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 0xa0c5209456e68780d7eeba0d0c5af102cfee17511b54df9df1a6296492ef5766. 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/f8f059e7-3eae-4289-bb84-e93c5cb13906.json and https://artists.proofprofile.net/proofs/artist/f8f059e7-3eae-4289-bb84-e93c5cb13906.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 0x3e9bd64ec7c7993430e6052633768d2041f16e72bf0a7d69121b309a75fb1233. 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/USL4Q2099249.
You Call Us Friends (Celebrating 50 years of ECYD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792218753b75442f9a56bf4bb2e96fed456f246b730a22da7eeedc72bdec1248. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:22Z), 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/QZNWY2126837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e55af3aa750eb4a95a6f1db3a4c08456376fd1de3e8dcdf7bfcd6b099f07f. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZDA52234197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792218753b75442f9a56bf4bb2e96fed456f246b730a22da7eeedc72bdec1248. 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/QZNWY2126837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e55af3aa750eb4a95a6f1db3a4c08456376fd1de3e8dcdf7bfcd6b099f07f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA52234197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ebcb6cb5c8e64f8ae1e6442f299bd2650155206b6289085a43f6db8d9157df. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:21:52Z), 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/QZNWS2271958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd0612d0f73400e89960961e2f68c472514ed60e4bb849f3025673d270f9f2c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES72382914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63032098672612f057019c7c37132b1414a82fe210ed258dc70308975e7f4a10. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTBE2371469.
Lord Have Mercy (A Song of Intercession)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bae38a2fdaa5d64a282361dd1fd8b18587995c19f57cac0fb48f47bdb65d07. 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/QZHN52419145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d21c1b24a97387de37b8ae76bd412b1d117f8c371a1988063f90add66c2be7. 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/QZTBC2435906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3233b4c842cccac1957226fc86ca2015d41020e6f62d851ba203afe1a620a75. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZZ782458651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415eeee9203f23563ce697fbaf885b83783cf7717a0addfc3abdab9f2caeb4a2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:08Z), 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/QZZ7X2448825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c57fdf9024ac55f21e92d3fe64c1ffb473444430adc798a39a2bfd96ee7a5a. 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/QZHN42553668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16848e3c713919e0e90f5941b8480a71800ad4a2472ba17328c548d1ff72fd27. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZWFQ2509208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e945407551b29f5f2e4e1f2579ecc0044ff0455d3ec090bc9681cef048d08. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3EY2528102.