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 0xe6570046895c288c0bdd3002857030dce0e934c9c9d4c1fe32f79bc090730b4a. 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/9e313674-5665-4bc4-a353-43b8fd2d7b14.json and https://artists.proofprofile.net/proofs/artist/9e313674-5665-4bc4-a353-43b8fd2d7b14.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 0x86d662ce0d545c438673ae92a720eaa099eff70ee0a058aba6479d7876e5c1c5. 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/QZHN92046100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb4b7cbb18f4d166d8248a84c3886ecc7ab70b72c7d57f93007dc661dcde327. 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/QZHN42046866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0edbde54b316785fadcfb380902643fe3aa94aea2da0f22faf6a9f23366c968. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZDA72099171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d241e1ce0d021e34a166e8b2cd1679cc154143f208644735f2b9f3a55243c6. 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/QZFZ62098948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb06aa5e7141bc9371c678f7c0a4f2addaef38fa97a5ad269992cd5e73dec0. 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/QZFZ52098384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a87dbc04fe145dfdac4960e3182658f7b25000faba8ffc5793c6b0407ae287. 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/QZFZ42039760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1e45759447752769138e6a4868348844819ad841787ad7fe31ce5c76cf017. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZFZ32051786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e0082691ad7b389dd981437567168f25b2e7e0ecc57faef746b7005631122c. 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/QZFZ22075676.
A Dream Is a Wish Your Heart Makes (Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c1f4e76b686f992a372a82e2fcc2906c5d51554a961e274549863b38f48853. 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/QZFZ22012800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977cfa1639bfe672e7ede85ae0b24257a5cc26a92de284f651af7df1cbb639a. 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/QZFZ71970197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9278477be08c4540d57d782094ffe23bb97021316784dc8cb21ef6e22febfa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZFYZ1978044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0198e8eb65607a8237488d772916c76542ff8d999f3696116f1184214bc289. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZFYY1938657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e73ef131c6ea308af6dde54d59472f5eda62fa457ce1b5363c8f0649e4fe25c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZFYY1938658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105895800cf21c5deb04c5e78f347bfc98abe464aae8737234e28d692a5ba027. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFYY1938659.
You've Got a Friend in Me (Piano) [Toy Story]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6b1c596971cea736563e0c5612947689895709baa997d624f0c0d0a707bf50. 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/QZ8LD1936644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5209af8968d2db277eebe61c7a1455b55c38a70e4443b5cebda4ca9fb77dd994. 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/QZ8LD1936645.
I Wan'na Be Like You (Piano) [The Jungle Book]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00586a79ca2edd35e3dab178375a94f7b67ac0a6c8a840dc82229f99a3b4616d. 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/QZ8LD1936646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37182c4f35404d571a2e73e67c7485a1ce370c537059bcea383d5bf06b6d484. 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/QMPKX1877446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550eab957d1ebeb2cb5de6292414fe82d11df65862f043f2dba73ff2d7db3da. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QMPKX1854688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4495b404c91dba0c846e919af194a72a5453f789182e12c1bc294bf9cc7bb1. 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/QMPKX1854689.