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 0x66d1828880506750bbdc0140ede700339df7462e4ddcf427286fa8c24c4fe631. 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/95b2cc04-4a05-4735-b3d1-746df65fd0e2.json and https://artists.proofprofile.net/proofs/artist/95b2cc04-4a05-4735-b3d1-746df65fd0e2.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 0x154af19a55baec059be024c127cb78bf262f7dfd24cf67f4057764e502856a1c. 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/CH7811818478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba50a41118a020b58eb5530d475517f673e27bb241d3feb0148bafeed16a7a. 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/CH7811818479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3ecc15fcb6277bbc01506e75864abb97b7357b7fcd586ce7498ba613a5dfe0. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/CH7811818485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b3e4d5e60d6c2465f5b65a62518555f0459cd27f643981773a1efcd5d95fa0. 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/CH7811928424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc4ce3dd49bf61cb9166b0da3bd0fe56f7eac977bf72bb8d04bb47bf9645527. 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/CH7811928427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde53f8d593706f456993d5831486c3b6f86c834281ba86a64f0d90c45e89915. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CH7811928428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed553a51d46edf6d192b3599851989fd685da6fd272d8a0b5e2381d742e9add. 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/CH7812191992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b19f0d0e8cd7f1bc8231fbf589fce348308a19ceb9c871ae1ffe4c42b2ab71. 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/CH7812191993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb05136df17f38bedeefb58cc4fd07ddb346694195a44afe3b2aff8ff37276b. 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/CH7812191994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9bcc83eed5da089b1451ee476c7bf79401ce69d1a75fd5e70ab0a88a62bf3c. 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/CH7812191991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d46d06e8107ecbc4614619050c1f816d29f4a8c9cf9a1d71796f36d0b0d33. 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/CH7812191988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100c8f5bdf4fe2ffffe9ea35852a99c819a51a2e30055463d49039afcc0bc963. 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/CH7812070825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ea1c1be66ab280208c5f3f99f1059281ffeee362894978c2f24df28d2d370. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812191995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b23a67c50789a27c12ceccbab80a04aef8a4e89e1b818689065f9ab75b2351e. 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/CH7812191989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3374c79d5161af1e9d64a11137680e8f175f6e7a649d098d26f4a56fab8a1d. 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/CH7812191996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec74c4fac48d168bfeb4e1cf55377f95e5f0df24d98db4ec6c295c8a6d5ce71. 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/CH7812191990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9520ddffbf68cb6fb25744ca2480278f60b43a8480ede4a2b8b61e833b870502. 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/CH7812353996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b132bebcbe488c8498e339bd50c94ba16da3e0d81155b1f0aae4209ce48ad15. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:23Z), 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/QZTAX2343756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292e088b4421b3e9489921b37eef26f6f2c99e22ed7295791d1253ba8112142c. 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/QZTB92256354.