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 0xb4c075e2577232b553c1e6ca21b9997b112963a9740024f6c8cd02c2ee40aa6b. 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/31ffbca3-7f9d-4975-bacf-02037409bdfe.json and https://artists.proofprofile.net/proofs/artist/31ffbca3-7f9d-4975-bacf-02037409bdfe.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 0x9a6fb6c168fc391c151cdae5b9215f998e345a158d3003ed558b990c0a49ab60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2373544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29b6c2e02310883cdeb9d870593943838a55e2945d478ae40bf95ca39ab1827. 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/CA5KR2373545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36cf9aa8e332f07434e32f2535833cea0af2dfab336e722ff3ddfe4b55201f5. 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/CA5KR2373546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a45509173e75850b1e48ebe83914652f3d9a46c7bd215b27ce6cdaa36b5c92. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2373547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e471c3a3449ea43a34b61bac40c32eaff7321cf89eca3d1432b0f4187c6b356. 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/CA5KR2373548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e268fd6c547ebc6b1a0a7a39345ac28aaf50b64aaa271125a8e05277881bb2b. 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/CA5KR2373550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc022becc85d1af10994d2683bae032f2468e889997d9034b0f711251d96a392d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CA5KR2373549.
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 0xa987c04c42605304e0eb94260f8ea35fe472046719b6da9a2e61cda2d0b040a9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CA5KR2373551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa71a65e83eee6ddd68ae95e5407e2a56f8aac06a011186b7041326f0927415. 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/QZTGW2401862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bc8436a83db81cfd37adec8305b215975096838c343c2e8d71e1273c7a1143. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTGW2401866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8628353cb8d30ee77d34e74174eb0c2c0fcd626e692add8c9448435a8c87bb. 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/QZTGW2401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9d541dd8570fb05c64f355666cabd2c616f53755b457ff2fd3a61c500526e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTGW2401871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2a66c2bbe4c3508a001d28fe0efa89731a6902f95b6b17159ae4f56d84d571. 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/QZTGW2401841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3cc61b9a2fc65d8a63de36f6d63af6ef61d0dfc5d944dc3a69790b7181d16c. 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/QZTGW2401852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51234d99d0c1a73407721a459c464205e8988eb4a4a54abef5fab8077ca88d. 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/QZTGW2401825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953ff17d020c75b23c9a80e860deb9afb39f2fa93d07b72b08fa88481d17211. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTGW2401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f4d0e01fb52101793202e7df6e1d1b70f150b8fda2674a50cd22e10eeefb3e. 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/QZTGW2401398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a64b8c8582c7fc09f114ad5a8b8d44fa7b3008e6315bd46d2ecda1df366e8ca. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZTGW2401395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bc598bd778f89da2acddb29026942ae454ad93c3d372df2a24eff5f4935cc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTGW2401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628e3cb486df0629b6712542ad95cf0b52c4c640823a0e9be653754852ff6ab3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZTGW2401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5418da6cb6d540c95dec761f31edc7d9343c1d7b7d6b284063935ce23fc99763. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTGW2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0f634a304c65f857976bf85630456cc06c270f76473996ea47932d6a7244bf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2445537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d4e6670a78a2f9580379a5583a4bd0185c6525401bd99700e89957047d121d. 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/CA5KR2445538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011ad031f92c2c8d9c77006ef6703b9bdffadfaebdd5a3c23c2137c49360210. 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/CA5KR2445541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203955db9a3431a0b561c4c7f88f5dcdf3c76f45315cbe73c641b006fa12be50. 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/CA5KR2445542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692e51556bd8182ecd7d834af40381addae650540434f2205da0ce89a9353835. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/CA5KR2445539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb242dd16f38ab8aa24ca4853bcd98905fd6faa04ba6e380104bd54d569765. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR2445540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416f4c42b3b9ca14910ff63a7a442db60fb69e2140e4f72710fd3895b6b19d65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2444618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc6ad3b6ee58675cf0a4ef16c415ed5ebb1d67e0dc6e557e2e5f8a98dcca9db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2444619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d220867f68f72311c8cf2b8eb81759c18ae9a4d751acff018e26075bdf827b. 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/CA5KR2444622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ae32bb20d06b14790447e085235c8119576c5ab9f54878122dd7ced7439ffd. 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/CA5KR2444623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63f55cbc0173972e76d4629fc6867645d0179dfaaa6772a108916676b87149. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CA5KR2444617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e842d9f2dba92131ef8f42cb825de985d4ab6cead3484efc09bb9f6eb6a9295. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CA5KR2444620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022a4f65651ec2cd8a55c8bf50ddfe65ff4d3a96c04ded16abaeb469ef3d7b0. 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/CA5KR2375147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8041eb061aec503f7e98fa7e2c72172b0e321b5b9c172379b63023641c821a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2375148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803dffda4151d7e90aeeecc6f96f4f44047a3bbf9989743600f5801ba5bbde9f. 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/CA5KR2375150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e9753170ad7ba992afa37e5d9c3e60887a8390e55c713485c18bf38bb544f1. 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/CA5KR2375151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55393124846bb37b8e75ab6a9d59809e3d7f66ca67163516d725dd3b9d1235a8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CA5KR2375149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe577eae9577b91c341c6cc5f2e46fa96c10a8644c8b4fc53f84bbe4135a437c. 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/CA5KR2375146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2539ca7833b86ae936960f39743327d07acc2ca673b7731ae4dae9f08556e4. 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/CA5KR2375139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80672c48827b9a1d5fdc2263db81a33c74abb1367b6a961031262547927dc0e7. 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/CA5KR2375136.