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 0x592b16876b312cf28c2430767bddb0e43751a31c170532daab3cc88edcdaa57a. 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/48411a12-6517-4e1c-a464-ad00056bac72.json and https://artists.proofprofile.net/proofs/artist/48411a12-6517-4e1c-a464-ad00056bac72.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 0xd529fa5d9fadcfc2e4c99b4ad419dadd1f742f8bf13010ed38d1a9a73843b575. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2566461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310dc49cb98c62164af32b7b6f4a4082882d8aa448881d6b9a374ea914254116. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2566597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab68bbee32da0d1a6e2b39cf9ae18d981971393d7a718ac1e20c4758e01095c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2566582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075b71500553b4183c36fc02d4237a8d19d96f484bff6c4ba125b754711f1258. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2566593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd740119afc813cf2d0dd492fd73d22a3dbabf77b56399e66eb7318e83302e8e. 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/SE5BU2566114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6f6be1a23220d28ee7f9e875b8f2498713cc360d88dfa09d6f242a6afd95b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2566368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94e69b3336e67ec6284154856a1b34d7bb12c9472eb17187c3b7c5eec93278c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2566589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4db639129d851004f0b7129576200c7662d430b17c0825be4950f2e3ecd8ef. 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/SE5BU2566086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717823e463e0fa34a2b22e8c8aa6ac9e66343e2499b0107d194b5478093ebc36. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2566729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb34930d284fdb89da1bbcd4ba4aac455ba8a1972a78b5d37bd39da9c54982. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5BU2568518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65f5d1d1e94270c692131d0a6c9a5041f45cbf6eebdfb3f838b207a965b989. 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/SE5BU2568080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a1929c2acecf164ad20503f7cf50e2de73dd4b4235b5bc9deef6af1977689. 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/SE5BU2569564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c594c4226afebac38cf40224128a77723d62dfff503f409842481ca8a7c3e. 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/SE5BU2569771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da0780e697cb091dfe6f22f5394e840474a0bd452a3b70a420a2ecc32355f9f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2569554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51a025b954ef948324044cd74cec0621a8118e6d9c587ed7462ca5ccc9b08fc. 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/SE5BU2569769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab34683328e4ba7870ab21d654ceb6a464d5438ad8d378df1a053cee6bbe34. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5BU2569764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6538e1219ec00fafb2c0e35467a9eae4deda725978a7f063e13045dcb348cdd5. 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/SE5BU2569570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3979458d28c98775930729f0c2cd5205ee332332d5121ecfb5dfe8d24da2ef5. 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/SE5BU2568099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e425d3de26e5b084c08bd0f8c2247abc7f893a8da2ce507e1e4ff2e1c84e6. 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/SE5BU2571528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155831bf25884fd662e495cded59a1997b24c98e7d3b6a8f72b93fe5677e7017. 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/SE5BU2571424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6385b49b45fb051dbe2da9db1479f3a60aeca0d7eac90ebc3c78b776a3c879a. 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/SE5BU2571495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328f101f263b358781464d2d3a84794cf5d6948fec033b75c8911eeecdf04afe. 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/SE5BU2572940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d7db2f6e98a46b60ecaec960a9dec4f2cc275a3595597fdd3bb8641f95256d. 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/SE5BU2572976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f4e2a6e5c924276b9991b90467b841bf8ebb58c5b6a3398bb51e411df433a6. 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/SE5BU2573121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1fce2dd9879ceda256deb860cc0f7370b7daa9dfeabe470b870470baf3afe. 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/SE5BU2585635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026c4a3e91f6a5571041ae0ce5f02833fa026f0c5f1469cf6301a35ed1e727b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:43Z), 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/SE5BU2566438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7f4bb5b693c4d576f3eaec0af04f8f27d27721d5490f891fcdc15c3d7683cf. 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/SE5BU2567931.