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 0xbf9d1c98bf8cd4a42702f1a1204eb5204a3d8e7f58ea1c79d25fa5d19a4e4afc. 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/e002767a-3504-432f-8224-9cd28ca467ca.json and https://artists.proofprofile.net/proofs/artist/e002767a-3504-432f-8224-9cd28ca467ca.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 0x3e601dcf07a0965126e6ca8a14ea12910eeff24d57aab583fe893770ab8497e8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DELD71400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295d34a6176ea96611a1024b2f6bef385ccfcc7adfa7837df33751d79f6e0965. 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/DELD71400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f27621b99249dba22930f6280d305a7546d25a20b8167201fed629a498714e. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DELD71400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475af439554ccf10ae5a0942e8739d872747b869615af6052ddcf3c06c82851e. 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/DELD71801627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb1bc50c09f8682f9503c5fa860740853c97a71fc4839e23861fc32ac3b080d. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:57:57Z), 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/DELD71801629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0607b06ee33b190f30ddf66ccd0a30d26e03287ae7fc553f0191f33797ea8d0f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DELD71801630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a24492cbf133e7cfc4462fbe4b5d312af6dcdd1830893576da6fbeea59f9ba. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:59:09Z), 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/DELD71801636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7d85c48d1c95d27b2f114494051cdfe9de147517ea3e283e19a0da7974236b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITG272300967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c5541c2fc2b36263d68a47d36281210f86f37fc3f7e8f9edbccfd66e8348b. 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/ITG272300968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d5d2adc017a73065d3238e709e7487ac9d602c06f3f14438f3d6ab71044e82. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:32:39Z), 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/ITG272300969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd948d4db2c821f1419695338595b017a9628d3f78379eac44416d6d0281c43d3. 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/ITG272300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f18402841061b6cc875e0668e3a423c8df5de9372c8b0e59dffe501d67242be. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITG272300971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9fa5faabc2b7ec2f3cbd099dfa8d9f95dfdfebc42dbce32946083fd15509c1. 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/ITG272300972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38d2266a6368ebae55b9435577c4a76328bbb97735da9734adb890fede55a3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:07:33Z), 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/ITG272300974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088203ac815e6e7e7e08d69bb02abed2733fb36a4439d71c354d0e3eac91c47. 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/ITG272500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5a5e464604b789a93c0de5a2e42c20906c5d6ed52b6736932f32e202b3e318. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:50:00Z), 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/ITG272500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb74846da3ba5f28f71b9648f89984e698bfddbad0728d9b2ee4fb0b43d37d. 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/ITG272500555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb20d2c3620ea1712e751d0349a3d497c70b5e89504b444550cf560f379f74a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:38Z), 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/ITG272500556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bb49eabd024a843999b148252b798768724969c4596c5ae1a143e4541b8941. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:49:24Z), 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/ITG272500557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cd4999924d22c15ed939754e9404533f09228bf1dc7d925ed3d354b945e95a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:05:28Z), 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/ITG272500558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe538fca4dc7b53b059cd3eac24a4426a5b8d3c46459941450711055b443091. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:55:08Z), 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/ITG272500561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090fd57d2c15b5d5daa9329dc2fedf8e5b8c22646a3e4924df0e6e0479e5f8b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:32:03Z), 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/ITG272500563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088203ac815e6e7e7e08d69bb02abed2733fb36a4439d71c354d0e3eac91c47. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ITG272500564.