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 0xcba28ace6af06f399c452f34818fc5da02f1ed32935208c50688a9482c13d2bb. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/631ceb52-a16d-44b0-a175-d63139905580.json and https://artists.proofprofile.net/proofs/artist/631ceb52-a16d-44b0-a175-d63139905580.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 0x4788cf960ea183a6ef6e242de15c27c0f3dfd141f444c1a6b282ae0f185681b0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUA1D2417150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955daf906b3910902042220c73d8e694aeb94f3d2e1fc97967958579677f1de0. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/RUA1D2465666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11daf1899a53f56ed738c0ed7519ca711b89c3ace696195826d62ce154963e06. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUAGT2432868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd5a9741ffaa13575ac5db9fcf1601244a7d93db265cb3a137e52e0cc68bb9f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUAGT2429092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea12e08b715cd431fb3e5df5e760ed95ccdcb2ca78038cb6acc35b4195df8b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:43Z), 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/RUAGT2444943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50d877c164572c88fed6c499a757765c3922f79a274a81843d678f724796bb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:20Z), 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/RUAGT2484023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb85b78650e0b322a56587f8934aaaeb960b07a3b45e9860df2a04cf547ad0. 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/RUAH62412519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7e6620e81169caad5fa5ecb00ce2a8ebc00cb5e3d4c67a14df6c7026eac88c. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/RUA1D2501632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8bffa66f0d4f3047700b26b1bdc80e96e2d3b39520b570f23628cb04352a57. 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/RUA1D2511626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac5571e2b5a79d286e6ad5f858b5a3ecda35802dc2fa0313d2661376377756. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUA1D2533481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd36e1fa60af7e8b2108da18271d77ce07db5d748c735371fabd2eff770c696. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA1D2549389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811d6e5fcc30598c8604f2bc7051bfff31a873c199077d3e1587f36a3371f4ce. 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/RUA1D2584302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3fee72ed8409fe309111006d9eaa54d90b02889bb2f6c029b071239605bacd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUAGT2523634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed542020635f2b89a09ef3b31d3b0bfe278785fd07513192c43ef9dbaeeb979. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGT2536746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac271d9be8563f4e6a9bf5dba59a08988ead85fe66ccd5aa2e8b0e437760e2. 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/RUAGT2552205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49637ed65a1409f1b76c1eabb0b330bcd3c3a77b73116adb6fc893c5e251de7b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUAGT2570916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad74486f10ca6f52c2e45869ab4248e6262389b549174f8e80c5d87dfc7e5f7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUAGT2581467.