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 0x4cc68b0a4b8847ae325f96cb3941a4c95c516498e2e432f353e7703bb5eed4d5. 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/eda2c6f9-06ff-437d-b0b3-817c6f964c64.json and https://artists.proofprofile.net/proofs/artist/eda2c6f9-06ff-437d-b0b3-817c6f964c64.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 0xd70dfc090709a06db79345b1802d230da1a97a99feda3efc10dd38526c50ec0f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:18Z), 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/USDY42115989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3aef51514eec3ed9acb695c3fb950541d8d795d0f82208b85dc6d9dfe73257. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:31Z), 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/USL4R2136896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ad98dd36b61eee60a14edfe0d5857418e903faa8f9fefa7a38b9d3fdb6883a. 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/USDY42214586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672b861a6ce3541de28f5b234db4cb5e342f85815fbdd356660819ab7f8e2cdd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4Q2211055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd54d569f825730768d0d13406646e83b87288d35720ad5e8c96be8507b1461. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4Q2336386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484101cbcbfc08af4a94ff1438e0d79d8ca8440ca92b8fbaaff28bbfe0cda57. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:41Z), 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/USL4Q2360329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa06d409628b5b6cb2774c2b1e88903529dd1adfb4ea959dbdf43a95dde987. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGJ2419879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3aef51514eec3ed9acb695c3fb950541d8d795d0f82208b85dc6d9dfe73257. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USL4R2136896.
Turn The Radio Off (Alternative Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95c3cf5c34fc8600632fb5785662ee28e3448ea9d7249481f23a91b27b72ca5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USHM82445832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e03dae34b994d2f646a5c6da275c186182cb3a589c3de7a6031697e5bfac290. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDY42319056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89858a3035ee55831d653c5215273966096d5e92f6ec48e98befcc9b37f0599. 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/USHM92408639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ff0e7106277d3a154ece3c9656c3e92e4c3b66cd05ed1a980162420e294765. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USL4R2428672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f95a260f461a44cdd66e560e400dd1ae54806c778e320afe9ddb7b017f33f0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:23:48Z), 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/USX9P2462855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7b5d3c465b227c56bc7031223f5e8aa4e6dbe8648a210d6a6cf37f8d848b40. 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/QT3TB2409473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20444ca8c09e78820caac72ab2f7931eef86ae8422e40a1f7ed91e27a270abe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2254087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e03dae34b994d2f646a5c6da275c186182cb3a589c3de7a6031697e5bfac290. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY42319056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77321cd5458888a9998d2f72a48dd5c7661ee8d2e15ddac838d02c6de95cc5f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY42519199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19813f8243c6f659cdd8d9dea3f633b17d9e44bfc2b7bbba91fbdfcb5066261b. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/USHM82537649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb697e692e0520b474b5850e594766b19ac94e8f6e03986fcc2042ff01b1ac95d. 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/USL4Q2583502.