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 0xa96e29c70630cabd2c1f5c8e1ae7d6dc90f69d43f155e94718325ea06253b4ef. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc4c2afe-e98b-4472-a874-d9319b5c5d1e.json and https://artists.proofprofile.net/proofs/artist/bc4c2afe-e98b-4472-a874-d9319b5c5d1e.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 0x1b9091b033a583df08b353ada1cbc385c713a39bededb728a179cd1884654214. 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/FRX762166442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2785d331ee1b01eb269aea94e4f500e9cae27f51e6058fc58c1a674980b49. 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/MYIS10800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612920cde7c1e049dff947f61bf2f56ffd20c9d2e0004bed50a79a757638326c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MYIS10800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958c4a8d9e8f08876a17edd916b6192cf3aa78993882365c41053a04318c2529. 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/MYLR11230527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfe5364b1dd65f0822843ef1e8ce120011a389dda3825456e1109c82cd5825e. 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/MYA129800186.
Nostalgia Emas Lagu Pengantin - Selamat Pengantin Baru
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddf449f8c6f5ad4e909a733c64a07349ac9bb4fb5436ef1d1fc020402c36ec. 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/MYLR11330287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a18df546c8f4a03e17f7439f9959a40f828fcde88e09a8867eaca1abcb9fdf. 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/MYLR11330290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a4e8b050a5a6c0edf48144e5eed621aab1e70b31b936c59fab5b28a75d2ae3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MYLR11330303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958c4a8d9e8f08876a17edd916b6192cf3aa78993882365c41053a04318c2529. 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/MYLR11230527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de24326878f1a11f4cfa8a1143b72cf7371aa795402c6fcaf7d763e6fc2988. 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/MYLR11230501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a18df546c8f4a03e17f7439f9959a40f828fcde88e09a8867eaca1abcb9fdf. 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/MYLR11330290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddf449f8c6f5ad4e909a733c64a07349ac9bb4fb5436ef1d1fc020402c36ec. 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/MYLR11330287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f1d574d518fa344b29298f51b33bb87151688490d20404a09464d10fff468d. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/MYLR11330451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b4efdaa3f238f01a7fc34504aa0398d2f0b380388ffb5ac41708dc8ef8728. 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/MYLR11230520.