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 0x762f01b300c559a04e8ff72fad4649a4b203dd0667fca176d2288ce425aa8630. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee6ba3cd-4529-4768-a328-1b9d0fb819bb.json and https://artists.proofprofile.net/proofs/artist/ee6ba3cd-4529-4768-a328-1b9d0fb819bb.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 0x534f16b48ea39c613dfd432334f117bd3dbf36a7076e51137c03565922247684. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZNWW2177243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b345717263f380ea544fef8830aa335468eecb9ecb5b90845b1e22c7f05f65. 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/QZFYZ2238662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa220d1de995d8421a63cac2b7d427b6d7973706dfadee9111a8a26fe6edbdc1a. 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/QZDA82218413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c83d8d2307bf647392ffea37307363df74222a5d12d16aa0085d88a2670eb4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:00:26Z), 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/QZDA82218414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78cd290a17cd7869068111ff9eaacce71eae6572ddd166712d62c0eb843d94c. 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/QZDA82218415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87f8d3e38727643c21cc768dbbd89edd3305c51178940bb7f9d98d50e38339b. 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/QZK6H2268183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab44b4be89dbeabf4ef9a63f009eae1802783040319fbadd8fbf2cd2942453e. 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/QZK6H2268184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cff3986892b47370b239a10b1f57995932eca2f33e1f5e963aa409e53e7eb4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZK6H2268182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4896bb78e4a389230a0f37a2d21aed441fb10dfeca0938500077c3566e19d4. 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/QZNWR2274353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3753e75c71918ecff42e30fedfc7c7a60544f13f0cce7e0d4304e10b3d5d69c3. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNWR2274354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c76554f1eec2567c7c9427e9c3894b4ad0cfc49ad8e3767b8364fb6443624e. 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/QZTB42205404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eecfaa064937adbe408e84affe52b40cc3465a00a4d426b23ef200fe138c0f. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZES72397018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866958d0a4202dc4c824301c76cd0faed58c2ff84f58a9f43ef03ce3ee96a14e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6P2305667.
Dancing With Shadows - Rain Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fb35397db7d051f6c51c0a6a10126c3c83f4b5545260c2014d2b2fc92ec242. 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/QZK6K2356826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3540097fc52c768e41558be09288bad00dbefbbcf8a7eb5587f8c23095388e8a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZK6K2356829.
Serenade For The Stars - Rain Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67075811dd2f01528aea0dff5343043a6fd33a348615c392d63c01c1285c2720. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZK6K2356831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182a47874599da19f80f25e425c4e7e7167a79fa6ed1128364c310eabceeca6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62499807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7380b8eb6b93b506aa7955e80a0f62cde283c67e93ddb6abded8d2895b3ccc1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62499814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b87fc9544d0a326e1b95219b817c2e26e3650980c3c5a3ce131dda283817be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZC62499821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfd4d4ad6d0e5cb69f6ab4bb1de4572680f019c3902d895ff01099ee02d0333. 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/DEZC62499826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b982f6b3d746af3ab3511967effe56bbd4775844194773468454615e6510f71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62414664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab1abedda6a058f74a11cd8c85737d6c68e8bb3c8674d9882ec6b05f47f3fd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DEZC62458746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09890459e721591141ff71adef7b7d842f96b98be91584e64e16152bdc2a9419. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEZC62573721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca39f989cdf300a7557c8cd4f9903ab4b2d135af64d9a64441136a98e8ae802. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEZC62573722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9dd5816575458f0fda18f1829b2939c59a8ffb68c81d7f35b3bc71514b3606. 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/DEZC62573723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37359988ea048ea999bffc0507a1096efc8eabba54633b4c2dafca446ab5be9d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZC62517722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a71afbb6fc7e7a60494fba1907633f34323d2eb3d63783557e3c2a1d9b31a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZC62344485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ddb740528ea18b36848ef778120433b1cb191ded7edec42654c1d0b37735e6. 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/DEZC62344487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de6b4bc896965bc0d67417f16c0f1488482f586cbd613d2462009ca4d68e91. 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/DEZC62344492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad38ed594e0c44eb65249ced30a40a2e748aa45cbb965a1c299bf5043da16443. 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/DEZC62344493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6874b76abc61d3388ab06271464745479c7d91d7e8aae796b5aac83e574432. 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/DEZC62344496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556783a59c11b2873fc2e9fe59bc56708fba873003f58f851a65f36c13dd204d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62344497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17df5a45c257fb61edf96057393f224a57279c410a0948783f92feba884e632c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62414681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3e06e572adce69befdeb9073d3b7aab4a541309b1615cd482f02429d6fe25. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62414657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631a5a32bc9cca3730a63c7a68abcb4472e2cc3688f0e7bb94ec8419b2798141. 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/DEZC62388356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99fa18771971108478f860bb306c496ed3e7bdf6c1cad5fd68e204dfe8a26f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62388357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa067c510771128dc2921debc2094f003739d404ad6e531a36f05f1f97fb5d7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEZC62344481.
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 0x6dbd730ce3c2f1675fef115148a8e6b96e0dfce9cab3ba6cb18a3113dc61f67a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEZC62344482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2a7fbdc941861054807f49601495b6fc0fc0af28df007b40964ff23864a042. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZC62344486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13010cf39b4989d0d345ce02fa48f12a9c29633047ea3ff727addb22cf8346. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEZC62344489.