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 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 0xd528655be258627ab5b7394fc3ea3ff3bafb7d6bf2a337e4620dcfae91e24f8e. 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/32f69590-d691-4ebf-a852-dd643b8fcb53.json and https://artists.proofprofile.net/proofs/artist/32f69590-d691-4ebf-a852-dd643b8fcb53.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 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 0xb66961b4797dcd1d0b2a998e292cc7d50ffe44cd5bb77928e6f6e57c8c70738c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM2PV1537547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a977aaf7bdb4c629f1f37ad8780160f08e49e63de1a760b0ebb3dab05f2122. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZ4JJ1634879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ee7980f0afea9a1a2e5bcecccb2d07e3e807f53c2152c80e6b1211a8b42cbf. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZ4JJ1634885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce53a16ea4508705d05840c1dbd5d8ac9aaadebb90b39c2ec02f46a5966c35ca. 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/QZ8LD1723597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d602114fb6524e966aef3a28cade5f90140a3cb97de06839e142d4347a83467. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/CAGOO1809831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe537590f992bca8ef702e4cb9fcd263466428399de5f1fd50877a1ab60aaa7d2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZDA41823566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e736b5ba1924c64dc4f76abce596a8540f2f50fce6cfe7536654f322c88551. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDA41823576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb2c3244318afb59e180f9f8b5f0e15a4f1dda17f1c987e51bf4d715536d129. 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/QZDA81962074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d1813102fb21b35673408147d74a2e8cd3348aa6a08b31967cc00f2cde05d0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZDA81962079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9840c6594352be555aa65c34c2dd7b9e487df32fe4bb3049ab2060959b4d9f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6P1957112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a023d7987c679ccf165be53e967700799eb9615110c8e168311675fec4ca3a0. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZK6P1957113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a637fbcaadab25f48a24cafd56162cf6d1ab0052250238521745bcbdf896b6. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6P1957114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83235b3f86601924089600e78074a0e90d005817ba929ec89dfe64fc33fa9c88. 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/QZK6P1957115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431752258002d9da3f8056df9bc2e97416376711909ebcb3a3760293761c2557. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZK6P1957116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff1799e3b6a877672b42478d07a4cfb04992d0e5f63f8a2d055a77ce334f20. 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/QZK6P1957117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d09726e32bda783eafe00581236ad2327245e180358adf3bdb8b3924e8c4ecc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZK6P1957122.
Hallelujah (MLP:FiM Verses) - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba58d2d60f1c09230030d3143887d8ee87b14e7529736beea871617e9f449c9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFYW2165253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36518299556da75556ae895e3fabe8e835833ffd4c2ced9a9d3d57750c1f4014. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZFYW2165260.
Ambience (Ambient.White Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e8c60ced8430e9ada34d4ae08c922a8daa9407f93bf1f9770de8003594198a. 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/QZNWS2116840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aca2e34ba7030c41cd6f3e58843e3b6b6dd1efacf2de5cb3a9058c2d2d5eec. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZTAU2167425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da7f8fe09357eb044a7b29cbef1b128db41a47eabc0ede135f9c622b339fc9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZTAU2167427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cd86b8257393bda2ea020157a7396d5f22a08a00b1b2a5d41066157dfd03a6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTAU2167430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0254c0d4892b2ce47e64dcf664d4c49ea5e4b6c504a1d710cffc69cc3f3bf4e. 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/QZZ792445047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8dc54d0ea6208387db8403f42a30b72deed11aa6fc79a65ade953ffc4f3232. 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/QT3F22412598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323602c7c909abe014b6fd9bc14214d7b7fbd6967e2fcf945d0910ca89107a06. 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/GBSMU8869680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ff0c504819b8c5b5024cc949a80e0639877adb75d237e61ac3c3dacc13594. 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/GBSMU8869681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa340507fb8459510afadf9e75c6b04c08ea6a1779cb81520ada0dbaef9247913. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBSMU8869727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0469805c83f101d6887958a2ee16bb7d2f9ce5eec89cce585b16d29523c9c19. 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/TCAFT2188426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f813b5ae7bca3dcbe59ca40fd3b58af84f64831d0b7dd557d5db8e4c45294f. 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/TCADF1770248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a32e2cb1b77d6bea4d9a7134d9af888b1aeea20d0e77d2b99a9e9338936687. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM42K1963173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a32e2cb1b77d6bea4d9a7134d9af888b1aeea20d0e77d2b99a9e9338936687. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QM42K1963173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c7233f764faf09d12c67d451dd993ddfef2f1d89eb1ed33ec1e34c4905c41e. 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/GBSMU7976054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba1aaeb1f973c31819cdc6f5ea8fcb3501f41971a9a888c5b5e7327260e013. 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/GBSMU7976056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe36a77aa5fa90d1158cc83ea53b01922512b91d7dabf66709b6b6789bb2c1. 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/GBSMU7976104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec5343910f4dc8657efca1e412d86533d10bb62018e0e21a737503072a9f2f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBSMU7976143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f31315447e2d3b644a1dc7dabee21f54b6fe2d669fa8769d8612d88dd57597. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBSMU6107550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d15149b18f59362c344d1cd4d35783c68d9ebd0d5dc3f506506ad70e1e3b5c. 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/GBSMU6107557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9169770a6d6eb673dc763f5f869faa6e70cac417265860f33d85843a7fe12. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GX8LD2261933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ffcddfd63f2449f9ef7209af0288b82b235906919b1604dc7bb34a5d543b85. 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/GBSMU5784159.