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 0x6b096188e64da54fdf5218dbdf9de6320c0a83136c4a0b09a8b57c2a2e5140df. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdf7445b-9bd6-4a75-8a82-b95d922a7edf.json and https://artists.proofprofile.net/proofs/artist/cdf7445b-9bd6-4a75-8a82-b95d922a7edf.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 0xa41f8df3ed590a0f22632cbe059537e75c77781bfc85c631e91c55d38bbc1e6c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:55Z), 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/USUG12000792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9eb2f282ec5c9996130745576c338d40647215286a3c96f0837cc9b296ebfc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USUG12000791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab3edf0d9c5e73d26edd794e05066d33dc89a534db42fc110a275613535dc2. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QM24S1901814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0e8f5162b6bba3a0661f281d0d346bea8baae05738aa097b6ab368a387c3b9. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USUG12000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd369fa32e08e57ab6d9fbc882be91c28840636bfa03680a1810755a5768dc33e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USUG12000793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e006c207f4b926bf69c81bbd0f4bfa2c1914ddc379bcff807251b18c4aa697. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USUG12101513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9e27ed67403910eb5879a6fb8fb541670d2d3106c89d53f41f2d30313e9f53. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM24S2301426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c73453eae764aef4533710d3f623ebc1c803bec7d049cb649d26a073263c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADC1791536.
To All The Boys: Always and Forever (Music From The Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c73453eae764aef4533710d3f623ebc1c803bec7d049cb649d26a073263c4. 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/TCADC1791536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a703f952c55b347e2fa6cda6fb59b142b8dcf928aed8ef12258e8d9745bd872. 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/QM24S1901661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c73453eae764aef4533710d3f623ebc1c803bec7d049cb649d26a073263c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADC1791536.