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 0x6547e68f4791de14f42e3d360161883aa9f053e9cf1fa1b40de84c1518807efd. 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/b4afc48c-245f-46c1-853c-4dd08601941f.json and https://artists.proofprofile.net/proofs/artist/b4afc48c-245f-46c1-853c-4dd08601941f.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 0xea62ceea74f7e96863da90da1941da1e066c0d13c77c966bed76a0320fa1888b. 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/US3DF2436504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cc4904f62a812ae5ef8b3581c2974b1a8de0987c6364e5676291770b385d7c. 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/BC66P2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7adf9ad2ffc49bc4ebe1ec8e05e9d10117ec565b192f56b144cf5a4425964d. 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/GXD7V2470908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba8585e11bc66e0f62e8e76920a176058385c28679b52df91f6ee74e67b1011. 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/BK1P72400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c9774da2d55f9b0d8f36a2bcae23d48692a2f0478011a14b43ea886ab31d0. 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/GXD7V2323473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed61b96a2162c016cb5e9c80d6807d080fe7e2fd4ef15d38f52359b4d3cfa593. 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/US3DF2458720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe855b5d4ee3021211d85f5e07a3976ac5cef231e79747e4f18273b850989dcf9. 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/BXKG22400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38b80f3e5b89f08d2e35d6668f4814e121777ef3b59a0e18514b9adc9d6aafb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BC66P2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b4f4153427e46db1f5dea020cc740ceca4bd23b4c647f22fe1a41b14ec8688. 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/SGB502439085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00775d096964dbb5e1b4f8b2fccd2a9c61452690308156902bfb31d60fdad5. 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/GXBAV2382026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c73ba78166fae8a6e5323ad3e049fd8ca67e2a0cc76c448298d49f0bbf0f25. 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/BC66P2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a67009107e9ddb087ae8c5ce08f18d78a852e9f00910c8ec9d8c0c7932eea6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX4IU2353576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f687ebc8efd60c6d55ee9e79924ae634aafd8ef1c16d7c965a1e52473204740. 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/BC66P2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f6811d3a9f0de46e8f313a3fb4a32c2c36fd3728672e645b7b4a9c4469a8fb. 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/BC66P2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaedc802edbfb71aaad927d10281644c413d8f3c07a974b1d9c38e9c3933abb2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC66P2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd158185a6a1d31eaea5b3ecfaf42e83a689115814d806df358cdf63133018c0. 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/BC66P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeff372913621cac4325ccc7c093ddb75b139a253840c6ae603d14bfb808df28. 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/BC66P2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe939b0ac51343d98b5b5ac894cbd861cb679ed4d1dab687a77882c25e0ca6b4. 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/BC66P2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb2b3db3989d6ba73d481d0a4f5fd27ce576fc4bc9c220da1bbf90119e5a634. 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/BC66P2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158d202ca54c28ea29181bcb12eda093381c2334755c29415ebdde5f81138df. 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/BXTB12400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5148d113ffc67b5487ff35b291af044a5724c2ab1c6505b7791f61845023c2a3. 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/BKTKU2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c2086798fa29cf09f8276831e52aa6f8520da131858f81dd8053fb66eab125. 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/BKTKU2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726420c91481647b81a7ac473996d456648a8daa7972cb411e81f17b20ebb41c. 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/BK1P72400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9432e7df73c7d5cebd46e2b03a9c115e1ee2e4082e46bf528ba15b4fd51b7df. 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/AEA3A2253448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e327347aa681e90956f6b5cbdee80541c35c5e3e7477853c69ac54816c457c. 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/BK1P72400161.