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 0x4c83ab14982262c37d847fddaceb7bac2b60af07b3d509a78835e10dd305e42e. 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/3a3fbd99-2650-4ed6-af49-74f0a1a25d2b.json and https://artists.proofprofile.net/proofs/artist/3a3fbd99-2650-4ed6-af49-74f0a1a25d2b.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 0x75693bfea3cd624e4567856c9a79b57e6282f5b63c32cadb72562b9f6195121d. 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/USA2P2440959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4526aed0887ad47793fcdd5582519c8a98d6bc57edf1e6b36880463010c575. 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/USA2P2440961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf148c1c90ad6e95659c17af9f0cb4dbe789c6fa0c05723d1ec87ed063e00df. 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/USA2P2440960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15dc8a3156fdbe023ef72b5f2693b171f52e57e311671a46b444876455d7b6d. 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/USA2P2440962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10572f73de9142f786d0cee3b3bc3d2cacd2c2c0ed52bb29ec55bcd7405746. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2440963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7a7d8527ff09c5db7c927ba61f964b09ed4b4cecfb585fd0a109f4648bc89. 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/USA2P2435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6c44a460da322692af3ca019b04a4d86472ad1640f39ae715efc433bfc855. 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/USA2P2435112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fd199812d29e0d161af57203d6db2bb002d8d2c5d445e9df023619f2b896da. 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/USA2P2435111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0cdb9f04a9ee2f55e1d62d25bb6718c4af6be7b151569ef850082268cdb00c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2435114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d48cba3341636c71cc60110682fa6ebaee743be086235efe067053909380eac. 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/USA2P2435113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e35529732edd83516033394a66273d2b323725e9aa9393fd86edf15b559a563. 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/USA2P2430062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35933d13e7e2878bebc240136f1082c2c5b594ad4b6dc4c332ed72ba96887be. 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/USA2P2421618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce23d6b652f907f09008ff763e15db289801b0f3d73481988bce73021687cb18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2430063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b3f61ed570715481d5f92a98656c39931d88ab77396077120c183f9df59afa. 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/USA2P2430064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7effa0985af08e9d9d1906ce2973455fa9e7b0de6bd8f5ac4e240975dcc71295. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2427356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35933d13e7e2878bebc240136f1082c2c5b594ad4b6dc4c332ed72ba96887be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2421618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594b364d83a40425e0fd83d7423e837e04cf8235ae22e1f609256b707274f31f. 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/USA2P2421619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad851826b5e5ac89bbbb32701db0d3cd3f0cb9c07417a2fdeaab9bf0d617742. 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/USA2P2421620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87477b0142a754f2b29e71e5a4e082e774c65779ed3176af5693636f01789f1c. 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/USA2P2421621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1990d180cac93ceef7d6459434d5edfc432739e9f5b564216f5a1a61477de20. 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/USA2P2421622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb604432de8d91c8f216c48656483dd52fc6a8f25670c87af2be7ba39c98c9bb0. 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/USA2P2421623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87edd9c0111c446aeea82c0cb31adf85ea9d4836cf980d9acdc5f3302ea9842b. 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/USA2P2421624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c102749a6b28fa2f58270b509787d8a5acf2bf2b0e7e5f3f7e42e5dc06b23e. 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/USA2P2425493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0cf61363f3a723284824b3e15dcd5e9c4967b0f2b4088d645a5fad376ffd33. 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/USA2P2427355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7effa0985af08e9d9d1906ce2973455fa9e7b0de6bd8f5ac4e240975dcc71295. 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/USA2P2427356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7effa0985af08e9d9d1906ce2973455fa9e7b0de6bd8f5ac4e240975dcc71295. 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/USA2P2427356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc5af8b6421cb38b6e8dfe9c8f67d5e3650cf24c8213ad1da8c0c1bd8d74ba1. 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/USA2P2443060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9abf1ce58a7bea4354d7200ea0747eacd8da83e598d11cb158f13c4ee6bf3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2443062.