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 0x8d5b128bf8f9652eb90540072b30ca0b20b792d2a9343501111f807a2ec4e7f9. 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/fd05f3b0-76f2-490a-898b-1930234c547d.json and https://artists.proofprofile.net/proofs/artist/fd05f3b0-76f2-490a-898b-1930234c547d.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 0xea3d18e3b574419e9b23c7cb78125389d60911e0da642f170fa5ea44e36fb71d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BRVLS9300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54fb61f797b6f51dc07c6d5924c999817097b6d63a3e9b802240662848b6731. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRVLS9300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32115ae002bd240105d34a9de0a29ed49ebf1b5c981426b32d950840f04e32ee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRVLS9300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420a46171fb9ae9eaa604e88ff0819762a401d8b3d22763faf327d24c27f2df4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BRVLS9300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64747c659db569269561ab84d6d1fa1b1e6466615dd8057fc057022f6c1e98f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BRVLS9300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe325f3223617e44b129fb8be1f1e830658e35b7c3a2d48ebbbeb987e2f91396c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRVLS9300511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9a5e85a7a9309f758768a01c2deac007a5fcc12fef6d8f85425fc8a23ec73. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BRWMB9700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b71087df67db9981c24a1289ac96ac3ceba9456bdb6318662e4dc0ac10388. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BRWMB9801551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00203af2b57e8f0ee9037f1c0010970d6e221ed93954ff3bdc98ebfe23073b7a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRWMB9705909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8843e2e9a42cb5d0a88bab851bd5e3ddb2977235df12ffbc2876f1f8e336a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BRWMB9801586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c7fed6715232f088508a3fc9ccf3e58bd0db89f06890fc34d01af649a6073. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRWMB9801587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1bef16625c04ad3a40413854a128befba03030ec3ee7aff66decffea0d97a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRWMB9801589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e64eb4afe8b982823c5758f72009311e6a27ae0126601d2d9512277a38cfe1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/BRVLS9500553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a33ecb9a04f9ce948f7c59484ca8615e7e6b25f4d6d80603a5faf966a3c8b0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRVLS9500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420a46171fb9ae9eaa604e88ff0819762a401d8b3d22763faf327d24c27f2df4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/BRVLS9300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54fb61f797b6f51dc07c6d5924c999817097b6d63a3e9b802240662848b6731. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRVLS9300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab390771021ca5c8be2db2ab45f2da67b2391948739f325487e2ebf957037eb. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRVLS9300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77405320c188402c8bd2296031fd5dbab30145459607aa42c6bc79374c0d6cef. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BRVLS9300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb626c49bf119d91fd9c7310a8ac0abd2ac2846cb14a5b9dde243e946d69450e5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRVLS9300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab3e3946924ec530951fcdbf07b88f352503db8a65237df5d4085056060df1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRVLS9300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b7c9d7de05b9be7213136b838b43ec6564cf6da993d6e8f3397f5bd2d021d9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRVLS9300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c38a81c61d1c0b42860e5f9f3996b377b892132d2e93df9bc84202031ab9ed. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BRVLS9600651.
Felicidade / Música incidental: Prenda minha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29529490534295e1bf28e59104cd649543d99fd27c459c4cfd24783c68f6453. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRWMB0202319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3e30e0041c0140e6c99af6d81bcbb1c78c8fbe49e91f211b425440dd47b942. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRWMB9705756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c7fed6715232f088508a3fc9ccf3e58bd0db89f06890fc34d01af649a6073. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/BRWMB9801587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b2de817db544258d61cbce9067dc2331b1f2b55ca5389f69e6c1f1b56f9a7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/BRWMB9801544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4df3a77db8b7674705accf96382ea54efb8fcf53a4a8dc9a0eafce9f5701e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BRWMB9801550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b966ada455aa9368c2765b57f86462fcc8f3191863632dbc1434612bada0a35. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRWMB9705787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a3daac89de07d1717b5b3a4046e44f91ff9245687d17ac251014b968ce9792. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRWMB9800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd420df02988a34f8502f99eec62984b0fe64fb14e9ae9860258617754425d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRNYC1000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45646dad1852033b1ad55dc3276c3aff210a9a928a351d4cd83830b242e6e9d9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRNYC1000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4df3a77db8b7674705accf96382ea54efb8fcf53a4a8dc9a0eafce9f5701e. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BRWMB9801550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b2de817db544258d61cbce9067dc2331b1f2b55ca5389f69e6c1f1b56f9a7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRWMB9801544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b71087df67db9981c24a1289ac96ac3ceba9456bdb6318662e4dc0ac10388. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRWMB9801551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b966ada455aa9368c2765b57f86462fcc8f3191863632dbc1434612bada0a35. 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/BRWMB9705787.