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 0xedf927b9c56d0d56eff9915a56bd0b3f801c9bc6c889031d8e1292d547a82767. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/856ae3d0-8599-445d-887f-2cadb95118d1.json and https://artists.proofprofile.net/proofs/artist/856ae3d0-8599-445d-887f-2cadb95118d1.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 0x73ed9ec4028d68038e2c0a9e09cccbdfd4343a8a84c49b8e588d57326ed2c924. 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/RUAGV2304108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db9c7c44602b34bff69ccb9639c22135b9f756180ae893a5d83e01a180f8105. 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/RUAGV2302855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f13f6d7f18d845f81f698fbe095483940a6106a624502a9142916135b0fa6f. 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/RUB632300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36fade53ff5854de748abc086ce7aece7d75008e3f458fad6cb802d55e48a7d. 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/RUA322300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe79664cc8a7b260376eca4777c2c606407a9397dd86d52ba1633eca5235dadf. 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/RUA322204206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669cca7b93e2017d578eb778a137a7057301b098e9c3d3fa062b34b2de24c202. 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/RUA322203847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54008ce63afcd6fd49d5afc3323f0a1e24115d67df3dc3db364cdd24db5dbf60. 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/RUA322202456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3423f671749f002e3512ca3a9bf4fd84561816d1a70a6483ea6275b501593d9e. 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/RUA322201488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afe1f57763ff5bd62c159678ec6b943fc9b18887af163362924750f2dc460da. 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/RUA322200975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33112d20f86ee92510c3974f0d42752d3ffb3519ad5b7c8d49d3040a6407f40a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ZZOPM2223406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d1fc4c3dcd0e6f60d79910482c9a01fc17f94c84105545faf4309fd01b550c. 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/QZHZ52193684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbc125c62e1811031e6d0982584e61ea47215b6d90655b00ee2938f677f192a. 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/QZHZ52113704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a11be0bd3b22e21552706b4ea8fb35aadbeaa35c6bfc0484581b1212d5465. 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/QM4TX2133652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc148d749a593a862b473e7ded45ead17cbc66795574b7283b07098321262f78c. 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/RUAGV2304075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67deab7096e3735f770e26a33ba9aa841df0320e4439897d77b30670ae2618fc. 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/RUAGV2303818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c26ac77ea995a660f3dab76f619ca99a4c0b4bed3b650ff151bbf03549ef69. 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/RUAGV2304076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d6f32aeca03daf45af61f22c4ba25f4f16080b8ccbea64ae021cf8d485e1c. 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/RUAGV2303819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3fe2feb30db2e4b6f9cc62f82ee98c250f6d1a2e929ca6ad0e14adec3e9400. 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/RUAGV2303594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189e9ed739d3e7e366cbac4d9c017ad9da3333d5c5fa46ca88ef720cfa272410. 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/RUAGV2303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcdc504ba20fe7addc5a6a87d15ad409470f205505b979bd90bc9157511ef7b. 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/RUAGV2304077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56f0de188bba6754e2b70fc5dacc5ea05f9deb1be1ec01af816872b332adba5. 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/RUAGV2304080.