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 0xe5bccec3da5cd3b5941d006cf508666ac76589c89a5c26f89da82d1d51c35143. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f2a0001-f6e7-48f6-a5cb-df5b6164e3ea.json and https://artists.proofprofile.net/proofs/artist/6f2a0001-f6e7-48f6-a5cb-df5b6164e3ea.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 0xdabcb2488249885d368f09f4d13808445db4359a82f44eb048ef811279583e55. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CA5KR2045903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80c6739a42dd46a62ba022c53b6e2e58b76a24e3832f0f66bb5524f88bb1638. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:26Z), 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/CA5KR2045904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0231fd347686bb0fe78a223843671c112ec8ce6d5c2a0f2a83451aa0c0ab74ac. 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/CA5KR2045905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fb5db26d87c295bc9eb9094d7f9f02b43cdac98ab6810d31498f6a44d66433. 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/CA5KR2045906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f023ae3ed252f705bee0d87a31cc4352f4d08d182c32afec615dd11a049fdd. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CA5KR2045907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ced50b7de8f688357050cf464d51979c542b939a81f9979baaf2aa43de6cab. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:09Z), 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/CA5KR2045908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4d2efd0e03e731b529dce671bfe0ebff64c2511969a01de35d6f07ba5ca71. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CA5KR2045909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e979a94284db2d7645b227ba7ddba171dc4af3e7c144bc42b912b94d2304af. 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/CA5KR2045911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a2a0377272a1aa5c5291849476b0104dd4d7620b385d61dc6b474e6fc0858f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CA5KR2045912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2093cc329bef3d5226c3411d1d6b808389ae6d2caa7e54bc53a82aa3230f265a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CA5KR2045914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd267bd2dca2de78a2918701ac61c74cad84f9f4810e50cb6954f2ef0c239223f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:25Z), 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/CA5KR2051511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc9838c06263ed549a744e0ef937f7bf80736ba7fea9a52d96776f9450d8079. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CA5KR2051513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea82c28634f37c344e08fbe7327fe11e61499f9075782a78c80a5ce0586a8aef. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CA5KR2051514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c1563f25e0d362bfd154dc510bd06c504e46b599028372efec7054ffd52da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:22Z), 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/CA5KR2051515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133f324c747a69c34d3f460688842a0422c2d790da811239f25395f3c9dad63f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJX2526065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b977642ee9aa7cfa54468b5ed8688490a5f62dc1e4cff8e14f01713123c03b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJX2526067.