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 0xf91bd3404a48242304a5a38bdd679b67734720cdf82cb98b319f81389f4bed07. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cf54acf-fcb6-4d5c-8537-531947588753.json and https://artists.proofprofile.net/proofs/artist/3cf54acf-fcb6-4d5c-8537-531947588753.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 0xb9ffe8baa8e23b69b7e360990ba12ac25bbd2763f9c8947866626543ec4e53cd. 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/CH6542102633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c875cce0242a3da712d533b8fbba5d29a9a9c33e3647780399c96bccf00098. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH6542102636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee2df73de5ccc0bac577c3c76209a0bc35c6dd6ce7a4e3936f820b282ab3135. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH6542102637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b33e6d2bb4c1a60feb2729cfe306bb71af5cee2a2cd9f68ac96750347130aa5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH6542102641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce7a68cc0188fcada0027304c889312a850e984386b9c258f805cf1fdf4818. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH6542159918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f0b49e9b8c47bd9a141cec99ea7453d2c0c378d570b56c331c60bb52fca5f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CH6542179101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015527dbf5c23af594b67a3d83aeede271a4de15a6fa83852b89c41f80af400f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CH6541676931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11b906ec4a9a670ee8e4e8854fe817825ac450cbcc6447eefdd5d37ea0ad911. 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/CH6542300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b61360e6ac72158eb3966b9348c1ce2d1d3b1d1e9c60cc78428b1aaaf12037c. 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/CH6542202714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eee08f98c9e6a4bc05f80a3f4a58252030c164d2d28f7ffba2e8be2a9556b3. 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/CH6542203715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6a1b8df40e884521b018b8822f0a3354f3a4c05a91760230ade888511ba7fd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6542224527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82462e46f89ad026b378d370905c9f5e104f95cb3c407ec7bb7c04a81fe4cf0. 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/CH6542233271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90d7832d83bb96f7f425e326e2e6383467323fe97febfcf4ad07d0e5c1f782. 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/CH6542266261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4e16b8766e62d94f484e7631c227c157c45aba39dd27cedede267fb131b4d8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6542275321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdb51f4d6cd9fe397478fc8a93631615e4f665dcdef4d91c26eb4c7143daccf. 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/CH6542293066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6f0225e4f66461c4b17cd9904c96fab96e1b1c4adaeaab86f980605d8baa4. 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/CH6542324908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0803111a96584357bf00054344f748b4376983a807ffd9f428fc7775e4770c45. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH6542322662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca20804fae0742cf058e76d5096dee32fb09bf32937a2a63a0cc410edf98e38. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CH6542326459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1017db95aaedf3e7fd32f3c6edfa16c0e026fb6bc5ec75ce1f20ef1be3fa83dc. 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/CH6542326460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa237b4af5f5bed8068f0b61cbfbcbc649456d20b4397b47d99ac063238593db5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH6542326462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9da26c356cf96c1ab20484ebd8fb1a1d50a3486b9948cca1b41a22fae43381. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:00Z), 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/CH6542326463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c94c7d3da9f29581ff036285c9853fc0a634627bfa5cafcbace2dbb5bce2d26. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:51Z), 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/CH6542336989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4e341c1a0c04f015b6e61d6ba0b764ffb013091b462bd1eb1be41bc181115c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CH6542340573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0d3ba1558a92b93afca95319136c77df2cd02a79b5082f124399c081944b29. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6542354145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478d3cfe7b269715ba61cad81a16787730b10408206a3aa54d85bc3bc56c5e0. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/CH6542363082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed7db630f04d7c6d7b904ec823606b25608865f4cc97b860b04239b5d2331f6. 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/TCAIB2453172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11978522eec138a9d835c0e0297991a77aa4a1997d5265c6aabf568d60f13418. 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/TCAIB2453180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e10885b0e4f5c8f65efe9d2ed82d3a87794a8d61b224948182a4bb2f3de2c04. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:38Z), 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/QZNWV2450812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e526340eb271cea6366f67fc6649b7665a4919aaa0867468dac32fd32d15fa7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAIT2410930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cc9a73ad6bfdee5c339903c52cd480f4a05e0432ac5f4177d76be4490e0dab. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CH6542484751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d497c2ef5b2df2ffe290d0e2d8fdab1e71a00fc05bc645e84f00a0ac43fff. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:09Z), 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/CH6542484755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbe9f4f866bd1c3644f8e69ea42829e100ca3378c4a7a055c178b8af62ae2e4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CH6542518385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bd715e207b941e166554102a9c35421c35c53095e01ebb45262dbc8ccfd85d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:11:05Z), 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/CH6542549192.