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 0x7f56d17f50506d7d039e6c28c0e08e95d76527fc329945b91cbf81d0ac58a3bd. 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/126fd3cf-3b00-48aa-bffa-5da6818f03bc.json and https://artists.proofprofile.net/proofs/artist/126fd3cf-3b00-48aa-bffa-5da6818f03bc.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 0x0cb5fa1ca3d525bdc8a6a3f03514a53af3b3ffe8fe46c2a50f6b7c92b51dd8d1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZTAY2241747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9ff30be0e18c7a28c6d4331a098b5379a845088f50b466c2c43fd15f02037. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:52:46Z), 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/QZTAY2245475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68154406607ef3a315cf112094967f534e4743b7d447823be002c3e1956c8900. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:25:24Z), 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/QZTAY2250595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3646103231bae87524ef56302d4f6f432faefaee3e70b9c2d5cc4ffba3d20f39. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTAY2250597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973a31a8604ba23fe90885d20e4af880dc8396beaba38a32c0058c79a25fd9a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:36Z), 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/QZTAY2241772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a252ec3d81f5058578b9a1a7b16ddf27a4884e118dda590f76a5730689e72ad. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZTB42278837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146613226b1bba5949768f82b5547cb5289dfe97912a6519dd4e3f549327e72a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:22Z), 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/QZTAY2241746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553552bec1ccff9b3f14eea0212f573c1585e1fb59cd85c92a323493ce7645ac. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:12Z), 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/QZTAY2241750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146613226b1bba5949768f82b5547cb5289dfe97912a6519dd4e3f549327e72a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTAY2241746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e45be88fbc22ceb23ab58a012b03a05ce28912ccfa57df5c9d8011d5a9345e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTAY2241745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb5fa1ca3d525bdc8a6a3f03514a53af3b3ffe8fe46c2a50f6b7c92b51dd8d1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:21:48Z), 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/QZTAY2241747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3098c45d9e15dd8c087e2c202155e63ccee9aa04be14a2b252686d0ac354fe6. 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/QZTAY2241748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4d81b184349103168912d0ae780fcf8299a83f7ce5fb5b20e9e217ff17854f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:03Z), 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/QZTAY2241749.
This is Why We Don't Take You Out No More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60d773b65c69b50e11193fa182e8cf49f7658309184d7105ab1baa1c140cec. 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/QZTAY2244695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795345f3f87f9bf8322add417400bc272a75ad1f0fdcbe9abb247778bffa27bc. 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/QZZ7U2506351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973a31a8604ba23fe90885d20e4af880dc8396beaba38a32c0058c79a25fd9a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAY2241772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9ff30be0e18c7a28c6d4331a098b5379a845088f50b466c2c43fd15f02037. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAY2245475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a252ec3d81f5058578b9a1a7b16ddf27a4884e118dda590f76a5730689e72ad. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB42278837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b474756c47dbbae293f734bcdf2429db7c31b2c18118f65e1eb2b4ef0fc781. 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/QZTAS2346831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8498ec9c71716193b15cfb1bc23f6c3213fe07af6afeb8cb8cc69a08e6bb1bce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAY2244699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d740375ecbe355776c70b99655ceb9f194e250a17ff5a4b2de80243635c6f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:29Z), 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/QZZ7U2506350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40d654ec359a3132486faa34c982e237947bd17a23057aa81588db65d953368. 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/QZTAY2244698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f93d700840235e559cf2c43dabe90e1ca156ab29de189a7d67f05078e2c265. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAY2244696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc6ab4d6e40d8c2c4330c5b9094aef746172ae9c713e2c8c69032dececbd87. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAY2244694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b127eabb5a9bf88dc27f838f79e28d8ae2a2ef725feb315f56988c60463efe4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTAY2244697.