1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x02c8a4dba50ce61d1150f3dcb1d1805625128d9de29a002d52c23c2b330490a6. 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/befe8010-e31a-4ea9-8bce-17d2877e94bc.json and https://artists.proofprofile.net/proofs/artist/befe8010-e31a-4ea9-8bce-17d2877e94bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hotel California (Piano Tribute to The Eagles)
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 → block OTSBitcoinBlock must exist at that height 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 0xd24ee34e525ed867515be1be2935464c0c54b5b91dff864fe9eae684b7830967. 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/USTCF1061991.
My Immortal (Piano Tribute to Evanescence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4b9bfa7092717695820fcc0b37f9d1f1e94b73a6ea7fe2d3bf4b3f0138535. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USTCF1061997.
Nothing Else Matters (Piano Tribute to Metallica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e94452379dc4d498fe45b60a60fc59a41e452dc8a5d6df6efe7ce5464c4baf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:24Z), 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/USTCF1061998.
Smells Like Teen Spirit (Piano Tribute to Nirvana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf94986669cae62f04b08265e5ecabad9c4e115633e8b62da7cb2e900af0718. 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/USTCF1062000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c5362073c92f74a73ab3d59ae9d628e3e99b90510c7e236312c418ae15e17. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USTCF1062011.
The Final Countdown (Piano Tribute to Europe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83df59dd41c6dc529bef6d0a5d721ca440711ef678d64a8e304363243c9d8c. 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/USTCF1062014.
Sweet Child O' Mine - Composed Or Made Famous By: Guns N Roses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc4a1d7ae47276ee00bfe6eb16dc40d797230adff122959b592905b7ee4913d. 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/USCGH0613849.
Nothing Else Matters - Composed Or Made Famous By: Metallica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd059542ec6fa2f726170105496d59b562bb86e7bf7b8eebb4709cb4c9b92cf03. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USCGH0613852.
Smells Like Teen Spirit - Composed Or Made Famous By: Nirvana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148005c080764c7061d9988da34f94913aeaa6ce28f87e26c9d701850e2fa45. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH0613853.
Stairway To Heaven - Composed Or Made Famous By: Led Zeppelin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd423e7e09d25904493e367c16fd9c5c9d283a230df85bc00286065d85cad65. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGH0613854.
The Final Countdown - Composed Or Made Famous By: Europe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a12d145c7d051607855a86199ee12dd9c309cc9fe08bafbe30bd4b0fb587731. 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/USCGH0613858.
White Wedding - Composed Or Made Famous By: Billy Idol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c58465c177991e81ac4bc4ccff8b6a5a0ed1baf8b1f0b53e11cf8b58d8ec84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH0613859.
Pianotarium - Piano Tribute To Metallica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77adb276a8b98a2010f4047a2eb33bffbc1e03c424e68efc8b1332040ff57a27. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P0695256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013a961bf9a81c4f49239f0f2f22c0f8bef73d3c803e43cdf1eaf5c96493a4f. 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/USX9P0695257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42addb4e34477e91acac6d8358985de39f92cce21b66930940d36c6c1d9b3275. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P0695258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7666c67ec840991219f9f2c0b6203f6e1541dabb4788b197ff25e71b7fd5d2. 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/USX9P0695260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51daf9e5e5ab419c9b108de9f31cc2e390ed78b8b7a5a06cca2f7c1f746e006. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USX9P0695262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c5b6bd6e7a27bfc0cf07dffc9178a2b7d6c23b8c1619200739fc888f190e4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USX9P0695263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a16cf5b60c36da4f730b1aaf6a103018b9d18c05a8bcffa31cc84a81a95453b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFFD1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb3b31c892567bc645a2eae2676791effdd788f2a71871dfef5423f17433f04. 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/QMFFD1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1410ac49bca0003cb45d87697e880be4a8330f7c44d4c977aa32a5542976b74. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFFD1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0a6e5e031cf459fdd14a0cac692105d22caa19f8a4b97ae7edb99eeb14e76. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAAW1144503.