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 0xaeaa1520e39fedf1fbb8fab93d1a2172ae7d3b77f8146c4fa2b7f1f7966e7a26. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9a28e92-072e-4dbb-b25c-31271fbe16ca.json and https://artists.proofprofile.net/proofs/artist/f9a28e92-072e-4dbb-b25c-31271fbe16ca.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 0x4fbb13d724526621a72f74c3c3d93422eb7addde59e9a8d02381173141e59855. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:57:10Z), 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/UKLPB1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e23f930324597b2fc0e333f1c1367e1f224cdde1f3a493a215cbe7d2f436a9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:54:29Z), 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/UKLPB1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99141ed845507bcff763428791109e08ca32493d114879d3536b8fc2fb18fd16. 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/UKLPB1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78e2ed2df42693015d4102b0f107ecdd39205805f496eda97cd56b0def5e07a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/UKLPB1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127c94aead0a1546a41dbdabd8ecb5f829e5285c6ab5c6a072af4c960ab86029. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK4WW1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750e57a3f2e0072c3c233b17191ed93a350a56b86e9d9b285041fabda514e4a. 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/UK4WW1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a74f50e9efeebb1444804ee860fd877cfa28bb2be1ee8675d5fa3f2fafe773e. 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/UK4WW1400003.
Requiem Novum: III. Cry Not in Anguished Voices
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce959f4e1fcfc25b299f701cc2731e6163bd9335d4ef344bbed9e9f3950a518. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:16:28Z), 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/UK4WW1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68fca6f496243121dc9a0863909d558384f7545f4aa7ad9b013ea97879ef46b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:04:14Z), 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/UK4WW1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1705048c392843607a622d1695debe267f8d89c44a9198f973cfa3e59e98c0c7. 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/UK4WW1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c254995e4c0ae0984c1cb6b1998c436c2016121f4e65ecc66152bb116015bd. 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/UK4WW1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8855479b5fe4636e653a1ee6650c4bdb7b02c480bdec902c1eba445560bde199. 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/UK4WW1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5699e890410fc7c8a07afaecac2d7f128f439beb1478c8d582be61a1fe5f1d06. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:34:27Z), 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/UK4WW1400011.
Requiem Novum: VII. Here on the Other Side of Eternity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b55fac78ab2631a259f83e0354a364ea116a45d1063eb41038946e7d14e6a7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:52:33Z), 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/UK4WW1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127c94aead0a1546a41dbdabd8ecb5f829e5285c6ab5c6a072af4c960ab86029. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UK4WW1400013.