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 0xd47f4acd3008be598eb2861187370be19ebc474f8243f24e1ef2150bca7f04a0. 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/d9f69ee0-00b1-447a-bdac-9964fc672eb9.json and https://artists.proofprofile.net/proofs/artist/d9f69ee0-00b1-447a-bdac-9964fc672eb9.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 0xd691ee62b2e318b7b25f54e499720df8953d503e9b6ffa50eb06a094f10ad7b3. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/RUA012000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea740bc20c6b1146164e49536f3def9f2e92159b0bc38e6c5726565e7ad8f4a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUA012000364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b81adc806ba8b347432b636895f2da26864b9bd7106446be5b28cad9c96437. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA012000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0140f35d64b0d4cfe8a7db19a728caca1b10203ad71aa2560b71f9d4ea51181. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/RUA012000369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61903c48e806c413ee50668a5a93749ec1cd491b86793c523f82b1c1fad7c83. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA012000739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acc8b8e04a91b8aee241c7b01dfce19070e4ba628497c53d709440ea96b3d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA012000802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87bbbfca6133480e9733839a6ad5e0a0fd6247aa2fd7286a8eb8096b96ec522. 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/RUA012100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585da372179046a749cc61f8bf045949713844c061e2cd5dcc94260e46c3792a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUA1D2150043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce6262c5437d4d15070a181f6dc9a83e6a0faac98c812c91c383ad68acc887e. 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/RUA1D2223830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0141c71d46d2f013d6320b9d882847cd8f63b25015abca8d0e6f7121f2284830. 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/RUA1D2243277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1313c46fd97a011454bd701831f31e394f63d1fbf3348e1d2a622c4ef3cd491d. 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/RUA1D2266658.
ПРИЗРАКОВ НЕ СУЩЕСТВУЕТ (New Year Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4e0c54c51d3587f749187ae1686870d3b07f8896fcdc73cd80c03483360256. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2324283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b055d725c99f6f0a9da26d8c783f7be8027a86d0ad7920f0ccbcf976f2149. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/RUA1D2411942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce00021f37973ef81fa0b9a3524cd6a652481d2a78ed3ccd11fdb3985514b662. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUAH62424922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9106cb1737f87d74248c9b4d788d7d6d882378bc31a87cb7d582ab3412d43bba. 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/RUAGV2509795.