In philosophy, the self is an individual's own being, knowledge, and values, and the relationship between these attributes. The first-person perspective distinguishes selfhood from personal identity
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 0x96f2f31e16a32c7fd41f928a7a776ef432a7381c5fe7a0cc076e0915674a5724. 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/4a7bca1f-692e-4d29-9dad-bf8c53ceadf2.json and https://artists.proofprofile.net/proofs/artist/4a7bca1f-692e-4d29-9dad-bf8c53ceadf2.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 0xae7b79dd50b25b37695c0a6a0f7e1dc6b61364e208169e3d0416010954ce3710. 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/USFP71442003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69abce067500184457a8b28cac5474464f21c0557f1f10d0a025e4983647b3a4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USFP71442005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cce4f3d740289aea462bbcb918f2e1202ab7f5e81e8169e8787d00f4fa391db. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USFP71442006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f915fb06345fb13a40a16054388587cb9fce4f578e25c0317caf5dce63dba2. 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/USFP71442008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7020fcbcbfbf7f5f1fa19987472914e3d71f01a97a4686a17448b7d0522858. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USFP71442009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca76c07c01bec83172b60ff05fea3d2bb9777f31f7e5d144f62e73368fede05. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USFP71442010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4843cfe8e625657bb3d69d80629b8805b64f12a482fc2f18d082cea4f49639da. 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/USFP71442011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9117b3f7b671fcf7f92cb37200c82fbdeb4f4d1f2055a37185132df60fd4b3f3. 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/USFP71442012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cc474644cf44716239090b63cb00d59a78420bcfd1268bbe1af6f53cd38df. 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/USTCC1049446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4b00be1baaac38559f55b9eb77ec436ad8688660bcd9e460a47c681522f8d8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USTCC1049447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661e55c9aa2d9fa15c8ac207eab30b8b7974712e385840dfac3482c28a7546f2. 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/USTCC1049449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28f65464e1fd15dcad81a8d3454691d73b68073e5c60cf47eaa7651df16bb63. 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/USTCC1049453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af27e5dc37d7aa21cda9325a302b6da7767900a1a58e504272ad7cbb0848cb. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USTCC1049458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46535294069e0ee32db5369a1a1493f326d1dc09978df8c7a67ca2796cc78a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USTCC1049459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b8e7949d9e2825e947b1a6e313e7d54b3802650f8f3bcbe0351bcffd04dad1. 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/USTCC1049461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314ca47f749c6226f2f5c91a2dc229596a7d03b0d646dcb76044619286d1ddd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USTCC1049565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce98a98f563e69a4a5605af422836d2d2c6412d19d21b66bd6e21b8424b6b6c. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USTCC1049463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461fca8f13762672021c6e74d680ec43df8a0369f51aeacc79df29ee7547ef88. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:05Z), 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/USDW19910901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680f68522a7d0051ffbd66642ea1e2d6ab553dea7bb1857aad4b55ef4b9d4350. 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/USDW19910902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4183f26d17cd2631939c405d63cc3f82ceac518a8aedec7ef2c1138a62a77d. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/USDW19910904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2e574e50621ef9969e7b8791fb741fd6d7d14bdf188a1743d3aa1e3ae64ad. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USDW19910907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc837be94fa90aa86621d5bb0f0a854ea68d2e91429f70d4ca4d9b52d2ffa71b3. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/USDW19910908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af80c310a09aa85d02c6039ae88fac9ff4ce4940b9d33f2a3660419437d7b12. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDW19910909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c941f68c466a9bf4652136b0b74eaceb5a94f0dcb5c17f965ffbec9f2779c6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USDW19910910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfc4a28d580392fa543e7bcc5308baafcfdc21eacb7648da62d2f90ba69717b. 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/USDW19910911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee011cfae5da9055514af7243a56179012f761a5b98f0e1798b87401a1f978a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:48:39Z), 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/USTCC0935327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a46a862e59cfdbf1e5b7c5e276e281490be6f14ceeb097b9b788fbcda90a04. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:24Z), 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/QMJ6F1401902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2dacbefd0d07ed5caa317485e7355554f33b81b874b4167d45df568a757bcb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMJ6F1401903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8c7129660557aee687ae7721bd93926a8300891982f1bf0d969e34792b2df4. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QMJ6F1401905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc502387b17bc46947e9a4e5ecfdfcd3b3018e3c154bee35e53dfb53e417af130. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMJ6F1401906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d4690315fff318826a99fe3de96388c379ddeb009c88a8e254d99419285666. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QMJ6F1503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86bbb270e36b93d3099c72fe9409b8cdd6029237ac40b7547b7d72b1e46812. 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/QMJ6F1503202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c873a9185d8585aa3ca1120614108921ce2ce216b8c047b9ffadb7e6158c78. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT21100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929c2d191fd53adcba82ef53a8e7f18ddd06eda8a81308d0c6827ae9462711cb. 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/USA370668991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff82e39c74f9f2463890cd9b45bd1beada607d30ae01f2e7a39c10d0d08563e. 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/USDW10110182.