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 0x980385af8647cb78484db1dfe7eb636b8e2762308bcd4eaace92a8f5a9d22e17. 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/c23b0f00-a5b3-48be-974e-1629a1b509b5.json and https://artists.proofprofile.net/proofs/artist/c23b0f00-a5b3-48be-974e-1629a1b509b5.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 0x046527a44ced0c0b3ec875e7f066b29c28326506713b113c71a84c7ed5c343fb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM92212578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a54a3603d7d99743f076e0cfe92f96c201888e520f9360f7ee0a69323ddae4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM92212579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23886a90ad943da847062578953424242e6736b5845f20420e0a9e1636111ba. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:28:30Z), 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/USHM92212580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f839841f21389551f0773de57619da23c2b1e1269b0bb4854845abc2ac6d509. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM92212581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c37e8d9c2467d295370d17415b6d0b9ea4e20da88ee2b5babc69c53edabce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM92212582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cac58385d8e1ae4e5f7db1743cb2587bbb44b2d104398d4a6b5c710462c6b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USHM92212585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf7fa887a2f908bf035e436500778b38af9b11f0456d956a07303ba81d2dc31. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USHM92212586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2abf3b3c3169b47d6590eb7b017e6329fd6016a9217c4d4cf9b8a4d5cef85b9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:49Z), 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/USHM92212587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09152232abed889e7366a46b2293f29cedc05aa2c9c0742400a85f1312c40aa0. 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/USCGJ2390470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc2756210ec2acc1770fc38e30e28491c1d3b913260e7a4a4a6af40c858c268. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:00Z), 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/USCGJ2390472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51a7f21960bb88bb9a2a34c01ab73c5f99ba97eb602f3022c6e8d91381a1830. 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/USCGJ2390469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd51a51543d029900f2810b83898c1633231e98658641ac255a2451504d9fe86. 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/USCGJ2390468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe848ceb41f844670c6b802243e6c79abe90b723029be9aaa9be796155c8d3bde. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:54Z), 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/USCGJ2390474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f48b8710ffdfe9c02024ec2bfee4f676c49a0a7f17867d3a4dbf5afe3a436cf. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USCGJ2390471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cff5eaaefcbaf66737e71cfafa32b0078a273139492b6b8a132294c6ee4974. 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/USY282307893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76129885fb6c9056305860601ff0a1662640c1b8ffec1f1de6f440d242fe639a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:51:01Z), 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/USY282307894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76aa911dd46b44a2ac3d14608a63f4c8696a7ce9bed3bc4a026ba6c26382050. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:33Z), 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/USY282307895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b6c237668fa9e06af9128eb2c117f292d073bec0d083819e4d273e3a32080. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USY282307897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0cbc574e8613eaad666f696a8ff350ab84f41e018fe57bb6491eb1fbc1e15b. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USDY42443978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193899a6b577453a86452c95562ff3d453532e68973a46c4651af09a71493e51. 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/USDY42443979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb094527846564b8a274b5a018067f6bae4286151d81061c2e8372afa030fceca. 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/USDY42443980.