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 0x09a9a912ed314a9ac4576a75b3201040ee2254590b5fdf0841c51df0b385704a. 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/82fda68a-3225-4d71-bbcc-aa231a5c2861.json and https://artists.proofprofile.net/proofs/artist/82fda68a-3225-4d71-bbcc-aa231a5c2861.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 0xb9f079bdc63f682b2a8ae9be76cfaa556514146b0b2365182fc871acfcbc3ebb. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USANG2213770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4dfa9cbc15c4408e2b82cc90ab44e4962025c8bbe0b4b03c0ddbfb4232290d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMANG2201281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c857455690d319add00fafc4b040785f9219ae712d797fd68fadd825aa788. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2412520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2e7cdbc028e573b137e2a0b791f8dc9c6d50f09a6c493c016e3000793872e. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USANG2412521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e47bf58e4432902a66407cee3503f69a79b7255b809d423e19309c639c419e3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USANG2412522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1681654f0718aa7289283c4c554c0caa8b49b4f891165419e8cfc1e8e9fe49eb. 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/USANG2412523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f131eac44c662e56695d9da77ff6eb02cc3cabda50812957aeef686318fd868. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USANG2412524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c71553b5430ba9ce42eb405adfc16ab2e159ff6d020384531db08525a0ae48c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2412525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eda80773ec740a9147c69083473cc6483680848eb6f2e6f5c48a0fb234155c. 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/USANG2412526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8be225b851cb57602b72c6f9e1a7a0ef0979826077a2dfbace410e1b84f6094. 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/USANG2412527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b7e1df154ad7f87248a3735421634339306d21b926c13b9291e298b106a493. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USANG2412528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1171ad4d07771e32e532d145ecd4302de8110ea515373ba59630690d2b4851c8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:06:45Z), 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/USANG2412530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c0e949b610229bbf93699ab51e21c776cfefe86831b7605035e8d7a9007a2. 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/USANG2412532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f478c29a1b0b0c60a8163eb21ab4b198f0055eee8a338269e85788db4c1ad1b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:32:35Z), 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/USANG2412533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5995580f6be58357a7520a3e7bdbcacf12b09715937a32f8de722af7a70ddcc1. 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/USANG2412748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aa6199f15abbab1d05738c19c1c286889addabe29e059c6be2a9904448f2e9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USANG2413449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732ed2ca1fc3db5808384a1c8ae5205c6226d5d5f1842c767db7c21d2f91068. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USANG2413515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef46e49085587383dcc133ca6112d7854f13522ceca964a2652dd74e4e819f5. 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/USANG2436195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361286a3d70320769d5e18828f6bd981e159f4dd952e6f6f2c4a01d19b86e8f5. 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/USANG2436198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf921d3691e04d6e1a571a9ec5920ad96523380def796d71581450bf8d24def7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USANG2436204.