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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa6ef5eeaed575c68a78edc118b00b96b832cdaa7a80574fce200f2c6159ef7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caf4e637-4fd1-4499-8fb6-95aee9990bd6.json and https://artists.proofprofile.net/proofs/artist/caf4e637-4fd1-4499-8fb6-95aee9990bd6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0435264e0a024ce136c22136e3cee0a309664c35a22ae434695677adcd5a0cbf. 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/BRNYC0700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93aeb39c34941213bfd2ad68fe5344792b146112babb2a3ee42705799ede625. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRNYC0700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8585ea22bd5aceeb055ccc4eaf54ee9fe729faad65ea0118ea2d9003d8ffcedd. 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/BRNYC0700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b718cb07d5f526e78cd464cbebf609f7113fd69088002ad51ef108385b6977. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/BRNYC0700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50010918ec246a0839d6733eb2e009f6570fa1370486e8972f0b21868f5867ab. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:58Z), 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/BRNYC0800808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742ff95ee187ea3746ffeefd5ecc17f4dd104dad54182e35da20a3d430e1b21. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRNYC0800809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfdb4117640f40b609a02bf8061b40b69e971dbd66f1bdb89d9e89db458a120. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:50:20Z), 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/BRNYC0800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e20dd0d6bd0763f7a6701c27654edd8154dd2384a56f63ab4d9946d3505f4. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:53:47Z), 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/BRNYC0800812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5e0348459a339d2daa5c365567e3ab743f592b1220373401f65bf8a58d6da. 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/BRNYC0800814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78409ad957797a7fa5bfc7f0356ffab68547f4f122fcd4e4fd413cb11312b126. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:31:20Z), 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/BRNYC0800819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14957420b12eb64d5c69a544b357faa2fa30441829086dd5ff8efbb15cd30331. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:08Z), 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/BRNYC0900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcf40443cc92116451babfe13e52e90be66f54cdd0060ae7ad07b500c5a302. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BRNYC0900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2097192c37555b10a401e3941ad9198c23c09c2f9427b94e7a8a899f3c302283. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRNYC0900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33c41a3a16b3b3c712bea5b308abfe5ba6c416442574b98eff213c581494a6e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRNYC0900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3592e73a710a179dd16c29d1d37269f88d447aabe679d0d7c8c4a36ed0e4b83b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRNYC0900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e7ce6fa815c23f3cb289129ba6601118bd037851ff08a3e0e2cf08bea14ed. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRNYC0900431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f862d55aed3d4ab78c34033bc17695f961682cec528853bb3d86b96bb48553. 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/BRNYC1000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f59446b09ed1fb2d68114e3332e2dd9f9692f60e2785883bb7301693d7c11d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRNYC1000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b13f607bd3ae2a0d03b1b5f405826902cd7d4ccb30a30178d710a81fe93cf7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRNYC1000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a59c84682917ca9be7ef95ec1d93a4d99f0d6ed285d6efbf042a8c0547aff3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRNYC1100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b566c6714819a60a100a6ae4940967a4ca5167e257a47ff4eb3637037f8456b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:39:56Z), 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/BRNYC1100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf47dd80cbaff30ef6fbf7314b30455728c33a0b66a6120701f63f816754334. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRNYC1100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4320244af374ffe40b04fd7c0731ea62f22d40da7c0ab4350d69033f6421b35. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRNYC1100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf716c2f6a495e5c63de41a5a43bf41834803fff81fd5677fb4eeb669cb26b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRNYC1400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e187963e76018af6c5e0683ee1638366e740cb266413a5566893bb50b41d18. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRNYC1400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19944a8a598e1dd7353bbede888c12112e94643691f5a0e1052bede3e5251f6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:45Z), 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/BRNYC1400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730cd67cab52324401f08458d51535f1f839824308681982a9ca24605493998c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRNYC1600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010f84efbbed9ff77f8212e5994cb5d52a1e4a570cdf77d999c61b71748062be. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRNYC1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b17e934a3ec8898df349b6f1dc47e72e82196f9d6be977925f7f4b332b4cf. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:36Z), 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/BRNYC1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6323bdfe17e0e14d627576642d7df0ee98901735f608a03bc212458094063d26. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:30:20Z), 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/BRNYC1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e8ea2cfc04c5c7212683b17cbf0e1882c0659096baff9ea5473c1a68a35781. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/CAQOI2306464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6fe99dc24e933c3b539683acfbcdf788776d80eeb2934852706de13343f551. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAQOI2306231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433d1155106070cfc8c517e40433fb2bea41918b10980a9c9e3b3bc50756d831. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CAQOI2404667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c133c32d425b5aa20881648b75e7ce59377acee0e004db7a66370ea10268b64. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRNYC2500016.