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 0x8681c5a664cc0deb9e6efcc3eab232ec2a309a04cd2e9f8f6a6c0e658705b34a. 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/3db14e70-e03e-4a3c-9412-96f5b720762c.json and https://artists.proofprofile.net/proofs/artist/3db14e70-e03e-4a3c-9412-96f5b720762c.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 0x19378ad8a79d860747adb3aa5fdf4accac8caead3c2fedc3864c7f0e60852ac4. 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/AUUM71800994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3e7888fc9ef02e7a530d3bfe3464db0ba7f26cf7c027d834767f5ce12319. 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/AUUM72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6cf448b165e7b314d2e6d877fbd24530a41ee3ade9cc39bf5249c77aeaefa. 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/AUUM72200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f367cba1bd0b263839c45aa196a9bc5db9dd92cb8a8cedac66649ca0c5ee1. 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/AUUM72200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36efc2891ab4feb6ac4232c4aef7d545ebbc5bc0edfe0e8441ff2885fd510b0c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:08Z), 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/AUUM72200248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f367cba1bd0b263839c45aa196a9bc5db9dd92cb8a8cedac66649ca0c5ee1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUUM72200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4476af0052be474ca86d1ed798e6096e4dcca194c795063951ed5c5dc26835. 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/AUUM72400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c3b2cd104600b2ce1fe25cbf408299377e48cdfa345f419a555ec7ac6b916e. 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/AUUM72400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e20338f8f88d636f6fd327a9fb3b94c87c9eae299cfe638731ebb6848f670. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUUM72400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e462e3703179d2a4948440640e17f9ab5178d055ecc7bcb9280e81869299cf7. 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/AUUM72400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3e7888fc9ef02e7a530d3bfe3464db0ba7f26cf7c027d834767f5ce12319. 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/AUUM72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3e7888fc9ef02e7a530d3bfe3464db0ba7f26cf7c027d834767f5ce12319. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUUM72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e40af2f2b06501a6e88fc86d6f433ad7eb8d862cb3d983803fe68a7350afc9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUNV01900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df9fe0c9b1ec115f5012be21e6f1e203b969d5d8f8661f35fc03b91fcc812e6. 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/AUUM71900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6aac42c5869b07f3d098124246b5d84b2c3812db9223a32bb31e50f2df4898. 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/AUUM71900695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb3c6cc275a67d77f16f956fa8da6519d20fbdb59e9a4bdfa9d0fa873be2066. 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/AUUM71900374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3e7888fc9ef02e7a530d3bfe3464db0ba7f26cf7c027d834767f5ce12319. 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/AUUM72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d3e7888fc9ef02e7a530d3bfe3464db0ba7f26cf7c027d834767f5ce12319. 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/AUUM72000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b4e33311065032e9def2c43ada1b261be6752cda015664c205d9031d7ede39. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/AUUM72100238.