Ambia may refer to : Places and jurisdictions in Africa Ambia (Mauretania), an ancient former bishopric and present Latin Catholic titular see Ambia, Ihosy, Madagascar, a town Ambia, Mahabo, Madag
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 0x4d4decc7c7025622c26096620c2f2d48345bf489a7067b7c923ceda35a774f7b. 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/6ddf33dd-79b2-4cea-aaac-550ee272a409.json and https://artists.proofprofile.net/proofs/artist/6ddf33dd-79b2-4cea-aaac-550ee272a409.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 0x456a3026265279ac88b2a46e7dfdba12518d617303d0025c6a0baae4c30c271f. 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/USL4Q2430900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f717f9ef767a0daaf3f30c23f1771ff5e214508e6dff4b9da14d6907109130. 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/USL4Q2430901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5563aa731aa74d399743cc293cd432a8308db9a7d1a88cd3c0934cbcf416b54. 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/USL4Q2430902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5d055c670959964259fc74623d864a035a47604d663b893e18c2b1f757b3bc. 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/USL4Q2430903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc11a3addde5b762949f2d1c455934d4ff157f92b612529192eba5e995a85eb. 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/USL4Q2430904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1271cf2d83e2cea249a91ba84bedb784743e6687f693fd16c41ecde16179cdc. 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/USL4Q2430905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704cd30160c4947f12866960631ad58860192d090bbcbbc33a9c92214da79706. 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/USL4Q2430906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f0faa6e6d3f611608a7d0db72562a466755756790bdf84ba03691e6cc759e. 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/USL4Q2430907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4572d70f78b48f4894c4936f1208d847c165309366c0acde1088e39b830030f. 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/USL4Q2430908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec74b244a00ed97c5ecaffb2ca3bda8b3b522238c208ab5b64261d1c136de5. 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/USL4Q2430909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fac64996179cc05722940a8d5960e1f47f92cf6d03fe82faa90264c89d9220. 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/USHM92467663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d26d03efd71bbe67d4db30df1faed09ce0b722118e70180535894e308b08bb. 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/USHM92467664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf694b47e7653ba41e94726c3783a322eca8011cb30b6e48e2399c2b7996bca. 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/USHM92467665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39609dbca6ac1f4477577f8140509860106ee4ab3acbf2d087600e0660d9eb5. 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/USHM92467666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe31e435ab2f3e4b9f13c24ebb0e690c8f5441edbb4c23a23048200709631a6. 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/USHM92467667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4e57670591c7b6066b142bdc5d6a26f84c1dff6fdaecb81ca954343a107ad. 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/USHM92467668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd8eb404e672fb2ecca20102f43ece5013896634a4f49ec93b8f7a0c59464c. 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/USHM92467669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222f8182b87438b1f16e2b86678e336e61b5296525ddc2f5a4c4ba2e7e9e4558. 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/USHM92467670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d933dba746dfbb5f06149f4aae3e90443bc96303b22c33043af0e33ca360aae. 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/USHM92467671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98048d670d9fc0fa051cc671dc99160c235bdbda020a5528d3bd96a2989826ea. 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/USHM92467672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00762a7a9ce6b80263d6e937f6c434c846ad3e1bec39b1c7d21aefa74d45ea2. 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/USHM92410304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce55b0452dfcd83145cf8fdf33b5d11691c6d111079a7e0e4480fa4229acfa26. 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/USHM92410305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3666d30b56b65daa628c1285efef5eabdd105bf90ea0ec5c72b8f9b8ce56e8fc. 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/USHM92410306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b8a5858035dfa527fc1e3195b4376afced7e3282a9c2beef903cc8ac98fad8. 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/USHM92410307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77a3808aa2806e90c30903c6b15422c78995b719447096b096c0938f21ada8a. 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/USHM92410308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985300657947485acabc9fc44e3e04a31a1204c0dc6bcb8832e612835ff5c060. 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/USHM92410309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c914efa1d50f66b5bb6e138bd4d0ffd9e1f240d18807de440eb2efd34062ca8. 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/USHM92410310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e4111bd09df9d84e1abf26fa5be84f6dba0212fde8882610b92cc568e31ca. 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/USHM92410311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2174cd47a225b4134e52ee7bd516e10f1ea0fb1dca5e99946aa12864719669f4. 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/USHM92410312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d126d2c12691367738f1fdfe6b948fd2e08cef5b30897e9b39c8ebaa0f2f036. 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/CAWK52475259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f2ff18062bedd656d150391b89abac4341eb044de0af5a7ff295d28c0d5439. 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/CAWK52475260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01d0117eba3da75510ad2bb33d4aead00a5b0493c821697c8872d73a6892f49. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CAWK52471857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f173df425eaef1c606dfbec1ae7d44d4a1e10e2eaafe5f3d7de9cc8ad80a6b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CAWK52465052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b189c1e99c0c54fb7c9d2f6acc3b327d59f28fbf852a74905435d2002ef6e. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USHM22070627.