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 0x28d93639932a0a9c43b8e6cfb54b4a2ff1c45c47661bfcf056ca71558a261e6d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9868f73e-c05f-431d-b04c-d7a643d2bc4e.json and https://artists.proofprofile.net/proofs/artist/9868f73e-c05f-431d-b04c-d7a643d2bc4e.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 0xf1ba66119009aba53080524147092f94dadc096987f5aa11a456fe7a072a0943. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:33Z), 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/UKACT1650497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622cc8b57b7d8a428333ea4317949f3daa2e371a3a349d7d683148a5d5528bb3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USNRS1938442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cb997d6345c68fab1b4222da23c827237f57521e3544c50010f3745e6cb0cf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:23Z), 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/GBDVG1992901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcabc43fa9c84341fd1075a589915ff78cc1b52f46033f76093e6c142eceef98. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKSJ52020001.
Under Your Spell (feat. Clementine Douglas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4737f3b8d6f50868b47e05bb67f62be9e7dd3aedb9d8079a72382728c790b6ae. 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/ZZOPM2105663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062fd98fdfb6e97821942cccee449b655d5fc1dbad590e1eb3700899e6c466c1. 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/QMFMF2443209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97f155a234e6d55f9f3dfef16a242092fbd1416657aa141b93daa687fb4915f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US38Y2507015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e8b415d1dd43ceec1ba80f92ea01aa7d02373dc00ef6e169521c3942b00c2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TX2590639.
Waiting For The Sun (feat. Daniels Goldseal)
You Can Not Hold Back (feat. Koffee) - [Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b11182cf8a8d85301db5a6cc6d077367d998449d572da0811f62e94bfe09d0d. 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/USNRS2039415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5779b347194d3b9b84b6d494519268e0256486ced3c207ea8f008d78e22e92. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USNRS2039414.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch