aeeaec89fe5af4b422ec8705093acda5ffca08f9010. 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/SE5752431312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b1dc5b839059317e7f91f8e918a3afcf220a5d45ae201c1cfe3ecff57238c3. 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/SE5752431313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b36e1fe4917548b914207ee387bae26f396c2816a8856976fe35ec001737a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:46Z), 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/SE5752431314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e246e9e23527772ad68cd7c718236fdb29f5a4bb9534584537a4cd8e875cb1. 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/SE5752431316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85bc437a6d36f6ce035a8c716ea80c38128ab7eb088ed076842bf8837b1117. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE5752431319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ff83ff73a2b7d2cffb50437e7171bd6221fdb32c204384d0aac95d49e1d2b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:17:52Z), 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/SE5752431323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35a20fee6865161e84f0d162d9716e1443d2ec21fd70b9c2e8cae19a4d80b82. 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/SE5752431325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4687f637fd207cfbb6861acde619e75ee00f54102dd4c7415bf2eedfafba4d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE6SA2488624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314478d2c58a3453cf6369bf613b9ab8276655174815087a02c177219934da2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:26Z), 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/SE6SA2488626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17eef6f94290141a13c480569c01fe3d421e88f0fe96909a32ccc19447e46c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:25Z), 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/SE6SA2488627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf34bb5ddbb4622d3c8da0856f4901ad5592527605c0ab27cca3cb3c8dc6fd6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:03Z), 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/SE6SA2488628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e41dc20abea00bc6808d274ba307177661788d8edf6621a0aeaca3557ab3b. 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/SE6SA2488630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0334080c012493af5b15ddf1f76fe766027d430859f20f1e1be43378da84d636. 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/SE6XY2575485.