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 0x424cd387dea1265d98cbf246f67245334193aa15d63a41f290009b51db1e71dc. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94b43799-5773-4a76-a3d0-b4d629ea31e4.json and https://artists.proofprofile.net/proofs/artist/94b43799-5773-4a76-a3d0-b4d629ea31e4.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 0x39a933562130ea18073ddf0e576f0f8338a24fedba4d22c25dc04a5559b18ec1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFM2162383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152321efcecd3ab453fbd626e13ed8171566ebdc18b488ce581decdafa8482c5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFM2162386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400c33f3a310a05600964415198b2e5a9c4d291da79b8fb25c76a7e83ecd86f6. 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/TCAFM2162388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3f0fa041c8f0a977f84cc412eb4efd2c9874e05472354a06cb85ebee920a4. 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/TCAFM2162390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b3cc4a54dfde2f85e0936e126067432b2312e6e5c74a20ac6d27635bd62ea4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAFM2162382.
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 0x37702ca8ed1abeb899d5cae0e5dc7731e66e08e96f8ea34a551bf868dda68f19. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAFM2162385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53a6a495f8c1e61d0b99e5284a2f1e64485eaf47268e02ada07a70dd8f6bb5b. 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/QZFYX2119562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e41948eb299de41b1829bdc8c0652c323bceb85e336091aa93b3f1b552f641. 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/QZFYY2030498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b95df1856b4bf15d800f40fa50fc3b587b6cccd0db841637f353b60dbe6b99b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYY2030499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d1d473a2fc10b318f721ae76835ed1b14c56ef8862acc096794fa62c58dbd8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADR1872222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0df43dd7d3474ab935aed0c1a74a9fafc0689406a184fb5d030dbe9d5582b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADR1872228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8215c502d57ac7c9b34d32a4c824182dd2bc7c92d7f0a5fd552b6e8fd04f20aa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADR1872229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a871e807b1e7a30d3100104d9ac0f1d1fe8bbce08dc497dad65af383a00ec2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADF1766710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f3661e1fff61c3b6ff654cc88bffcc0f8d5be6c5ae17c089da5beb17ff56f. 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/TCADF1766701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeaaec5a2de5ea50e1971942d2ec812276ff82883d7a56469dadad3e9bebe46. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCADF1766703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0892518618b64472538f433e0bc9409aa6fad7812e77cb4ef6ac9972527abc7b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCADF1766705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cff223773855732f7aef8851271a6209478fae941a454bb3965d50724d7ebd5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN62279458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a21efb814accd91cd4cc0aacbf9c27cecb1f9aa7d797e9a100e27a77bb9fe6. 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/QZFYY2193261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e639e795c4dbcd38c6f187eab14a3eded085f62491057b19d6e2019a207e339. 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/QZNWQ2021957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de77888ead43719c0098c69e2f9e81fcf9d57945ab26f179a36455af245ca98. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFP52002190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19ee5dde2643166f4cabbd61312b15a791b0d455f86405d06b70274df4a7389. 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/TCADZ1866334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f85a00f7df40e971100f83df90cb5832b3f2d8f0fa56fd516c22f54e3f2114. 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/TCADL1884979.
Sorry (Remix) [feat. Fetty Wap & RemyBoy Monty]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3f3e0408794fc4fb31a62e6e180a3439482b5422d9dae0da08105da333258. 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/TCACR1625252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff08a9505f33d05e494bbd32a689a3a1f8e38661fe41da947a63eb792a2e691. 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/QZFZ32345284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aca705535ac487a76d94cd30c8a00dde0fd487eeef67ced93a0b59159dd30a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ32345286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d931107b3db2ef786bb6d5658d26679b083ae43ed16dee27f85418f676c5ba3. 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/QZFZ32345287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb61895292012ee1539a01370784593c0c88b514885f90d07b3b3ad160833083. 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/QZFZ32345288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbf1798ba1dd087e1c00a5de96e910619327721700da3492e601d2df4f912a0. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/QZFZ32320725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd50701e2afb1495185b74570a8858cb5eab0531e95c1473c253460bf04ac695. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZFZ32320730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778be303fdf22e3fa094f4852f20c48466213f70c699a780175cf12925200f1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZFZ32320739.