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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64cde30ef3dea56fc97d32a6824737806a64f66555e3127626256201378bfd. 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/7fc36944-4b61-4cd6-b738-19d1f96922c1.json and https://artists.proofprofile.net/proofs/artist/7fc36944-4b61-4cd6-b738-19d1f96922c1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3027efa8c1588162680bec8c8919e47ac99e76608e98d791b1c46219d2e829a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZDA81907475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e524ed68ea5a78fdcb1ad387e6d44db883d758ba4d0cdeedc3482f1d5f492c2. 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/QZDA72076669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3d8f3893a9712f57e9cbd6235c6485cee6a9e0ffe4a806eca9a1565e23da05. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZES82038590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637da76d58a1f7c1689eb2a05289d62d5faad7bfa738dde6b6ec9df4627f902a. 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/QZMEQ2005121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd55d87a905a58e42926fa1629f1b99d30758ca667f8f7c2e4fcaa153b6a2f4. 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/QZMEQ2005125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca639eb10b9d6ba7a44bb22563a02b162ed3f67a7456dd0997ce1fdf0105f3c7. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZDA52124903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475063e7d3a98de031179ddf9aea9a11ca6964baa06f2c396c01bb8f9fc604b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA62166548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2440c91dbed1c3b2bc059675b81f14d1bb9d34b5fef47a28e0325d487b33c54. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZES72125624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4febe5ba87d017ee7c1ec69c475015b6fb67599fdb79cad32b8cc33826a2941. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN92190048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357dc208fea4e04e7c723d19efb6ae6f071f367820ee83e0f14ec504809a7d9b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6F2158438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2fe56f7eb0c39f4f267e01d84d885be1994f56758b1a7cabb56ce149743402. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QZMEM2169921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c401aac592bd00cadb6d26064710b9a15db2df04c3753eaaeb847828e9f7e2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZMEP2197945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1b250b624e7fcef9494ebfea413658a96cd27b2944d8d225e303ee312d89d8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEP2197946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6246acdedd78b455f92b58241f54666cd98bebf65186fc10ed785ae38f1f2c4d. 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/QZMEP2197947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf163231d3b98f3c8d0f3526527959ba962a481afcee17985c0953d09457044. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZNWZ2187668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9740dd46221b2b2fe5775a114e439a16aac61bb5cc2231a8e05c28219567ed9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZFZ22251621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d2951c4a9d6c363ff4503ab093814347b26f3a130a1a3e59f93035de12b468. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZES62238076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d2951c4a9d6c363ff4503ab093814347b26f3a130a1a3e59f93035de12b468. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES62238076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5085b618ed51984252bde5b0fd2b20a68063fb51cc68e6493dd0ae31d7f75. 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/QZES62238083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a76ca29269f65956e3a71e0d6f6b5cc61530549d776654aa9392c8b9174ab9. 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/QZES62238087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20690d8acd5f5bbd3a4143d4deab177ba6d3bcf0c1662ff8e69812ea79460e1a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6N2291034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a569b8d3d43c44f01049b285451dfb44679dc1614ad004a43c55bfa62950ce7. 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/QZMER2266489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a6bbc09a2a262b7236a0c69350c46105651a2b9cf462dc49600b41e341ee4a. 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/QZVEM2310364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2b598f0bf3a3aa8657868181dde097ceefdcc2b708f0dedc67cfca537ff85. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZVEM2318812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31afd6558e4abf0d13442ad8f154481d4453c2da57a821f31c7c3ce4d91ee1c3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZVEM2330613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490f675e83fef5170141ec086c590230d5f26655f094eb3568bd9cfbcff9bc57. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QZVEM2353942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd914442278975c40a613fac0062a24b705dc9f67e82670215251abd0f15d0b4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZVEM2353943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a3189e11a872d98c99083ecd448d351b1287ad398447aa73f989126a515fa9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZVEM2353944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeea8de997ee85acade81f92bdda8d33ac01abdc010c74db16b1282f6f9efab. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZVEM2353946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cdea8f4c55d0c819336edcc37a0f7ed4c74e14c64084646d1b1cc0f3e4581e. 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/QZFZ72401511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4432549344cdf79888b0f4f3bb2dac4c05ddff9bc11b96e2fe11265383a36b. 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/QZPEW2406395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9b3aaae9fe10248d51e5ce6e76226c1964cb986c9a05e8f6355ec459129e07. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES82478356.
what could've would've should've maybe been
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c6225f47a6754f7ad5b03fa0a26be5a74c4fb0cf92e93a95fc87b1bec87f85. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB22423499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4904ad1575c0db6bb592cc4e297607871cc8150bfb2f4ef12ce274e2c908f974. 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/QZK6K2377278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797c881e1115a1b420c49638803d550bc0bf0e0174fe258b7b111cdecaf3cfe5. 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/QZTB92292058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209da98f7840a8db58c85d96ef0128021627bcb68dca3da1e3e6884932629d57. 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/QZTAU2207366.