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 0x3520ecde87e0a5e16a84dac14b71f673f88438729b17ff3b84f2feaea0aad9b8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/556be0f6-0768-48e0-8b29-28dd408f9215.json and https://artists.proofprofile.net/proofs/artist/556be0f6-0768-48e0-8b29-28dd408f9215.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 0x8d4226a2ca75b60050a138e9c206ef074fa1697559da09b5be16a3c880c4ecdc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DETL61608877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54e4aca13110195753e69cf4a14cf886fbd86fa0a8c964dead1691feeebc74a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:53Z), 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/DETL61608907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9c32ee1da81b4792486a8e6f6a98bb5d039569449d6e59c949e6ef9800df37. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DETL61608898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9f15db7d5bd357347d139bc4e912d4f705ea77cd6ba7926c9307aac122eab8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/DETL61608900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37a2e255f60df25a2e54495a7df0cf7002ea15339acf2a85e1cf126fc60cfde. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DETL61608904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb86c0aa81c9fcc96ad5acc463c66d980120a665386de8ca80590738cca19c7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DETL61608871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5456b6b03172a8c0de818b5dd0bae74406720def0607ab9db7e92518dc45352. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:09Z), 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/DETL61608905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb35c5830f2446e1099862e3c730cc37c485c9ea5b6f1cddacf6da882b4875. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DETL61903726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffc560570a285164409002aa111b0485874e1472a43e5b6aefa175438d4bfa. 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/DETL61903747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dd22c83add11c001ce7f87447f6d0bdfe47eed481f90b2fb54d14538de63f9. 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/DETL61903742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc6fc303251eaba6fceb8ab8a6eec61681396962a1d18c7bdce34650c193eb9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DETL61903721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b18babfb440952227d78351cd87a18f7fdd7c040dbec4adb1c8ada904cd1c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:59Z), 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/DETL61903722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65866a84855a0aafdc434eed4e5823eca2987a1a4a9c4f140db8a8a87c0fa040. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:06Z), 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/DETL61903725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0df5dc34440ac643395abbf5dfaba1669ec829a1ad6498d7c8cea27832524e. 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/DETL61903723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8bf515dd22e1bf5ea3a0b6262337f6121870bcec0f88f398e3dd04d3654d78. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DETL61903727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed60818ae1dc1519fa2ca48823f7b58b53ff33b1e45b9c1e3e85ddb081a1506. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:44Z), 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/DETL61903728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7fb8f1ab2eb34f95b64906940c9473c1cdce14af5bbb7867b7e40a5bf53475. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:42Z), 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/DETL61903731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9fab96d6fb094a107c2fe3a8657fa44c972395835b90d4289ec44ce9071bbf. 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/DETL61903732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31680b4a67e9257dd0a50bef5832d0cac6bb8839c7d3f7d47ed8887893803c3d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:07:24Z), 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/DETL61903736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c603dfd3bc57d405d22d30724e6ec2bdbf479f03c4e93fa6680c44d33fbd65. 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/DETL61903738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64449038374d31a68f32f5722b8849d4572eed7b8363e9620beb2748120615. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DETL61903740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ee01aed13308a87b04fe431578a861993283f0954d63987ed6669974230d88. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:45Z), 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/DETL61903746.