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 0x9b45f8f9c3ffe4a742cc38e13185a9957e1d5a0d9f0d92d17b1defbfe4efbf26. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f82ecacf-72a9-40f7-b97f-99451237b4b5.json and https://artists.proofprofile.net/proofs/artist/f82ecacf-72a9-40f7-b97f-99451237b4b5.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 0x3d4f5df03f7fed4e18bd5df8ecdfc440efeafab73dbd6d05e640396bdd4f756b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRY510884420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb85de6054765c74597d681588462f298996d1fc2d550d2e5c893d0612fc088. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRY510884423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078a2721cf3bc4df43a23ee757770ab53a0e2050ee239467038aaf746ec258dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRY510884425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fe01e3fa46fc400f0e52995b04556ad5a7979697115c0e7153c704e4d6e8e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRY510884426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3418aad339f86295a107652c31c7ef4528da1173bf473a83f4cccbc4a54423ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRY510884427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b211825d036c88d99eec6be832acf722a01311c5845d6de4ca48c56316b58b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FRY510884432.
Le Lac Des Cygnes - Entrée (P. I. Tchaikovski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0889ab126665dfb0b75f67e8b98ea8898358410190a4c8532c649ae09441b47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRY510884433.
Concerto Pour Violon Et Basse Continue - Presto (A. Vivaldi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf90557fa283d78d81d324b32806bf6d7b2edcb2830c1fb850b53ae26dc1e25. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRY510884434.
I Will Always Love You (Tiré Du Film "The Bodyguard")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050dfc599312c75974151f7242e5b2511825cda5df566ce9fae61bc67cca924. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FRY510884421.
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 0x9c2c1549167a62fb12936feee9d39481fff95070e4e0396eb96aa8f20bfb0075. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRY510884422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9cfe771846aff6536af318a36bb499cc94ba305a9f1b1ee26ab2e57a93f800. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRY510884424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76d015dfcc1fcd9b64d62764576f20b05e740a7a5a1254da6c9719a9fff1d7d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRY510884428.
My Heart Will Go On (Tiré Du Film "Titanic")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222c1ad633a25fc9f73ef2d41d6dfa6d3303ffb46c8cb4bd217b2a3094d85729. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRY510884429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824cec43c02e4613daf9d8cdf0780ef9be6d57851393c6c0ae9ed1496c9e2afd. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRY510884430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c8afada930141860f3181019113758b471898957593b523f520e4d298a825. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRY510884431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa9386b7bc2340a3e4c946f372e9876aa0bf84aa6886ba47ae61d725cd5d6d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRY510884435.
Take My Breath Away (Tiré Du Film "Top Gun")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1c5e297fe179c37dedb838ef373b0589cf142e972df85d6fee9b4c2865e3b9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRY510884436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebe90c8fa40a3c4f0358e85230b95d051f811d4b2295325984aef11c8a2e48c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DETL61410659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65630af11eb1dc47d60406e86c903d946156870dfba225fb1c8be07ed89b672. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DETL61410658.