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 0x8809912e27476941273edaa8302a427e7df020b1d260f35e3d43a175bc46a6e9. 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/9352686d-7158-45f7-a497-e23c517cd0a2.json and https://artists.proofprofile.net/proofs/artist/9352686d-7158-45f7-a497-e23c517cd0a2.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 0x901e9d5bdd06b5b30c4f27dbf292343282e932a62beb43b8e3246fc5f105ce72. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/UYM121700473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba5e86c887de6f2c1cacc3b65189e813f8fddf8e38df960466c090da098d0e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UYM121600678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0257dd2dfbe9bac27aa809f113c30ed42b989d2303e40824abf9f85279c5ffa1. 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/UYM121602515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f9ba8d0741f87c3f462396148e8e8c94e0fd5e649347784ce5af8dc8ca14c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ91630218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc9d2aec49df22d0e53cada131dd96c99219e831658a08c7653689fd5021879. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UYM121502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f7906a3a34a1a28d56fd5457fc0d24b5aa6496c426bc4c55594bd32f8d1dd. 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/UYM121600631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0963fffe73b0bd19c2785713e252e70a7c06a7f54c962d06114f46c8931c05. 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/UYM121600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64d6af5b8d456a8d4cc8eb0c2a9f3e070012f10560c8a95940216016f9bef0. 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/UYM121600651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f9ba8d0741f87c3f462396148e8e8c94e0fd5e649347784ce5af8dc8ca14c4. 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/QMBZ91630218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66930a4e105bcea1cc91b641dcfb01228d37bf91017a03620d87bc51b69e694c. 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/UYM121501378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d92a81f707e0d27b6d2d791e58bde4ad5f12f47b1cfa50764412220742f54c. 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/UYM121701326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b222d19066411601f768831b21755662e0587169d82be25682620d50f160a74. 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/UYM121501951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b83e9089556f3261dbe0acb6d725418080df1d37358df25f56d8d95079fe5. 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/UYM121501388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa22120ee03e6c2425d3a11b9ff7a212be189d42c2378531049a8f07d44e40de. 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/UYM121501382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc9d2aec49df22d0e53cada131dd96c99219e831658a08c7653689fd5021879. 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/UYM121502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0982461b0a3f982478725c9b09fc7623d7f7f2d54559f442b41d6085ea9b72f0. 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/UYM121602516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc6e13546e42a7cad9ea845f0befac4b38abd51ed6fa655f541a75247be1054. 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/UYM121501385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4aaed73a0be373d2b8ae943575a90722d4e038270716f5160f4715e37c6b47. 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/UYM121602510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a2d7f4b74f294196cc894756006a142b81826bf88869b1ce45335bb085e8fb. 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/UYM121501953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bcc1ed263d02d7667ec15b045b9d72415c5e22a1289fd806aabffa1ca285e2. 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/UYM121602001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fff7bd51532a873389825ce9e02a397a3c2681f316f69c4932280bcb14995e. 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/UYM121501548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbfa7c749b74bbbfe19e78431d07d1d51c73f96d3ab9f36c832d4ee8e3f37f6. 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/UYM121601155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7636972810060546efc13c351fe374d8ac48bdea84a8a16d0fe9b9c3c3d53d. 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/UYM121601152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f930f29c16846a2425ed1ee83d3c1dd21de8dfc1166af3b2e22df61b983680e. 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/UYM121601153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2daa30d542dd7b5562a1294ac1dac6d8a513d64ad2a3ed82428bb600c57744d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UYM121601151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484cfe3d33fdffa37331c4782b8a5610c45a254069fa086162f837f73a90206. 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/UYM121601156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336820eeeedd31e399b1edcfd3ce8e6baefc7ce9d86736ae2565844719ad0894. 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/UYM121602211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d73ec8414d68b14499c631d49052002f9888d5324eeebf59f8bc17ad74d9c6. 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/UYM121601154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2daa30d542dd7b5562a1294ac1dac6d8a513d64ad2a3ed82428bb600c57744d. 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/UYM121601151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7636972810060546efc13c351fe374d8ac48bdea84a8a16d0fe9b9c3c3d53d. 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/UYM121601152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f930f29c16846a2425ed1ee83d3c1dd21de8dfc1166af3b2e22df61b983680e. 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/UYM121601153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d73ec8414d68b14499c631d49052002f9888d5324eeebf59f8bc17ad74d9c6. 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/UYM121601154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbfa7c749b74bbbfe19e78431d07d1d51c73f96d3ab9f36c832d4ee8e3f37f6. 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/UYM121601155.