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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ab37f4d83779d45bdcbb94482cb1befddb179cf8a5a98504808a240c4e70f. 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/8de63c45-5ee6-4753-9fbc-06e7d7433f8e.json and https://artists.proofprofile.net/proofs/artist/8de63c45-5ee6-4753-9fbc-06e7d7433f8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Damn Tight Hold (Recorded at the Ranch in Mt. Gilead, Ohio)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6687ae28f965eb8ef7daae82befae422f860585e1c9916862986bdc30041dc1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:16:39Z), 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/SE6QE2249042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7297f5c4d103cd0ae67ab9a393cf9b5cd6eacf2d2fad76f80fae001bb3425671. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SE6QE2249044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc79f9951f5667468baf3b3c20e8b89743e0e112f42a85744955bff7aa250e8. 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/SE6QE2249046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46dc1e7c21a8c9ccda6c812767ec84a2787a90fb7c1b118e81bdbe46ce5066d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:05Z), 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/SE6HN2242269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc63fcabac8870dacf8748023e12f0f6c4b78990244810c4301d34a13278d72. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE66N2226409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c2b8c61e2ccb1254f580c550268a42bf1b8d47c6525b5ebabb45b6a9b18a3f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/SE5752358538.
Winter's Always Left Me (feat. Wes Barlow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d5f04667ebf3c17388ce552b1e07e79aa6284b61db070843eb8e50abc8dae4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6XW2357741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44625fc8cf889173bbb0932c8bc8db4bb43e2e946425ded27fc0471168890bae. 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/QZTBF2345625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd66b00761a3e57bd99e28a2871c805b7d9c4e1ec2ef32e4074eb63f0edbcd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:51Z), 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/QZTBF2345626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5610a7cdb5c4fcd20edad05c23d5e4bac26eb960a642c50a2b9a98131ea34307. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTBF2345627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823036df2cde773a7500797de3a03d931797831d9bec89c5c9fb1b7786476114. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:48Z), 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/QZTBF2345628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5a489276ed09d733e0dae936232a3c2330db209da4296cc496e09458018559. 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/QZTBF2345629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c146880d4bd55239bb7e045e33ee41d16602a5bbed75695a2664ebc75ec9c2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USLD91756573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203fd00f63cca6e926aa4fb0bd86bc1abfc626d000c4cb675ea126f7f3110a09. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USLD91766618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc52a2b3071560663f55d59282ef94bc898f600a2576cd0a88c734b5d289d78c. 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/USLD91766622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ad6b83fce94f9a5f092f412e096a7ff525d0f554cea843e64f39cfe18fe08. 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/USLD91767792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74393f210f5b8dc802aaef8d7f5032cf7ea29bb24667611eaea765fdf854e3ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD91767794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ece653d3d82ae5277c895151a8524f31dfc29a36e7987ef53e333001f1afb4. 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/USLD91780437.