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 0x8a2d3908de8bdc7bc144e4a364f54ed6bfab2c307a2fe466da2188410fc0ec58. 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/0e3fcec5-e219-4fd5-bcc6-4af0ef4ce418.json and https://artists.proofprofile.net/proofs/artist/0e3fcec5-e219-4fd5-bcc6-4af0ef4ce418.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 0xace0dfc3c06bde62e5c6f610af8d6d42e84313793d17ecd7855ee04fa588d892. 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/ES8401300643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc42900a822f8bc89cc923f96b4fea01eaa1577444c07e605ca987311029676. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES8401300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125bfed264d36c2d1c896fc9046ff263ba50d2653825558e6de41db5e299d7ed. 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/FR2PY1101130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f555a0372dab814b0500010c75548cee3a605927c2d2179a7bccde4c751c31. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLAM41200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233a1652e161700d626b7a0009729a5b96f551e449fee7898d12f798c3566634. 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/AUQT11100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9689dc122d0576361949574b42d387ccf9bdf9fc55a0d947ea4098e069892b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES8401302168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc360c1a22fc560434ffcfe133886fca991334f0495ef17533b6c5225c447cdbe. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ES8401302170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e478c449afe12edf2795322c3f3c97897acb643bdd70108c127c703d962700d. 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/ES8401302171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c45e4b5ae9ef003d8a26d9134a00895310bf20f87c5c39bd8cdb139bc0ef81. 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/ES8401302172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04acdd3f8375c3d1622322d79609ff4e5ae60970501ee6f9373751de721bfb39. 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/ES8401302174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb14d4ae11efa9ef59ab46f2e096383af54fe2f2963a2ffaa9d3a0e48d26b15. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES8401302175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6912563df84fcb4afdd8fad8f758af5d29c48c720e52022c6c43fe9eaf67e5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES8401302178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd30ae9e8200601163729aab3e91abcfda60d2d0419b8cafa51b639987927681. 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/ES8401302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd535beaa7d25ae3b316ff985178156fe2579ca677203bffbbf40f07e1e28209. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ES8401302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e935c69d6b87ed3b09efbd109f530743bceaacbd3f59ebafcf1be7fa010eb. 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/ES8401302767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fba71a80bb73825c2df4ebd6c9c151ea28cb2d9ba439a72b60d06e12764baa. 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/ES8401302776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793215fdb4ea75861eb13d9e4e59b3b53a6277d78e644fa037368774b8694dc. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GRUM71100833.
Mega Summer Beats (Special Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e95a77f33cf4a8717802d7242e3037e25b56d0ac1edfbf35bf97c97a8604739. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/AUQT11100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37aedd6fb4c157f0f60947bc5a361edfccf1e25bce772a1c5fe4798b44fc1b1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GRCB11400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f2aa337aa3e840337c9a29c9a63b3f3be359a90a94242816b37fdd43279aaa. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USLZJ1135686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af081a4c529ea2c61bf87b9aefb40c02de724651fa7532f9ae1f7f9c8fa7781. 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/NLAM41200117.