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 0x655216af4448c728bb9b3ffd013316acc82ad9fb0f1cc2714626915e293999b2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0da5a13e-a19d-4197-a63f-728d7e981b9e.json and https://artists.proofprofile.net/proofs/artist/0da5a13e-a19d-4197-a63f-728d7e981b9e.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 0x9f5d83af6ed626d4fa1d46810a0881e420f3facb7fff7c8ff42796d12898942d. 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/NLRD52323263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd50a8fdd84248ebc5fd110d0bf0f6e56e0e55d710bfc250c7c5b60a5d74d9be. 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/NLRD52024466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23ff37f7933afb6e9e8b5dcd972f6d78f514b80df1be2a572abc025a3b4d60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52323264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e7193be0ed7b254da8d7980750ba81574637a1e01e0f61b96593d1546e9b1. 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/NLRD52323265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464f96c85ebdce3e3c2427210dd832afc52252213f6dc5d62d504a44809adf1. 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/NLRD52323266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6e3c48c8847aca02d4a0bfe136d9003c78015abb55d99263eeb921bfc43f2d. 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/NLRD52323267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a516294fd80078da9b9fdc81e70e4894f53bc0e0def245c5374362ddc39dba. 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/NLRD52323268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ef88125f830e5220dc947ce08e0c2a6e8a24eefe5b6a40527a5bc4436181a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52323269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa207a7b3752459b19a4e022f384367bb569d1b9b0c1374f789f54bd3bca12d4e. 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/NLRD52024469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420544f75cc149db15559a2a3c0608125644d9c852d9d36d543870ef9dda449. 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/NLRD52024437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd47a0d5927b4ae549179c75838734b75b7649cee31eee7cecc5ce23f9bd1a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52024415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae50c317aa287d6cda87c8f4c654424b9bc0ae35c987574217ef176148715e75. 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/NLRD52323347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc653ce90304fffe06a499c85bce57e5db5e65042f08c0d8d8e3d290c7856d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52354224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbacfb35337221f17598f39f41f09704527e305c190e0b9ae4cdd801150279b3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52354225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb995f75576bb0ce397dd1c6ba66894c94d58a5eea985c1af0c9acca3f71cb2fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52354226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4a3164c8eae38e0ec31fce0e044ab858635e915d245891d803707f13453fe8. 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/NLRD52323338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae50c317aa287d6cda87c8f4c654424b9bc0ae35c987574217ef176148715e75. 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/NLRD52323347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4a3164c8eae38e0ec31fce0e044ab858635e915d245891d803707f13453fe8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52323338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3123b5911f71825644e17603c1b95455fd983d0ee15d5892bf0d7afda696c1. 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/NLRD52323314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e7193be0ed7b254da8d7980750ba81574637a1e01e0f61b96593d1546e9b1. 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/NLRD52323265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d450b5e39a75dc2f2703a1306816904ea6945e29569fffc6a7c83901b969a5a. 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/NLRD52323291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78e2a85efaf35d4e155818b1e605ce28fdc94502be312cf5f0c57a5fcd61569. 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/NLRD52323292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd50a8fdd84248ebc5fd110d0bf0f6e56e0e55d710bfc250c7c5b60a5d74d9be. 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/NLRD52024466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d67d165f2ac634d26ea27560a828075242a67c24c796ea6643f4e4b7f7c72f. 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/NLRD52024471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d2284f022d4b7bc244ff697d4af9dff0d92797bd600becc64348ae5a43e696. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:13:19Z), 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/NLRD52024470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7009311d57d5da0a26b0cd98394e8486e375a7654b051772daa8521a3049140. 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/NLRD52024449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420544f75cc149db15559a2a3c0608125644d9c852d9d36d543870ef9dda449. 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/NLRD52024437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69b235b6ff93296fa8d6418ca9cf1af77f3b2c1fa67c2c8a65727fc42ec907. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLRD52024436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420544f75cc149db15559a2a3c0608125644d9c852d9d36d543870ef9dda449. 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/NLRD52024437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761aca032f0c0c6cffd04ecd15f2acb4698d2c7da7b3a80edc67f429ef1eadbc. 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/NLRD52024421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c545c65a5679a8723e4b9fbcc303ed96439d63dc98f0c5bfe52c2ebea61908c. 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/NLRD52024422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae17cf0b3a6aa90b85ac3890845268e1a817d4e8f08ce8dac5b3931654acd5. 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/USL4R2096865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c215f39993ad6743a2a0714c43934f0f98da13c7ef1f2198e74fbed17d9270. 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/USHM82135541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe789d4439984f8e4f1343f2b9115b248f3875fdd0e02a2f3ac26c2dcd5823da6. 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/USL4R2096167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3525f68333547ff858519ae93e3ebd130431b17a479abb9e536da813f75e15e. 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/USHM82135542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9e8f6dbd27c57f5828719c4138f21fe3ad98b8b3842e6ee22bf9259b00109. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USHM82135543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe789d4439984f8e4f1343f2b9115b248f3875fdd0e02a2f3ac26c2dcd5823da6. 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/USL4R2096167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae17cf0b3a6aa90b85ac3890845268e1a817d4e8f08ce8dac5b3931654acd5. 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/USL4R2096865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d4277ddaa14a71c527e8533494988260216c0c9e71d352e4466c26281d19e. 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/TCAEY2042016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddefbe8622b31ef7a95b21d50178a57a57d84d1561a351cd448eb6bf08df2f1. 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/NLRD52024440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606910a6bd5b7b3bf6118b78621cc5331b04943add6f4509180d125a6597af6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22371700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07f7701b5669a2046f6332e6c44dee7d9bc87d50a75e639adb550aab557137. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22372937.