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 0xeadd3eb7d5f67460455e5bfdbfca76ce31ac31f0dda8044cd9c292b85b9856bd. 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/981bb641-f40c-4934-bc9b-f1d21e12c3e4.json and https://artists.proofprofile.net/proofs/artist/981bb641-f40c-4934-bc9b-f1d21e12c3e4.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 0x484676153df771fb7b5ac71d1acfb87e94f531e14b8b235522a7b40e2ddd7075. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBSMU6813848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35fd0a36f80b720580e4678a39faf63bdc197aa56bc8ba28299e7af7c83e910. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBSMU6823148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb353db824a7f17282b90cceb7b88bc62a82c3527a38c335e89894a1632117f6. 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/GBSMU6950040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de1dc9853e42b45a306c038eede0bb6332e7f34c85546f61aeb91a5e56d3dbc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GBSMU6980119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c99787d2ac351a1765a4a9041242600c648011cbd82e476f4bc070baf749b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU7266000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13738b11f2ee298836517e45053538b5ab395a5122d820bf7d048d484e7934f4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBSMU7266138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9208348bb6bde78c19dd72eb29abc6ac65b8cbbef8b511dc597748e96983f30e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBSMU7301067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67fcc92f632276e63f9575555713f4226c50eff4f08dfd69ca189f26a95593. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:33Z), 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/GBSMU7452438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d89e64aeba21a54bc322a07e875803148fb9e65f8da3b56506fe6075e2232c. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:11:38Z), 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/GBSMU7452442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6ff3a994eeb438a16dfe5ed32abb5abc3cb655ae99a086596819e0fa83450. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU7521244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f741b581c6547f4dc86b65fe3741e9080e88c81ca96f42499b7fd12a9292340. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBSMU7528249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe667f0a54ae4f8944f191fbf7a54081650fc58548ace55d4405c3782da41a4. 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/GBSMU7563541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b63a51a7a4611b3cea95eff0b4ac6f304b1aa0fa511d3c8a71cf0f49b3c3fc. 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/GBSMU7563548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61194ca89c62667b1fefff9514c6ac7f4ee9d2163ca684229ce668ebf350f0c3. 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/GBSMU7603771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90a6461f518c3cc6dce757ad3f3cdaadd5d0521239d8975d987c871066625de. 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/GBSMU7614008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b068af7596f20535d3552bc49526ddbc46eb8cced6039a6449b05877dfe726b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:01Z), 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/GBSMU7639649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2d7402124f89a8ebf4f53e0c585ae10a39f1176f5d7fa3a9799494d3ea00d3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBSMU7639613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a8c247133e6a37b46640f04494be2d8cc3670dca6afd59aa700946cfdd5b1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:26Z), 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/GBSMU7746362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0edbb32f700773ba9a58e31e031904076f3228abad759ec12dab499ffd1ebc4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU7746234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386eb1e53e22fdd005c9e5eeb4bbb1b9070d32d8ac9479710e3b6eaa4e6a55cc. 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/GBSMU7828365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5548cf3c044659f4d68ec01b44bb7d86018256f8c1f0d4691f29eb2a6b9db3b3. 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/GBSMU7982611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dd392d46bbb8250726d20ddd9eafe06a9938ae83c20ba4cb1801707951f63e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBSMU7828266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c803da5d28c6f4d3f4b9cf34f4d0f8ffc1bba986abf7bd0923177eb49560f3. 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/GBSMU7920656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd3ddbb7e7bcdcde8b280d6f9d357437c8453c182ef30dc17974b006868568. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBSMU8538983.