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 0x34f0aeb8ec464aa1a5d16f393b1b692d8de056de3ccd66a344203d43dddcd901. 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/82394418-e3ef-4b24-a947-397730e9257b.json and https://artists.proofprofile.net/proofs/artist/82394418-e3ef-4b24-a947-397730e9257b.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 0x6acf226e1633d215a880f3004bd7aa54900b44aedc32deebc6985f43abd1121f. 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/TWA450993805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d623cc14492ec2776b0a126293cd2bd04fbd2d42c8edd94af221858d008fd. 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/TWB879804810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1e014c8c421cfa2302344b9df8f0d9ed428e6b26247e81dfd7eac63d1f795e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWA450586301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d404e7f3609f731973d65cfefcb504ddb24253efd41e603d414f35e36987c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWA450377602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae857117dc7a9d4d140d8abec3a2a3626a13ddfc8085a1e866e2d57c53dd88. 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/TWA459024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1b3584a3f7af049cd54327806bc981a3a6c9acb3fe39b86d6cb1f6dd830148. 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/TWA451097701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c438599c7686b64d75eea448f1333e8708c490a68158379c74ad87801c86c4. 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/TWA451097702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd1ea8a138a1ce281c26a15af45c4b32098ae183ba1a5e6abaf75c989e1e44. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWA451097703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1191f600ab090217dffdb4ecb1747a4d36a31e1ab6c286fddd490e29d413ac9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA451097704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275e885b4418132b6b0c7330af5df4c97b72455e526d5a4ebb4d6af250c58e98. 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/TWA451097705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9319e2079552ac26e99773b44f7ed68f8320c1f1ee080b0b763fb629230b1af9. 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/TWA451097706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26918564b3834c103751cd0a04845a68a55d838f40a33702348dfe1da5fe1001. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TWA450993801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c71d57509763612783a36d881e8cf1d68134cc0b45d975ab2bfc89e42e9f27. 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/TWA450993802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b397297b933d7e339ae5e0386f7af6af8c51c0838caae73ee4d03495af84f. 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/TWA450993803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a867f2cfc2b9751797962995dc90caf7ee1db8b6eec2f4662ff8f72c8c8f36. 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/TWA450993804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acf226e1633d215a880f3004bd7aa54900b44aedc32deebc6985f43abd1121f. 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/TWA450993805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd89ac2c66565b47029de69f28eeeb789356e370f7a3aa95ca25b891c5c18bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWA450993806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb68e0c9ef3f85b81da8ef609148c1b265c0bbc072d36cb20788be08879952. 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/SGA038800177.