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 0x28162d814850e52a2bc8c108c2785536f4c8da91af6457b1f6a07d0f0cc1dd4c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/736c973c-c1d8-4f11-aadb-6b327bef5ee2.json and https://artists.proofprofile.net/proofs/artist/736c973c-c1d8-4f11-aadb-6b327bef5ee2.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 0xb599b6be2ee653d04d0faaa739bf336ace32c01a76d27d7ebb2dff82827556df. 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/QZTAY2451712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da4b2a3a08a9834e0294b837ece75d284e8fc3f647dbe9a15175d0c0a22f96. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAY2451714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345b78ccb4c15dc1349b94518be6ba4e069d52c91a234edef7127c9c751bc9a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAY2451715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5364ef1319bfff3b33bf6deafd14928976f190af8f6b89d4ba3890d3a93a4b7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAY2451716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe8991b3c8c8ce1038383e26213448a61aec48fecf103094c1e44f592d600d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAY2451722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee657d57223e3cc3da599a493b1ba87f48464d35366fc036dd444859f247bba. 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/QZTAY2451713.
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 0x104006199ba42b8088a77ee5f694eed2bd9a512183e5a529f8acf206ad43ce93. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZTAY2451717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eccf1d9c4dca8747110aa3dd19d2d722c2da8d9378140589c7a612868e0904. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTAY2451718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6239452208b26b43cfc654ecbe1f016a27068f2a09cfc4e6882a96cd1b563a5d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZTAY2451719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17cf4ad31a39fdc0e1400139476d03de0a07e91fec55a69398bc518302dfa1a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZTAY2451720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bafbc1f9c461e306322810555ebf333abbf2f5999585fc36abe767ab17baf37. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QZTAY2451721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2e3845a4ad65746959c910f514f66a7cd8c5bfc73c692663fdcda48262d3ff. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTAY2451723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc75e86a78653bd7d66e1eb2bb51147b4577f6bee5c358ed7901e406a73396a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZTAY2451724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d81507cd19b8a41cbb695fe647d9cb420d98561e8e07a7fbb68229bf8d58bc2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZRP52431772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af1952e935c5f190359b97e78f7229445e2866bf798105b87cdf06334f1fda4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZRP52431774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d2fd5b1c73aa89e3f0e6472439fb6c2cbb368c30c72bb6694147bd97d34af9. 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/QZRP52431780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536d65856cd698dbcd4fbb0bc0f6c5f3335890297a2b86ae3de1ff8f60025c29. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZRP52431773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5a6ec8545315d54d4b33ed82b6ff55be43a8641ff2b006b971b0a648002276. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZRP52431775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048bc91090dc8cf7acbfbac5ea226e220e2b1bdf0e18907f5cd0c27d5b45ace2. 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/QZRP52431776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f62fbf763120efe6a267aa6e334c7d12868210ce8b84f820de4437d79e197c. 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/QZRP52431777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19061221dbd3636db055920a75eb01949c62d98e031f26251e9f346a61f58626. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZRP52431778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916decbb61b001d5514a6fe9e51f1313c6cfe39084e082fe998e197a00225da. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZRP52431779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aed28d51e240913d6a715462cf74ac1bdb2d6d9828233ec91171a29bb88b1a. 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/QZFZ22589444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b58c22f5073df1888248981b48054ec9eaccd976e06f1bd18c37b6ddc8bb7ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ22589447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd576ec88b7a65d3cdc99d0746e9386b58e93422a20d616973fdbf5cae24ff9b7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ22589451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6a09fa407e752b59896e41e79e2f09df7f6fdd78c6fb8c3255a89bc3127e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ22589452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeefe04ed2cbac227c47d30044f84440ab50c31bf6c7f70c0beb91e6bc8363d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ22589456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8e25769c56d57f0b3a054451e7542b1fd58c25ad1010b2c19897710abf7a65. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZFZ22589445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd86aa6c82c7ea2f9bee63f1a320a3d4775c4079892e365d40a8ce889a452aa. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZFZ22589453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9777b17608442e725c1c56b949944b0591afe3dd946b778f0a4a69f1621c521. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZFZ22589464.
Aynalı Tahir (Original TV Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf35a772d196acce34c3c766d37f2a2776a46d3a4838e96357683c33eb54f7d9. 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/QZTB42377871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8886f5e9e0a2cd37c2eb1b05e4b87380ab5fe92e93c0d4158007b1433aaa1a51. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTB42377870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c077e98b13e8059358f4bd947b151229c0305c17f7e4abdba35b6c19f775ab3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFL2376721.