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 0x2e2be4ad8d456685901352850ed094d3bad76a817cea0ee4af81bc50bfe343fa. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c762b91-d4ee-4c76-b31a-295d509e1c92.json and https://artists.proofprofile.net/proofs/artist/0c762b91-d4ee-4c76-b31a-295d509e1c92.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 0xe952cd4f41edca2b5db29f31876c87fd5a268bdc417bbbcc5692f0f69099f98e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAN110500747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2660b4711e79a2e8111667feef1c61d1855d56a4f3698e63a375b22303fb9be7. 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/CAN110500749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b952aa49ca5697480660fdf4a9a5823c3c18e47c0df110fe90ce25dc8a6dab2. 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/CAN110500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0404095a4bb28ae19915baad339d557190687bc4c25b7949a4b117353cbb6d55. 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/CAN110500751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab28f483cb446a5e21ee28a919db571fc2411bf8b58c03efedd6e142a9d76a84. 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/CAN110500753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804b44d4296ef4272683f9e2f0790fc228e7250b9d9cec104efcb5fe9b017e35. 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/CAN110500755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0c15a21682d2464ac89e785f10d3276d01a2992243500056b015ca259cabf8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAN110500756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79dc0b10c22404c5149b152c45467d5c1f8a08f4f1c945f89e021f6fcfe778c. 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/CAN110500757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98acdc413c561e64dcdc3bb6e526572fde41cb0a790fac85a963f467c8625fbc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CAN110500748.
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 0x035ac24943d4f6772c6eb506f671f468468c4f568580c80c8f8fd3293c902446. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/CAN110500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee04aa522b6743c78a22ff8e97df3d941dd57679619c491e0cf50ae405a9f79. 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/CAN110500754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13189def92727eea039450643ec51455161809cea17110441a496d459b19dd03. 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/CAN110501011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498fdff47476cc34f86d27a441d0bba13e30f29b68267bfd63c534232adcf125. 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/CAN110501012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830ceb0cebb3e53dd37b0f68ef93b745b798d9c4bfeaacd539572f7555454e28. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CAN110501014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90064bcd5a3b8cb9d534fa4a93e3546e2e5c29beb93bb823658bc2aa5fe43039. 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/CAN110501015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4c129be271c1b4a69929b1c334123df6608f096649a93641d777342431c921. 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/CAN110501016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a5f8fdb5c3a00959deaf12560aa053f015bb610e6940cf9526ad171c483ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAN110501018.
Armed Forces - Bombing Mix / March Forward
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297436c503427ab90c324e49f4ba8d9cdb396cc3444e729e6ceed08293dfa92d. 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/CAN110501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4f704598c2e39a5257254f13665fad40ca28c5e8ca41c3897de949a7486fb2. 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/CAN110501021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717c1bd931ebc62eb2e87d39a8183a8ac9662db88301452df05ea71e2f87d208. 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/CAN110501022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d70c379c0167e51556bb686f200e9a3569c8f2a68bbd27a4b12f836646188. 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/CAN110501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a5e00726c93e77a135aa24339ae24cf07928751da5caab43bba2469ce0cf0. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/CAN110501017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c945250a8e10998e06695102660bb7b30dad9e4a42d71316e96d7f33dcf76. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/CAN110501019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93bd0c48dbd422a15f1f4f2e011afb5e4d5dabca78861127803891f7502bbb. 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/CAN119600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed83a8a25e0ad1d2aff6283189864f732364a2e93d32759b761bfb96027e140. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAN119800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d4948ffa70e951a542d7dc39d70de4bc2e02c284e2f3f7d2fa48c46c3bc71. 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/CAN119600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeba464662a4a2b0063c1e767dbd7eaa80d8f10869ac21691b25a777cbfc4bf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAN119600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38100e9fa826668df1a74cf3c68b74018833ed60b8f2d847dd7752397a5bbed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAN119600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a7bcbf41d1de633eddd0d9fddb6f093abbcc77265547f492a4f7a008f1666a. 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/CAN110300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9a7aa984edc6085ead595dc7b381776c8254012c82454f423587ac6abf3e79. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAN119600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f41911e934caf665bacbdf00242595d465853ebd5e9dffff376f264fd708e2c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAN119600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e03dd9e07783486ac0ea116e1340ca9b978513efdc6e9a508f70d4c09a5e08. 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/CAN119600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374bb64f963002221a3953020e3f74e0218df99a1399c9e6762d34f8474da90. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAN119600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc370b3bbef67765482e0f0626e5a9370fc5d9fcdd88e90ee7ea14d5f64770b78. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAN110100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261bf850c0e9fdf84dc2ca0319ff69c53afcb94015550d29829454745b370a8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/CAN119600041.
Trauma - Damage Control vs Markus App Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667763b967b9bdd390733198cacc1151fb24baf4ab1c4d9e9ffec31991b50f6. 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/AUNTK2000005.