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 0x4d5fe1e0fa59b7422556f077c6b79ee4f572117728df58f5dfcf456aa86564ba. 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/ab76a64a-608c-4bb1-82a3-75565ab24641.json and https://artists.proofprofile.net/proofs/artist/ab76a64a-608c-4bb1-82a3-75565ab24641.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 0xdc82c5276970473210adc8f81308379e2eca17b19e23925d6e6e8dad9a0980c9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAEY2000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab747c4280aa2acd1764f3fe11bd25892dcc56df0d8ceb84e5cc758d08eda0d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAEY2000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b77db8ff1caac5f3c255498e962c48a9383820461a39a623425c839b6f0415. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/TCAEY2000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d34d27d6618f3f36b81129c33751dd9856f095dda3927b6b170e1f57a0a138. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAEY2000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ac8112cb2078f2d04826e6716f7229eec7e794220f64ec9fc5c8a81b1cefa. 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/TCAEY2000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43501b0128e5174d613a7d922deaeb3213574c3cc8019b8fffe1991fb1f0bb7. 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/TCAEY2000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4365901e5d70c07e2a0a35b5cd8b9f473d46ea3153a781391d61eb051c0d4d69. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAEY2000829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e7bff3205573600b94a7e5492490e3ac1b196932309759bcec7079ce73127. 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/TCAEY2000831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66f034a441020a0aa97b173c091165cff6448548bfbc4ebe0b8b8b33302cf31. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAEY2000833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf011483a46a711e47988b32b5a505cc66d06b00540454e8f9107189f1562b2f5. 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/TCAEY2000835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4774987d6b82a9cc7b958231a69cd00f1039552494cd6d43e9224cacf0c2e3e5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:11:11Z), 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/TCAFH2010696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ff5b6c6ce082886fbe0500e3fbed2e99ac68724f70ad84fe7fe75d6b42e1b3. 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/TCAFR2195584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf23715782fb72c5d971c32939fbea2a64d8badf74b023fa8ac2a520e68fa1e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAGA2264947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8ed963be883199c2e4483b15f5fef47efe0409cb0f331d8a337e29549e94a. 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/TCAGA2264961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4d6b4e8bbe513998c457b1491d8cd3576d126bfc7466e152fb093ff1cd2e9c. 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/TCAGA2264970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a8a0848652292f69739c5bcdcab12e8a4465838f5c179b507b79a7ea99eb49. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGA2264982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9ff8665a261d8c25d178691548607e374accd9cc0cc1e9acf6dc0e82cd652. 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/TCAGA2264984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee7186f9f67e6ba5b3be6b9c7da336e5450182807de1791fe11987c52188e7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:14Z), 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/TCAGL2202687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378cc0ee90d23154d2eba5d5b96320f5fbfd16c4ea14a64efcddcabc7db4909e. 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/DEAR42318391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd54659220ae6f9bed10ba5264c6cb8181db2569e472b3f5f2e99037c07b7b9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:39Z), 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/DE1JN2357906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74810550f49eab156d80dae52b2cb2c46d19c9240184e5891f45e17fd349af0a. 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/DEAR42496948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159022bd64590d7751281b1acfc65f603c3808043e7343099faa0ed1c0948990. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:27:36Z), 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/DEAR42489200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae68a59436d2661a7d6a963aec0f601267ca242a03d7b2e00e062c66de3afaa. 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/DEAR42489258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fa86853b4cddb2224d8606497f7e9bf04685c8ce4fdfdb6f3978aeb402382c. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:45Z), 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/DEAR42489510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283d7a5dfaabc4c75f9c1f99aa8104070b435bb66f721fb928131040ac9c8d5f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:47Z), 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/DEAR42490720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a97b83a15ca93cd2071db3ce451f962def04c5011a1b3127692b5dc6800e28. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAR42489194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded74c4b7688e9f691960e677ba9a3942351d87030e6452a6b53e948fc3ab948. 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/DEAR42489649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537e74ce7d713972188e263ff0d458c590b44893f90fd31e0f3c0faa724602e6. 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/DEAR42489279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa081ce3876cf5fe7a7b523a2b53ce3fceecad8f18b783a9dede08394b26583. 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/DEAR42489216.