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 0x2bc3b14978d8772ada58a1c9a074b2f5ea58e539e911112ee296772974cfe040. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdcaf6c9-403f-468c-8c17-22b93d9cd475.json and https://artists.proofprofile.net/proofs/artist/bdcaf6c9-403f-468c-8c17-22b93d9cd475.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 0xb67c1b4361802e6057a6fc9b3213217c33237e1a31f70aa4142fe1021b01dd9e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA5W0402934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252737605d09b5a49c95fa0935a03063152b416f20f43619b395dbfb30bdd8b5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:10Z), 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/USA5W0400813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746622b471be0f9522ecddbb67b906b57384d4516c03db57286c7dcc66dbae68. 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/USA5W0400843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b5740ebef247f38d85e570d6a802d2f0ccda10527a27c4bb8465119abf8cbd. 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/USA5W0400845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3697a315625bc6186538184d6acca34de96a6976befd75b955362250b4dc3990. 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/USA5W0400816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3084564847ad0f814a2606b52629b344f55288989270fbe63b57df528853a6c2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USA5W0400817.
The Old Rugges Cross with He Was Despised
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42245a5a36862599a0bf9ca38b2c1480b0e8fc4337661e9a28fe8fbeb69cea8. 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/USACX1302678.
Jesus, I Am Resting, Resting with Thou Wilt Keep Him In Perfect Peace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795817b1b018a65337399eb37b60177b5aa96deee12dfab9093cce7ad7522d7e. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:00:52Z), 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/USACX1302679.
Joyful, Joyful, We Adore Thee with Doxology and To God Be The Glory
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b1ce1c77e53b9ad8c4f5eb440327f9957d67f76780f9ef8967d4fac1f76ed. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:36Z), 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/USACX1302680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66eba644e45e5d3491062d1608f20e1176f0bceacce70d0ae5d07088ba6d70. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USACX1302681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e884b461e6a1d937cad56fb5a4a1b2111e2c853b361036d442c596527b78192. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USACX1302682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07247bd4b27b1f52663f16c5ad03bda5292ff303f1379d1d8eb169424a9f850a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USACX1302683.
Sweet Hour Of Prayer and My Faith Looks Up Thee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39b3520bc70aa069075ce079034d18b53eeac58e5c602ae3530b1f1ecca8d35. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:58:35Z), 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/USACX1302684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d83c7abe05a2c05c6854397d14b322ba563c609ed5587ac3b3841fa077c234. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USACX1302685.
It Is Well With My Soul with Sheep May Safely Graze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1c4387824f5de53fc1eb8fa8195287fa6e2d71742eb375335aff53c1af78d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:15Z), 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/USACX1302686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbdf860247108c0cea1e7309a6f767ff4fc8a362aec0abef8b5a86006437e92. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USACX1302667.