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 0xa80626d046ba1c03d807ac5258d69bbe7873a816bbb6a81446ce4b60f6dd4c65. 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/ab18eb58-4879-4380-af59-075b5718f540.json and https://artists.proofprofile.net/proofs/artist/ab18eb58-4879-4380-af59-075b5718f540.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 0x64625febb1d0fbdb5b4e90555ad0af8dbe0daac5d8e56dc2025e8480ad7c8342. 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/SEWKB1846001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0047b13c4b0d7284a372198b6fcc13b353a237b2d28cbd89551ca5ace43ac8a9. 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/SEWKB1902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869c983eca299d4dbc7578b56579ad37702deaf91bdf167edbb5dce0009e8eeb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SEWKB1903002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525048fd0a795d6eda67e8ba7b52bc33d5cb708acdc9dae9f20abda9299eb004. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SEWKB1910004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad6b35f376c77f8899f0907c0055157e0d5a7717bec379405afdd946b82ea5d. 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/SEWKB1910006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc57843e32aab106772db41b8f74aa98f56ee64d811e50d7029fa1dbba061b3a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SEWKB1916008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb178885c27605b92d7790649d37a2c13d9da453776ba467b952ae4674a3031c5. 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/SEWKB2020002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea06a79386cd116e8277ec7dfa723301387f97636d94b97e891ca99bccb6a6f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SEWKB2001003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1a350dee1833feef98c8e87dd348cb805b514fdf6b520cf5a08763c0f0f8f6. 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/SEWKB2001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc35e9b2790fb085ba3904b0f9f3f637afbdb1b3e7fb1892ad361ce2367908. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/SEWKB2001008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7a98d10b0d4bff7dd75b4b65f3f145fadac5e0f825c8f39a246a2e60dbdfab. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/SEWKB2001010.
The Ocean's Depth (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Ladybug (William Ogmundson Piano version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cfc2c3d57fd525adc902887ae17cf64dc537e784c36448730e0b965755f272. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SEWKB2012007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d2da7bd0d07d92c5c7b1249a3f37e2b5383d86906f412ba833e5c46e555cb2. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/CAN112100189.
Trust Yourself (The Noam Chomsky Music Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73fa32f3031179c87f37fc08e61053c80ca7024e518c5059431452357a128a4. 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/CAN112100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897092b068582561f8eb36d4922edc0ee3253ee981710f5b99fb68a9da12edf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CAN112100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa824f1442a895a6f26a0a571f01f33f7538e18c093a174a3fffe95311a18384d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAN112100921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e8f9a3c8fd24a1d3787e9fb018bb283077b8ef712e0b352a43da454172e7c0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CAN112100972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562133ff9c9c770d31ba2711467bd030b61bb822d37b66cb12e7fc25dfc8114c. 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/CAN112200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba477827f2c4f1e4b463da52d49f941fe88d9133bfa5793bbb92b2a66b84a724. 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/CAN112200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d01fa25f0c787cb9f0d6bdca1d03a23f50639d56025ec9faaf7e008ea6ae21. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CAN112200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92e589c92b5624da19b59e871f7ee0bf6adf357e6a8d7272361b89a91c577a. 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/CAN112200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f5ab2c6928f16ab1a0ed06f77597d5704bd0da640e387785358b390fc8293. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CAN112200272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92e589c92b5624da19b59e871f7ee0bf6adf357e6a8d7272361b89a91c577a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAN112200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4181c0ae5c001b3f95568dd72b48db5e8eb713e054effd08a911aa683779d967. 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/CAN112201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de733e7357af91e16dcee42a057ff64b775d78067e05bdb5b2fa1b364fad62e. 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/CAN112300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b10acefe39c5a7f331d04ab20cd871d8991052399a6f244caaa47712c4e839. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/CAN112301158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e651fccec278283e147281c123b42652383d5079c72c1aff2b99e58b4853987. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEWKB2407001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c5722b6a26dc61ec929dfa8e9c2ae380698b6b69ed49cad411deb2db4cecd1. 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/SEWKB2408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1f1171dec94ab54942ecee8c8472552cec3526280d590d2c6ff9876b0a144f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEWKB2441001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18cb3e25c040a20d05373dc515ca927f3806d2db65b9c6d2dfc36649bebd111. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SEWKB2511002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7d41e22f2292550b609efcd5d4ecd2faaebc738a0d21efb303248116ac5261. 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/CAN112100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8b326e254a9afdda824458329bf3cc8280d3e6378524f0fb4c9b0f658ddb93. 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/CAN112100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcf40bb37c4c4375b5a35453280e5ef3d2a07c7ee626b2452052774330b1c48. 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/CAN112300713.