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 0x2257bff3bb9085c608879b2221fd4778b29dc02fc980272b1dc96b255574508b. 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/2ddb8953-ed88-4b57-8a31-114a068559d9.json and https://artists.proofprofile.net/proofs/artist/2ddb8953-ed88-4b57-8a31-114a068559d9.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 0xa137925e7a0892aeb9823077a304c0cddee519e6a85b998ed613b9b39c9ccae4. 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/QZFZ71963910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d10b6341d59380bb0f92a697035213a761823ff8a92fa9935f8f6b5335888. 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/QZFZ71963911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8fbdb39fb2a32697edc1e974e106e41abd84e26dde64941ae578ec7e2a2ecc. 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/QZFZ71963912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf2d5b4c667dfbc5823b37f18d6861eeedeb1cfc676e9d8a5ec338fb3ea4359. 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/QZFZ71963913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f7206b94123a26310071aad607d3af7655750c254df5da8209c07f2128a8f. 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/QZFZ71963914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a81b1a546b25abbf6d213aae01ed74f0b9dc19d660cdfdeda3fccfc75fe400. 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/QZFZ71963915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed141e850d36a740ce96c8b2ccfc8b760ee4ece9826d74d30130f2cfab5550a. 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/QZFZ71963916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa3ac6206e07f1d39aea1607cacd6c358deca9198678b83f5e238ec809a1025. 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/QZFZ71963917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521abb47db384c8d48d266757347b35c220d03027b4ed6d9451d6b43aaf2e977. 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/QZNWX2193410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7e6a55317aeff823ac02489f64a2eea7e9b5d74357e23fa231d237b16a887. 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/QZFZ21922158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0f52da0224227f0308b0952c2bd1d969a577e9b5af66d4128658c4fa7885a. 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/QZDA72189859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a503bfe3d0cbf19527c8a8c2fa1a1827d3ee18bf034b5699d3fa37f475f98f. 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/QZNJY2484330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ac7ddecedc25d57b6b41829b25f56e0c3a3a91a9087c77e1a166ccfa69f3b1. 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/QZNJY2484332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de344ffce337b35b1c6895c15611cdfd288528a0d365648bba51c5efc336fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJY2484331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8270913d176dfd06fa6b936f41ea02c6db8fe55def0df482e5b495f4ee5b0068. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJY2484341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183dfdf141889c42ad26c520347fbe8ba939db03ccb9b448031710d1e9352045. 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/GBSMU8272220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a75c5fff472f7e00dc3d6668b6e141b6e71b30c8d468789fbd79f20c29f36d. 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/QZWFK2353005.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb307d9817aba0a41edfe00c59189983f3f8ea6bf10e09e49948565da43632ea8. 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/QZTAY2316457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d44c59caa8b4d76e826703197432ef032b6fba584f08d7f24b35237a1109918. 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/QZTAY2303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0153fa089a969fcbf1b4bc6deb0390f7f632a8084224be888c3f2ceed409fa0d. 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/QZK6N2362614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29b8e3f4ef4de7240ae0b5f26d62101328eac5f1172677d0a7886373dae314. 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/QZHN72122816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fc8a19501f59384b3fed2e27f7d79566d42f37b441bb576d3f0c8a34ea0f90. 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/FR26V2054302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0da350d6feb0fbbeac6bbaaa4c215c634bb4a2e6c0abaca1c6054662c46267. 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/QZMEQ2016918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932e78678d85623e9339e58484c750d22fb71744f50eaffb425a4f4626918c76. 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/QZHN82085167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd80d64e33b8268d27e32449d68792bb2f38eb7dde4c6ae666fdfbee8d3424db. 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/QZES92084622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0031a258fe170ab1285e2342c43b1a19cb07f5e25a8dc966ec1fbc22c2301e4. 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/QZFZ62033406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e036be5ce69f9d66ff2247e8a69530b3c35041611f0a538b25410af592deb1. 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/QZHNC1927890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893d384aa10d3ef3f88bc77a12095f32e56209f192cea7ec2bce59f55dbb2043. 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/QZHN71971197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05318655a48a14d88a856e9ffa868451a7cb4980dc905a66d7c9fe6942401433. 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/FR26V2054301.