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 0xeb8967f5b086f01d3319e4440e516370024c74ebeef788ba8a1dde12b9266196. 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/566e6cc8-bb45-46e7-a2fc-2cd29c6ea041.json and https://artists.proofprofile.net/proofs/artist/566e6cc8-bb45-46e7-a2fc-2cd29c6ea041.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 0x9a850aca0e52e2a07d5e742d1ff20137f438aa92475be2545cd0b90449e691b1. 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/QM24S2402545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c16d8a04b765ed2260fd855da8359fcd1bff3160a7e7cbdfc4d3717ef6d2bc. 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/QM24S2402544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aecbe3a86ded04acfb39a4d3ded90c9771587e5891355b0514069b953bb8bd6. 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/QM24S2402542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8e0bce2c2ab9e92e8b3919e634de1f430e0f5628e52f667da8c84d5f1c9b58. 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/QM24S2402541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510da0a196e173f4fb4482b616667c86de0db058b245a56633beaf564cc48cf9. 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/TCAFO2102284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa72d2928850e9f74b19b410248fe0c3e561c3367926c137bc46d137ec5bf67f. 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/TCAFO2102309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d49c53d7be74b4d2a6d5195f9d1f09c0e757c89c2fc299c503828fe72fd473. 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/TCAFO2102336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74600e90bf55d35b32f6650475a56177c750b952c158318641bb49a82774442a. 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/TCAFO2102533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9239efed81e09cf55bbc6ee70934061d7ba05468cc57c75fb3a1d53fc37d68e9. 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/TCAFO2102345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea70dddb3191ae17e3c575fb73c9821b54edb31c15aa8aa45cdac4f4ded943e. 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/TCAFO2102355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758c1b9bf449715b6185ec6be180e97d26b5233fd3430d83b93caaf8295ca56. 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/TCAFO2102363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bba7c3e123f46304f0b18404e90438c38441d09521c9dd0d522ebe74e99c5c. 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/QZAR51700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b69d0bd7d7c1d7d3ed0ea54cdf54c4a3530dcb9c0268b7e4ca310d1df6c14e. 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/QZAR51700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8fadd9ca4739fe61dd41bca5efa385fb4722bd4e262cdf1200e60db9426a3. 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/QZAR51700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255b550608bbbad8a62ad0b545b7e1f0b94904f934785f451549629e718c755e. 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/QZAR51700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df055e42c50056547673cfc3c0475a51b226df79c7cd0b0ff383cd7dbd7ad4. 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/QZAR51700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810856edadbe407d432aea241336c6b1086bf9b50473c29da602c27ae2937cb1. 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/QZAR51700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd427c4835d9cf0c301f4878c36ee7b807143663cbb0114e58bfcecb6956cbf1d. 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/QMPJ21300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e147c46848fbf40b4c3d8e53e447830ba9ca53f6000a31505afef1095add9a. 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/QMPJ21300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc134b2c5ab6b8faf0073d5f5d5edd3eeb00f9146655d58f3d1b579834e16bffa. 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/QMPJ21300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d67bcb979bbe7b01dfdb0a359ce1d99ea7aa84239f050faca02f497a16cbd5. 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/QMPJ21300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5bb70fb6f56d6dc11edd85a8706658a349de60b337c0bf886918bd49846d7e. 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/QMPJ21300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b38915a8f6757e85471c3bbab72ac3a65e8ce13f11b188815d69cfe894df761. 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/QMPJ21300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca7bfaeb05e538426fdc6df8fe7f42fdb63e16879370f8b15e0f03914f6175d. 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/QMPJ21300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e7ccf7a88720f8d6729048740cb358c837a503e5018d7129f559ec1d996f3a. 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/QMPJ21300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d3934afa6815af56388dcea40a09aad111caac9f102fdcea075a32b39a5b5f. 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/QMPJ21300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a322883becf1df4e7df3c27cf8a51dc77999b7f235bffad938f966cfdbf01c. 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/QMPJ21300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c85ce49dd496dc7b81ae8d961f34707f517e3e0f614714642bb199e6f30ee2. 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/QMPJ21300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ce3fec0f637f707de2cf6c8498cc8e9c53bba2c66115ee0173f94d66f09253. 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/QMPJ21300047.