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 0x4c0cf1cc37f973626c598a978ed65a9aaa1e2b11d90613e75b688d11e407a4b4. 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/855a494d-5dc8-404a-8556-0c0d76f2f667.json and https://artists.proofprofile.net/proofs/artist/855a494d-5dc8-404a-8556-0c0d76f2f667.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Если в альбом не попало, не бойся, не пропадет
если в альбом не попало, не бойся, не пропадет
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 0x524710373aae03d668dc8876753e53652107bd503d7c20fd196f13b5a182f1ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME1998212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b398e8c45044ca5b986e86680945f29bf2fc1b5b65b50eb087f052c6f2a2d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA0G1608401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a5a548ccb30abec5fb0c64841f17950c458acabcb20335ee93c424286897df. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME1998249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac95080300a0fa2fdab9f3d1007d68e71fb772fd28feedd20848d6bfd9d79c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/RUA0G1608431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38df9b08828af3f8dec7af1c057a032c2a9f60925366943a108a5d4dfd647a97. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QMFME1959053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bded7c2e27b1c433653a4f6d029e93ca2f812572f4d205cabd7a8d4c911644. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QMFME1959081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1816325ce125a3699ea91c4d3b9893555b0b930063855fdab279f97f26b6ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA0G1608378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223eb4c9756549b42eaf4eefa5f6ad7ca844074fbd3948c5654b2a4df29d8793. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA0G1608381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef027bef90168eab159bb8e08a1af951cfd2ae2b716257d2464f63d7e758e41. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA0G1608440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa84856975c7857c6af799b31485738718442982842f8440cc904c25051244. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QMFME1999583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef0d285ef5663a4572e9b2ea3f1bbd42cb83804f29c2d4bbec89c31535b28e6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMFME1999587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929d1dfc07f527c8369aff59c66a5c0cedbac7e1ccc9851e3109c8ef0b4c9c9f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME1999593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631d9f53d879a18419efe20b679f2fc525a192152a825f0a0639e0f18ddb8bb6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZL5N2324802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cba767a9fe96fbe36238377da37b782c982b73c4d4b41be3201b004c8a3c38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZL5N2325317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cd099cb3a3700c2e3501de080c4c72784c559d19db4780c99c02b8b1965cac. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZL5N2326904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cfc517bd868eea5d5da98136853dcb8833a20b4c461abd435ba4785fa1a66c. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZL5N2326906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed41dabd9b088ae316d245ebad99a91e2e30f2101a436c7684b0ec1a6055d072. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZL5N2326909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f71b2db23783247cba0c671a253ffcd4ff207785080c8ce4659a3e37d8e4a32. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZL5N2326295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b7a62026f3a5aaeebdd45e0a7cb206a047543570b263a33c8a0d1ae8baa3b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZL5N2326911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1117e849f067f51a1f31f3a6b805bd818837f52b3842baec4b1bfb0c19a3f8d8. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZL5N2326912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53878542aa1210bd5c8db45e83badb3970d08d1ce74b54f6eb9cc37b7e724e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZL5N2326913.