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 0x56208c804c910d76fe94eebbaef1bd3887976958ce7d798d8f39d817377ca37c. 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/e5890ad4-5ede-47b5-a8b8-c0c26965d213.json and https://artists.proofprofile.net/proofs/artist/e5890ad4-5ede-47b5-a8b8-c0c26965d213.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 0xb6c896f2ec1d3cefa38d8651bad5478edc59bbbeec45737d3304354c9aaf988b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe029df13229a7287c61a65c770eb01fe6300e936eef5b8c792a1ddfa3882fa83. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB002300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1198fe977a5031829147c3ddf08cadc3be12e05dc5e168e6f885f6faa4198937. 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/ITB002300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaffba3706ecd9eaeb7aa243891d5d7049f60b9cd3cba6d3a64dbe2acae155f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8ac09fa35ddcb242ad03f89a86ca3256b6a6cfbc04cbb5d4ee0b8c61f2e92b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB002300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4397a2e32108cd4db3c5eda208157de8c5905894081ee32ecb01e2f3788a59f6. 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/ITB002300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec2f8df9dc24fd03f275987d28aabfe3c12fa61b7759b78227d3a2e85f2423c. 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/ITB002300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab8ac65feb57ff413059a61c7eb28f4398a37aced4da0478e470cf7d54a441b. 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/ITB002300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37bb6dfd0b5ac3ad1dd94458b2919ab3e4ac8b36ae8ae48f0ecc7bea034f1e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB002300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee516d498a8ffafacd10a5e13c400cf679c0c09733d085b9567a5e7d3f4ac72. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB002300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d82daec341905e70a1b9a99ce79ef1de9ff99dcd69ec76e35528aa21be33db1. 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/ITB002300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27ba44329faffd67db309de8d65bf5fab6213e0c8fc099323e340c6d64d883e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB002300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebf982ba87a1329121c376bae89f0aa0289eee6ed1f08477f24983929eb160. 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/ITB002300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc68f8a70927515dd2c695ca46f96b266dabf6eb7cf1728ee9fd303d11a8ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f0188533edd54219b68358eb51d4ee8cadde931cd55ec1eb042b9d416d2d82. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83d485ae615112b1e270ec7bba4fe9a40549326b82bff8163255e9b656f0127. 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/ITB002000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31322a9e3876b1f7dee378bb96789d49c296a3b71533ce0fc04f2cf8fe2c0d1d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc4f8275aa2b89aaeb42e6dc97dafabc455c4da435b88ac3392f6a036196ad. 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/ITB002000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb10ebcac341c73cb3078a970225b2e75aff6393e8fc97c2a13cef7feb04c41. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB002000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a73aadef0fc06a59f5c930532beb15c256bbc2483c45ec9aeca8be20bffebe0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900640.