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 0x02ebb4d20e821fc6283c3b043580a15c96ccf9cf9ce2b2dd050e7472400a42af. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1837f613-bda3-471f-8fd3-43baa43c1264.json and https://artists.proofprofile.net/proofs/artist/1837f613-bda3-471f-8fd3-43baa43c1264.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 0x45a1e9052e29c70d4dae93a2a83b2ebd3898e3c033439309c40141631b31817e. 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/JPWP01900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab0e64d04e78434cbe8b889bf562e45c7b1cd8c335890a86256e5437756eb7e. 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/JPWP01900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409147ce2417ab3c7a359912ae2877b01ca87c4d9f1149b322c2bd916f11835. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/JPWP01900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648d2500b7c7a4c94d3ae0ee7d594da2d17b0c4644970a735ce45caf7c76dd8. 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/JPWP01900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e899448d56c6880992692fcd08eed6de42f44ddf936f8e245d9dec95e62e50d. 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/JPWP01900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d194022ec3086839ef7644da2002f2f30305c644494bbc14640e86b2069f19a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPWP01900219.
Cosmic Coco, Singing for a Billion Imu's Hearty Pi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e934e2f2608975a9e62ab5432faf436f1049d7e039dc5c36f6add882f56cc1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USA4D1169001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a228f2b57d0e8d65cf61bf95980cd0f85f1c1679d33309c1a7046007fcea4e5. 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/USA4D1169002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d2366518d07a48f404e3decf4b4bafc50cd806582605601408054eff1c313. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USA4D1169003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb91a6e665ddafba1b7662b26b289a02527b842e55b649631bc3b512b91d398f. 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/USA4D1169004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f744bf178e358c8ccf4b9ad9dc6e030a5ec882a918fe6f195496d2515a2aa. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA4D1169008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdeb9de9c811946a723dd4f88d31ce0e525061a65f3a2e0bd6c943a7a4d2c7d. 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/USL4Q0767380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a66df463e6750959343ef14eea1fe62480dd1cf18e94a9a45641f492dd8025c. 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/USL4Q0767381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09fbe8777f59ab2870b164b520e39aa94c66a7577e6bf204ab208672289cf4f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USL4Q0767383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bb5887ad91b6c61d74c6575996e6ff82d53d9a0b72da2076e72aeb305314b7. 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/JPS801837802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906287ffff6802fc258af56970eebdb3709d1f6730ab7ab1f9e9951880e66080. 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/JPS801837803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd22f41295ebaaf23833490f443bcef923d0bee5c7c564864bc0db5101bc13. 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/JPS801837804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c911f4d5d13ecb249d294a68deb428016704c01935f6cb61de3d59da4f0bc9. 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/JPS801837805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda9ee7e6cd4ad0c47aae2232f551efc1da583d71c3b1019af7014185188e9f. 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/JPS801837806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed68c268d175dda8a1e60f8975507625b7f3740f7f88f30f3af08b9384b8448. 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/JPS801837807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92acdc782297c80ea5e4e6c7386cbfad7d495a9e7140daf0a7f578325bc9332d. 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/JPS801837808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce142b289a487b45ff7a7bd4b076cae113306069854abd7fb0c022352b8401b5. 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/JPS801837809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5292a0bb974327601e8a72197e04eb9664c7ecccd43d8d5ef219ca2fe35769. 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/JPS801837810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b21e105eb4a542f329b8e1256b293c7f97f30cbc6dfe0746a61ae7278375958. 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/JPS801837811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3dae2630c15327aa7a2cc0123419f1ed8792dfb96b8848d031d44e9db25656. 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/JPS801837812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50bba2f3413471d13128d949c461baba323929e731d3b7c669e0330cf49ba41. 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/JPS801837813.
"H" Friend - Free Disco Permanent Midnight Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92f85f31fcb29efc395f7fbe77240842be62fd3d4eb30708484029b6ca2e3e5. 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/FRU451500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52577466e40f3f16f49a882cd3b19f4d1fd5cf57af9a27dd42b80450a2855b4. 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/FRU451500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92f85f31fcb29efc395f7fbe77240842be62fd3d4eb30708484029b6ca2e3e5. 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/FRU451500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7185d500450974c99cef3d3675d1f7e6193dd190f6cbccd8987784cecb7fcb73. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JP92A2316706.