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 0x1fad13035985eb4958f6efcb39ec2448072665011fd284e1c119d9d2589ba9df. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c59870a3-c6a5-4cfe-a6c6-7fee5e3b43fd.json and https://artists.proofprofile.net/proofs/artist/c59870a3-c6a5-4cfe-a6c6-7fee5e3b43fd.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 0x69aa2b181c39f802cbf690437aa7965b0c247c90ae2ae8da9a8594933df31a5f. 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/TWC010301200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae999daa86f04bcdc5ee3d84edf297b26925860288e5e3716d4cb1bc0ac1df4. 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/TWC010301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0578aaf54aae73d8e56fd3426cb23920652a27be09034e53f37ad7ff514ccf. 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/TWC010301260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ebd89f74188f3f512fd1c75558fc3b2a6b99670cbc016fe719e69893dba2c5. 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/TWC010301280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded804f450ff6b3589af5480ba8f3b9e0a913d8ef5580d3563882b72a2c7008b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:36:25Z), 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/TWC010900731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19128fc408bc5562a3402ba117a138619fd7d8a8f2edfb0a43a09f25e6507838. 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/TWC011000961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaeef85f3da39d82a23642897fee0f90365a3202fc83d4ef21b6c9b72af61c4. 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/TWC011000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af7f910d57a042b4da340bf99e787e74263e5640554b8f7b71ad0dd9bbf5ea. 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/TWC011000981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344f3cee8bc3b938671fd08c29cda272f5d1c3df77fc5985389e93082c80a5e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWC011000991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fab2e24e49275fc4dcda3ab174f9068140ce5afdcd1dd7e7f9875603326eb6. 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/TWC011001011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9effec15dba007085d9033760b7b76b9d105c5febe5e66081eda47584ef75aa. 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/TWC011001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4b3075ed44a8738d99a9632b6827ef8d24f023410205a282a3ee2e3facdd3d. 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/TWC011001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d55b4b97bffaa833024ff36a1c51be609e028ba0ae6b3ad70b4a795979cdbe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWC011001041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d57eda9bd108bc04ed57fe55c46a705bb35033fbcecb427abe7fdc129e2bc14. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWC011001051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a2c35265409fb8be1cd3ce44e5d8d6dde654d9642a7c49b2fc4536ad869906. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TWC011700331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af7f910d57a042b4da340bf99e787e74263e5640554b8f7b71ad0dd9bbf5ea. 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/TWC011000981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945983ca4556aec9684bef9f63e5e3332b358f77e26b111c0e7d701e48e0f50c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TWC010301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e354da410e3c4cce8ea483e4a01e40936277f9c4c38804aacefdaec1020f6. 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/TWC012313371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221470add4908f164374d01cb2120ccbd10341505e817231c817ac6fca2d6f52. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWC012313391.
Vacation Music: Light Jazz Rhythm Played by Guitar, Flute and Drum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9effec15dba007085d9033760b7b76b9d105c5febe5e66081eda47584ef75aa. 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/TWC011001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaeef85f3da39d82a23642897fee0f90365a3202fc83d4ef21b6c9b72af61c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:30:34Z), 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/TWC011000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e24de0cdae6944a8aad5e77b71cacc6fb6cc205c539952d504083f537f80f. 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/TW2130500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55a5c5814d7e32250775a7c1297a4c210ae660c49ad77e127e6b0626b45a38b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:27:44Z), 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/TW2130400071.