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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d085562d8110931af3e305df4e460a3b750f367538cb357eafabeb880182b. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34312c9f-3094-4c6a-a82f-38b0b105bebd.json and https://artists.proofprofile.net/proofs/artist/34312c9f-3094-4c6a-a82f-38b0b105bebd.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727c0b872a99b17e9576238b01d4f42ea454a8dd329619e4343c515ee2676f1c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/KRMIM1806407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02451e7de44a2634c51d2517922cd21cabca65354b9853ed1f1d0f051b7752d0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMFME2195405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978c544e22b89f81225b2793e8e33567cc861845394c318ad8ef91fa9eb27903. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QMFME2195407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1add2b7e3eb8c61ce0526afade8c9ee9743a4c32875f1a88f596f32403d94af2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMFME2195410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc79a64ce62febfe0f63055d0a7901022e2b6f91f6d570536acd073fc74279. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QMFME2195411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97f17263852fd17a092c195268f5318fbf2c8da5b323eeac09a926fff6d1269. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMFME2195412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee54f3d7757a1dde6ddd135f6d97ad8774de850f7b36580ec3ae3ff3c61b96e2. 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/QM4TX2205639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c45266b5f2df2afc98cb67c74a9b89f2af511d176dec198ec79001528ff85. 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/QMBZ92366977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40696e05b91eab285d25947855198dbcedebb758988bde5ce98f888e09ef4c6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ2404329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc09a8ec87e93deb88aad60a40905cb1e9ec8dc8b943abafdca81db565748f. 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/QM6P42418453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf453daedfb59bfc827a60cfe9a12db8e37bced4b273886cb1cdd1e1a3feb97c7. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM4TX2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d9f17023314105efbf39b34e2c82ad7abf7c9383f5a572ee0d4da34c75c865. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMFMG2335879.
I’ll always wait for you (feat. Deepshower, MiiZUKi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234bea46437d2c5d8b8c5ed683f633bc675c642f293cd183388b41c23ddad6b7. 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/KRA381905136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7df4aa67ade31a21f24955a0dad0a9ee93c71e9c0d4dcfd308ea949e37cb07. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/KRB472102048.