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 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 0x44a5d41500eee3686c633c716793d0744d246d1818fd1927efa4738a52e1a112. 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/4c249308-e34b-480f-9b0c-34406b2c6885.json and https://artists.proofprofile.net/proofs/artist/4c249308-e34b-480f-9b0c-34406b2c6885.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strange Secrets Worth Knowing / It's a Situation
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 0x0a462184b717c712efdd276f15d1310e2fb9a6db96a9fca8e9c159814ece4532. 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/FRIDO2210197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b75cd71dd7ac457450c643b723a92f3c092f67f4c3840ee7b8e6038d523de1. 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/FRIDO2210198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82124851514abe0f2ca644e1fa97951b5b3337b60643051ca511832aab6801f9. 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/FRIDO2210199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90f64f143c3637e8193efa0ba74b10bd514043a3fbd22b48a222763a7973168. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FRIDO2210200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2e62e4554f6acb0447b50fc1f50f52b0e57db5edaef3e0a67899c12735a3d7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRIDO2210201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee36b35d8fa2b0ed13cb7901cffe78ff0f181d39cedd34aee9d98f8f66de6ada. 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/FRIDO2210202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4423e43fc8de66894bba680a4ac6331b4487e0b4f71f89948937419e631f7422. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRIDO2210203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022904060e264758182014e0bed766cba9a2d17644df1837c556bda9f5bdbe96. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/FRIDO2210204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd3f2bb4d1da484dfef455093a3e05ca209dbbf83947cb2028dbabce394567. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/FRIDO2210205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aba65a659045a505d0893f1303c86533351dc3b4af88678da16a8b8a9c3dc45. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRIDO2210206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff455eaa70758c002e05c7ec806a22620ea0a6c9c09a1e493759ffb5a1a688c0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRIDO2210207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177931ed4b298f231f566745d5c1754e63a46296a9b9b1912e02d032e08a5f9e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QT2AL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201531fbe64dffb49efaa5cca951d13c9f3dd888c38a8e42e1d8971df1c8ea0. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QT2AL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd363f997b008bdbfe51e306386903154e906fe6990dcd3382a834ca4220625ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QT2AL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5049339c72c7b0b7ce93a45dc4477de180e5c1ebf293a8c9e1d83ccc98a904. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QT2AL2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9369c5a40bdb39d75e43a2228e550b9e9180507a6f47d4d398766104e265e6. 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/QT2AL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e096025b687573b9df001c89d5748c24448208434d13563f7cccc2273c3d8e6. 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/QT2AL2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9f072d489af4421dd5ee944ee6af978f1c7c9877d87f9e17e4f7106a202e61. 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/QT2AL2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa63bacd1f3db14576cdbdf070f23893c334b644777836a9567e2964a1658c. 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/QT2AL2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d8f6de3e50bd3c057ab203b3c81bd711ed6c2b02d007febc34992354eda04a. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/QT2AL2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a10d67ccf767812e07eccbd1852b5e093803b421cbb88bd01d5065a05f231. 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/QT2AL2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53092a4306a6d947833c6701b048f340017fb4999e336f6cae21fb0fae5842. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT2AL2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f181ff641d6d57661f76dffeded298904926310bde76f76d4bdfbab7bc0e51. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QT2AL2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087e69526c29aa4c025b8bbc9d50e410a076b47232bb33dcab44f3d87f90700. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QT2AL2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5c4f2fdf2188924ebdbecf60610133a37a3681b110e293bc089d6077d0e82c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QT2AL2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8f6ea77612a7376ac0a6100a768d93624ed57f3861ebf4e362e42c205e3ab. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QT2AL2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ae9b6a229853c916f8b683db137b046ee5c5745231fdebc18d59065f90a22a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QT2AL2400048.