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 0xf0f16c1591704b9da2550d0b9940ecc7755a1801de1443b6ef2809b58c5d834e. 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/6694e7ce-4198-44ef-9176-a2a057afe000.json and https://artists.proofprofile.net/proofs/artist/6694e7ce-4198-44ef-9176-a2a057afe000.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 0x8484a40195ee35045aa586048b23597a5ff3ac6fecfd9ea9a4f4d01c5b18139f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:02Z), 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/USLD91754565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fae871221855c69c56cedb3e72b46633e0b5b1767984fdcf196e05c0602e3. 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/USLD91754566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1379743b0a16ab5c34e61bfde19e6886a2eafedf8f7a7b149605d5dea7feff. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLD91755545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1de457fcf90c6c6a44f5c059169bc31d42b61ff8eafd864107af903a8b93e2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:35:06Z), 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/USLD91759921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2601e10a42d7503301898d25cdd665f49fd52ed34f440384f02cbf6b9a3263. 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/USLD91761340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbead32199b7e42ef470c94ded893faa1b8075174cf68fb40017bffe79e29e6. 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/USLD91761443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e35edbdb8b5a6274ad52c4e001e9f8b0dcb1745c56376b31bc2d6c3e6741e7c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USLD91761871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad18de03fe2ffcfb2bdf2d025637f34364c8205fed2172800a8c3f74cdfd8571. 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/USLD91761872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3a8d5c33c93e467305008ac19ed3d977321dcd4d4eeafc6629e9fa9e9cc16. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:03:01Z), 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/USLD91761875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a4cb9b92c7cf8076041f812817dd539adaeec691c5456da9e65a7ddb3536c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USLD91761876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130840d69acbf9256fdfaeff4608c64b90e89d57434647ede4d5292dcb210140. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/USLD91763866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8961bdb129c60bd18256d41c696626cfbde8995b816caab5e4ed520fc2130837. 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/USLD91766627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13caf216b791d626431f2365651b48b9d2927a9986db0ea4c4527fbba0e1f2d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:26Z), 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/USLD91767632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870066efed672111c2db008a6fd63861f323b6728695ee1d64578fa415a41e2c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:04Z), 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/USLD91767634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7b5d2daf7d31567e797acf8ab7d4c59fc1917ecaa9f596d41775cdbb460eb0. 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/USLD91767635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea172a2ec4b8142129efeee17a1f7c06207c8dfcba63383575ebbdaae8ab47. 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/USLD91767636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcccc4465af839a59ad5066eb10fc5790ea84e8970a825649bbab0508caafb7b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USLD91767637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7138ab8192b1b8673391cf3011362a8ec91e4705aa319ffaecdaa416033e66. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:27Z), 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/USLD91767638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2dd367c20ff5384440fa4018756452e818ba6746ab34fa7172f9d38a3831c9. 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/USLD91767639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d54e7e9254e01e9ae12b3a85781e6cc80b42d4049e0ace43bba68969bc8c8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:26Z), 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/USLD91769301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d8ad823d98ff4940252b57ec7c60e85297d67b246741811769b1d07c2ba8de. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USLD91769302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a744682ed7c82c39f39a0d36ae5c73da171a5e129fe117134f6b0c21037286a. 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/USLD91771485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8177b92ef3f331192fa5fd89383f915cc56f0a200e046f64712a660cde1a58f. 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/USLD91771486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d9124aabf84f018ce26f068ce8ac26398f00f20623f0b3e4246920b315a4ed. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:53Z), 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/USLD91772237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceec1d95e17dadff16230844f2d4e73f8b6c01d3448db89223ab3a4632ad332. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:46Z), 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/USLD91772238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea47780e87e9edeb6c54036ccaa81714bef9b391bea28a2016dd7fc0670c96b. 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/USLD91773763.