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 0x477d9c5ee839cc17742ab73a8ac6601cd81c75c4bf6e5be8bbd741693315db26. 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/d8d217ea-b8b5-4d7f-bdf7-73d36d59aad8.json and https://artists.proofprofile.net/proofs/artist/d8d217ea-b8b5-4d7f-bdf7-73d36d59aad8.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 0xa419fd8c5587b0a10605cc357e4d4bc1486e86a3678a4074ad962491ee72a4c7. 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/GBLPF6729419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae0aa90a081dd4c96b141c735cc2f947c7a2340710fbdf25db87f481e5b078. 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/GBLPF6729422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd273020071bf98e773ca74eb7c8ba2e0257f1f968030002182c3844258fa1e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:45Z), 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/GBLPF6729424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8468b30a2727e71e6e8c2ae0c92d1bb6cc62fa2b8196b26e9731d935740e3293. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBLPF6794831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684ae215e211ea13181598871d788d050b86ef530464d3cacaba595cf107c08. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/RUA1H2476223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1035789f412ac1c2d751389f91a7e5fef5921ede473615724933adc41e30bd8. 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/GBLPF6794848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d36c6b734e0c96edc809657d920297ac2a14911b7acdcb7dfda86eb3461ca. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:20Z), 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/GBLPF6795626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c189dd8308b568606b09b7a7d933ed0eec85a258a5006668ab2b6b43e5c04d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:20Z), 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/GBLPF6801947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93773d8fa688479f8f70bb8c29f9fd09e657aa854fc1cb937e2a27e13e391fa. 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/GBLPF6807780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f356f52122553ae3dc9edf17203c6e04a7fcef47d01087fa37ebbe652a22f21. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:56:57Z), 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/GBLPF6809026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc6a6371e76c7646b00f0c2a11d85e5fa7b0f704c2666b567387afdba6d099. 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/GBLPF2506118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79660bcc8923df02e9baaaaaeeb9bdda7249a966ca08c7064bf90238384ca211. 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/GBLPF2508907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d4ee496c066218e737847d6cebe3b50a52655a3f003b04ac986800480323f5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GBLPF2508909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60acd2d42061c399a7fc998c2c77f733904babff4f6de61578c9b35701250fa. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBLPF2508910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26faf44f58979466cce648dc3dd1a693de215cb08deb2de6558c03e27b5086f2. 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/GBLPF2508911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e7d3b2d2f0cf898e51c6ce89a7c2917ca3290dbe6a6b64ca8cc764bfa9ce6c. 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/GBLPF2508912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4a70eae956301cbff771c3295ebcdea87738a3214bcf29f020dd24f609dcc1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLPF2522770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505291a1c18f28af58199f742787244502843d39da73996c343561bcc36d202. 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/GBLPF2524917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ee0b5160d879a41f5310813a1414854632d8e3a7e6cf761a059b2700ab9df. 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/GBLPF2528289.