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 0x6cffa080843aece163c5d6ffc4cff105a57c5fe68a3f4284cc423113b3181c37. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b4de15e-d7a7-402d-895a-fbe53021414d.json and https://artists.proofprofile.net/proofs/artist/1b4de15e-d7a7-402d-895a-fbe53021414d.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 0xe34624388470f974f16fda7fbba32b68524f14fe7a2d0e7e053e22511fd0d0ba. 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/AUNCC1600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c552194cd7bf86628ec8786aab1bdbf24c88d3ef6f9ce73df58733cb3383bcc. 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/AUNCC1600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bc2242292defd2d5af053dfbdddddb1890565248a87aee71b87dc5efe74489. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AUNCC1600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0425c82d641599280c982d71b9821b8548b0eb7934385e6a9f047dd016caa880. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUNCC1600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f84e281ea8c8034bcb3c13f65c82fad328c368c04afe17c6ba9112477df399. 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/AUNCC1600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed81ac2e151a63030a916fd6e80207fc3dd90aa65052c7c592c160c2db03697. 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/AUNCC1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f317347e0eb357ccb332aedb61ead78c0e95ef7d0a7595bdd748e88a8f82f4. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/AUNCC1600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5263a30ed387f4f8dbcaee54c5e9bb25dc5c93163d960b39c652a555d6374f34. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/AUNCC1600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024a044323c4809f2f3add2d08b70a7cd9317e6da527f4b9d909240199823471. 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/AUNCC1600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb7532fcd7b598c4356a90a09ff06e915669a11407e43a6986efcd022386903. 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/AUNCC1600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0538586b3a9058870779020cb06490b2cabe77145166a2472e2e8694b2cbd128. 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/AUNCC1600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c6061e34f82c14cb6aa28c8947c0ccb50332ab3ff4979029ed951087d88c55. 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/AUNCC2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9886bfac1ed7a6326e5137dc587cb6b404a08f5f68e30fa32fdd1aa1c3a48e4d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AUNCC2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcafeba37334c585ab5b27f23253609a2f890b92123e8046c1db5b68bf3192f4. 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/USHM81438739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f124f51fd2547083576452e6b554e936022ab24f40ed9f78bdaf882dc792ba. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM81341481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831d2faab2a5ff5fd580c39dcd0ac0454c84840433285745233aef7b0f51c6e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USHM81341482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967aff2790017907a87e8f5f9c139e48e864ce73b90b170bdb3ae9c6a8a44b21. 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/USHM81341483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca51c168b0ca4be07359f9fd27dc2d99467e0bf8bc58a9214df828eea5186c6d. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USHM81341484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea9eb76be235661cc79a2433d8593451443676c931fef4b705c7cd73e0373cd. 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/USHM81341485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bedfbdfd90700d8781be0d6907b92afed20354f0fd34b8d2f0ec7a5ac224b0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM81341486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a78e30ebbe9b7d280ba1a41d7c90958a280a54cd12afbb845d2d5e355a96f. 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/GBCFB1800280.
Stuck in Orbit (feat. BUOY) [Luttrell Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08d96059b7030a66fbc8a169254e562843dfcb15470dea7595d68750d545d14. 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/GBCFB1800281.
Beautiful (feat. Winona Oak) [ESKEI83 Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e64e0be8c61cae1c36f1f61e4ef4748d1f3c180e8cf585bed0acee2fecc468. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBCFB1800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70a3387c0215f39be0aef2099021d6b4888c0ab0ede183b51499538a8517e3d. 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/GBCFB1800286.
If You Only Knew (feat. Daniel Johns) [Graves Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bbcb04e58236c27a76f1180afef35dac6dc9e0b90221401253c76bd8cfb238. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBCFB1800287.