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 0xc7a7e41dbb7713d5a2859e8e1cd8d53faf098d29d905a0f9fd21fc0a3c74e7ed. 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/1de5f943-a0ce-4b44-9a34-9204c32a4b08.json and https://artists.proofprofile.net/proofs/artist/1de5f943-a0ce-4b44-9a34-9204c32a4b08.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 0x4958a83619bfcaea44889a6456c37d10301f79aca81287ee71b8ccc8a086cf7a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLZ8C2300750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef66cb68c521f258129f1826857e9458a858be9ed53a045af8258d4947b615. 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/NLZ8C2300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c84e63484d3311f471389a56ba231f5001e827e31963712c254c7a5c403dbd7. 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/NLZ8C2300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919de32fcf94356f8524eea63516f23a04ae2baff041f0b5fec25338e4ce8b2e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLZ8C2300755.
Sorcerers Only Count Events In Sets Of Threes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1e820af0c7cb0d17804a827e7555463143b11cf36d68b1c538ffa4d0a5260a. 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/NLZ8C2300756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184789ae0f2714527c109ebc39fd0b8f96c8330eb4e9cdfc105603cf33c76f9b. 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/NLZ8C2300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a29eb9bc0f3ddb112010bd9cc9c720199345154fae42b718488a7ed0e569a98. 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/NLZ8C2300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c970c7d7425d7ae0cb24b907f7e444a17d8d21cb91644fb16c2cc35a550a00. 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/NLZ8C2300760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c020dcbe07c2aa682b41cf6311687641f0c8e3468b46fcdf585ba2e718edbb. 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/NLZ8C2300762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595543a07c4025c5b0f54f80da95bcc61f3de026369a0618f0fd26dc55b159e. 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/NLZ8C2300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a271c4daacf704400201b061424c2c5758140c88ff6880f478cb2e53d39d22. 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/NLZ8C2300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5457db6f9e91ba21fb60652f622362b614b316cbec5fff572d7efc23c4813030. 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/NLZ8C2300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d0198410963a3f701865e5733fcb0ef79de5512928b43e677ceaba190dcbc. 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/BEIX82100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61067e13a360960a04f4a67b706bde7b73386915d919247ce0d74028fb893ef. 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/BEIX82100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff17f3b382a84f6e6bc33345b69f07a1b6683ff3191b36aea4c6ebadf88bdbb. 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/BEIX82100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924721a45362f778a2a122e7585577b01e16c47b65dcfa34bbd54b0501cecf64. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BEIX82100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06731b04a1e12e61cded701370086094d3e132e0dbcb5a4aeae3b145e3d18940. 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/BEIX82100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7947b465c1ad67d3c006da04c56489b52f5b3a8bdece6ae04b17ee61b495989a. 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/BEIX82100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aa280c0fe814a0c9bc52cd51b78019127e2fddba622cd3c5f7f84f54a81661. 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/BEIX82100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55708fb6c32cb4bdbb1cbc163becd26128dcfd6b40bf7350bc5afc3d566d462. 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/BEIX82100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90124657098f2dfc037b3ceb59484b28773169992ee6c1347884851236e01d92. 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/BEIX82100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7b81d019c2dbdd6ad84b100d71d80e395bbd2acde3adb317f20eeb9604d566. 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/BEIX82100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d1f050147953f95c95ede5b262cc9fd1d7c6667f5505de74327b363bfa757. 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/BEIX82500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abe95f0467826fcf6fa2372fd7cb709c71b3ee4d7f730ec72231e7535a6ce3a. 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/BEIX82500600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4a6cc1505973d3050bba51c929b4cce36516c7a906ec094bcf76c54a40a16. 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/BEIX82500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39683ceb5a091550da390bf2a12fec1315491c89e667791e15b229ef17f63f1. 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/BEIX82400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ef8358d4907ac6a6eecc5e523bd07201701c19148dfff36ea72d2e40410f2a. 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/NLZ8C2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b447461aa5e325f1087602d66eb6c6ac2acda3c2950ea7a1109821177ec8fb0. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLZ8C2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61067e13a360960a04f4a67b706bde7b73386915d919247ce0d74028fb893ef. 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/BEIX82100120.
How Is It to Be You? - Andrei Rusu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681e5bb561af6b521413b57b966c814d0dcf935831cbc3c0ca70c708aaf84103. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRIDO2310209.
How Is It to Be You? - Cosmo Vitelli Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a741b61b18d100151df566e901df427302aad23a4647533718593be70dde269. 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/FRIDO2310212.
Patient Zero - Dali Muru & The Polyphonic Swarm Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b33cbaf695742a4a93d79b5c939ecdb14a4eae3832d160611a49c5575d351. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRIDO2310215.
How Is It to Be You? - Andrei Rusu Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df86d9bc946a2d2b4ef0e1e736f2c8aebfad33e3a088f5103e53f936837aec. 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/FRIDO2310217.