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 0xfe2924472499df5e3377837442193797a8488330a956067e6e3bdfddf46a08c7. 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/e5dcdc14-0075-4957-b833-f6ee62ec9331.json and https://artists.proofprofile.net/proofs/artist/e5dcdc14-0075-4957-b833-f6ee62ec9331.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 0xdae525ace5d100c37c7296f2245b2462f848335f837a10f11446df938cc8b7bf. 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/PLC062232818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d21d17e146c95edc75ce42d2f570c26a0302e28d80f61194c064ad0f28e830. 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/PLC062234822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107fbeb6a3f52a51150b8de911073e31d49e26402f396bd2722a6b818da43f1. 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/PLC062230827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4aa32833a6de367ad083a3ef45138e5dfd4cb15e7fc82aede92478f07ed50. 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/PLC062234826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a19bbd413882fbcc16dfaff7ada3f3089ea1b952e5f99e796056a09a7e00a1b. 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/PLC062234829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c16aa885fa91815a0ae9007f3139ca7b9a218cdd656c8c437bb0f61e874362. 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/PLC061908991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168bbaf8ff3378d1c263b4bf804b789cfc5655173c04eda6cef8f0b4d29f5dd2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062011157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3f94cb49393d808cd2d50771499a85e85ebb78d918a260292e260151f6130. 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/PLC062011709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd066ac7305835a01b6c09982f739202e7b56142810af57f86a02f44bd1d98. 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/PLC062011836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1ae6d9c66b64c91d51a8aaeb504d39333a1157329ccb16b2ba1f8718c1719. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLC062011838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf077b571a9eb9d42e181d3b71cdbe11f976be82a9ee4a0beadca637344a26e45. 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/PLC062011839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61d578a6560334781e64d09b72653259e914aee02f9a723ff24a11a1d33f8af. 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/PLC062011840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50df74ced35aaeedb871c1c500ad4415016efba36026799895ff5867a2eb588. 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/PLC062011269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847e0a41a161dd8acb15d021f14ad4e01041b64a1714c35a5730bea8d4f85576. 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/PLC062011842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058b5a9f8a5430d38160dafd8cd1ad70c9eaea657fa052466674d4cfeccee01f. 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/PLA552500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb587bf55c10c65cadf3b29b42a8f007b503fb29c08758728a5caf965fa10bd. 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/PLA552400575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a1c2790d1a2a96f3e0a7c53207451dd64035d12c926603a31aecfc3b34e67. 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/PLA552301019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012f83335d7852ed3805f7574991d5ae6cac68f026064c31ef1cc38e5b5342e. 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/PLA552300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26276351cbb5f662954463f7e6d3a7ec7ae83d4543b17b49029eeee785f82a2f. 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/PLC062366618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae525ace5d100c37c7296f2245b2462f848335f837a10f11446df938cc8b7bf. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PLC062232818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107fbeb6a3f52a51150b8de911073e31d49e26402f396bd2722a6b818da43f1. 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/PLC062230827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc232a7ef635b28fa8a04c64c9b447651cfffb2c63e9c6f6594876a8c6b6a48f2. 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/PLC062221729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cf9534c459c89aa7285d5da5fe33c4685ab534a23160b36e69b49d5aa530cc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/PLC062119244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f460b2ce1dcab32b564af8882fc01ad1366a0875439eb8a137d06912af2d78. 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/PLC062116274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd066ac7305835a01b6c09982f739202e7b56142810af57f86a02f44bd1d98. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLC062011836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1ae6d9c66b64c91d51a8aaeb504d39333a1157329ccb16b2ba1f8718c1719. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:49:52Z), 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/PLC062011838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3f94cb49393d808cd2d50771499a85e85ebb78d918a260292e260151f6130. 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/PLC062011709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50df74ced35aaeedb871c1c500ad4415016efba36026799895ff5867a2eb588. 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/PLC062011269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168bbaf8ff3378d1c263b4bf804b789cfc5655173c04eda6cef8f0b4d29f5dd2. 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/PLC062011157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a27ad9a7fef137327230bfe9c484fadb2e90df8566b8c10e1b568350406a00. 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/PLC062010426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc85bbddb734cab6a86be2e965cf09442d6fb736b4d23d5dbd863494ec7f759. 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/PLC062010241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0029690d69cf88c3c3e2b0ce48d51f40b4f84092e67240ab38b155b4b3514ceb. 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/PLC062010079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e987bca1143db98b392e418ccb1d8967baffe86e4b615369cb83c3d4db40fd. 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/PLC062009834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5458b1074062dc2b9a7eb665a49a769502fe6cefed9fa6920d7a191e0358976f. 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/PLV402000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ee059bc521088bb0ff46e93293e3c20947ba33f9955ba5eb9201d4727efeb. 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/PLC062009558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789e5397f792ceab936de07d36c89426a9d9828a0ea369206d84a4d3ddb4e0a4. 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/PLC062009293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf32c0838f98d58296d7cf6563b4815713bde80b07dcf437d07bf1d024a90d60. 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/PLC061908838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8834a5b4f73f171d7d0407793c4e940b9f6490f2b87d66f9b9cc8a7ea2708066. 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/PLF241905956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5458b1074062dc2b9a7eb665a49a769502fe6cefed9fa6920d7a191e0358976f. 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/PLV402000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceda9921427b1d2722347aeef0d5b99b1ada920c5242d910194ea123e4a8039. 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/PLC062112465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa56d4ada25ddd6bae817d791ce391b7f1da90b177f5c155835e074cfe0c088. 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/PLF241906029.