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 0xc9849a70d5628b0e50131f0b8b625496978695df49d0f08a725db33e63414a5f. 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/0c151284-1023-42ca-b7dd-a060431e2ecf.json and https://artists.proofprofile.net/proofs/artist/0c151284-1023-42ca-b7dd-a060431e2ecf.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 0xd177aaaa568a834f6ba372560b8451cf62f0d44612c726f3069733119330f8de. 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/TR0330603731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc4144f448fcbb4e24b5e10ea7aaf59e9badfd0b27b555e3861e706483bb06b. 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/TR0330603734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bea00291fc69a892167836385ee399909e905b8d5d187631eff985b4e0bdc8b. 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/TR0330603730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8976f6143a6fe746c534abfcd3d64b6162d27867deda07f4340cf950a3d0b157. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0330603732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65570a531f5e26e272f3f0c634ee2a616726000b88f8c82c713b2b6c068a1b62. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0330603729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b183add16ea6e436c8fae66703d6166faac2abc5f1b1ae2370316f6eebb539. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TR0330603733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0770056f330c5eba8d374bea70f05b8eb5cc35b4b94e54da9e6ec7ebe8395042. 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/TR0330603728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a09cddc1bb5c1bf9f6756dd6259778aa4cec11068046df9f4d9f75e973ba6d8. 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/TR0330603727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd862279ffd97d75ff33c7118145014e640d50b929cbebb40a143fd37dab13530. 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/TR0330603726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b386d64b24da4eabafd5ee91d76331af729a3aa549209aca1c63c995e3d563. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/TR0330603725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f8cf2d75b43fa193a904616b51ffeac5eb8ee7b6ef665bfe622fc261e53651. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TR0330603724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454ec080bf6dde533a6145492d846ec56991c5b05771b531d7d448391e8e3a87. 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/TR0330603723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda98357606797d880e7f43e9027ff3015b6b791c34e5691f92ab279626ef2c95. 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/TR6791100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282141e01c0f9ca350855c03b16afbfed53b24148d10c379126b67571e004573. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/TR6791100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd707456f9ebd0a6703fce1f36b770ac3f5250a35cba2382fbbc2fb575e3eaae6. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/TR6791100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f18987d5d054bbadf8887611d9dab0048a096a1e74f13633037ee1f074d12. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0331911806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab8bd5bd730d8d752b9e57892ba773bc1c6f2afd0f9b1fd61d94c77e7bf81a3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TR0331911809.
Dolanı Dolanı Gelir (Feyzullah Çınar Eserleri 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594c63b95d0ac76bff149b8978ee8f8fd93843f5ed389f4b60bdbcb50eec865e. 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/TR0331501690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19f111871fa94a775bb1930ecbc4748b064654b030c687ce4f946abe7f8c64. 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/TR0331501712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe953d928fa0eae16f7bc083ba44c685510c0f3c3a7ba70c81b9ea31c7b42f801. 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/TR0331409887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ebbd02f747e360fdcc4473a270ec93581d5f654fb8743d1598fa683122826. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TR0332400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79352e77c606c84ff219012acb1a1befee712a847414c3f5178c76e0269b00f7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TRBBC1800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ad2b3f6d0c087e8f3052683f1e257d948aa16365d01381d0101733a3b225a. 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/TR2040600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13209bb84cc10b8240a2e6493216939602835fdcabfd4a1dcc36c8010e378846. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TR2040600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaf09838d7a8bcd68eeb550455fdbb1e23723852d4cb1700c0a9ef9e8e8f517. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0432104326.