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 0xec5b7179cfa7456e57dc86102e30c666533c1b9a4172ebfacfd541434846171b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de54db5a-5050-4395-9b40-d09ec3c7e325.json and https://artists.proofprofile.net/proofs/artist/de54db5a-5050-4395-9b40-d09ec3c7e325.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 0xf130ad218825000adf4567f824142beebc5b9af5b66182b286218012bb96f136. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TR7251900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14739189801951e95d065667fc5b4c9c1ab0b09db9e34ee7cc9cb8728129bc4e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:31Z), 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/FRX452076364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910bae8bb8f709ac1ad79e474988466a376535b04c6658002fec8d1701e8ae4b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA62139086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e3684615ae7199653ec1699fd5a274258b05c4ea8790d95d08f91d2617f682. 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/QMDA62157753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667c59337e4e6aaefec57401a96db01872259efd108a3219006102c1fc17895b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2281355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e69ddbc96b52cd16eccce9e74f1351feec3241480ecd170ea7b793dc5b4c7d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:43Z), 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/QM4TW2281362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eca9e6d67f46f22e1787523c10e753ce4c04d88de4dc7b6612f4d4f26e3def. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TW2281364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e915ab54d46b6ff4e2a7f414fc9ab8c8de40e7919f8cca0525494c429abe7f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P42221553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075e4278e38049a3698e80285b4b94b9195bd8c25a293b6c5a534848b022e81b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QMFME2238269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744ae5252cadfbcdf05723a170e5c9da9694dfef4d236aea4133f7784d04640d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:35:19Z), 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/QMFME2238765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2bdf3c74811d2f689a8aabe5ddd2afc40c85e443cdc80969fd22503c98219c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX872362533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde36432d85f331edd0525fb54dad87552d58d4e06528d17977dcb173c7c08514. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TRADS2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9525ac372890d21c3e9a4c9ba74aaceb514c4f50f8fc1c8873d31567dc76e1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRADS2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc44f4cd71e32bf7af8465dd925d5120c7db9d3989987bd277694a3fda8dfcf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:43Z), 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/TRADS2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11687bf988e0918d50f8c26626a4bd0ef7c91a9a271451aa4317a2264c470cdc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRADS2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ad636e441bf8af3158b8869ca8b9c20767e4f136c6b2b5d41fd7ac9776ebb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TRBMN2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d1ba661a11c74f1b0e2dcdec301d6c7971ee7e5f5860e3661144d40ef7870a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TRBMN2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7bc88813f1adfe936bb893b42aaa788e349c3021cffd88c3d9d4cbc590df45. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TRBMN2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e71b7b745d277d111ecebcef835cdd66f06915deaaadf31f70d7c47409b8e1c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:45:04Z), 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/TRBMN2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b714145eda74d427cd4b6c00363e4af6cc076bbdf5db76e67065c1267c33421. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TRBMN2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988b0bb1c6f451ca23197c165e421fdc9fa80459f1f0f260b7665c7614c3a09. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA092441764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07e7d32ca2074333dfd502e87d6a41972599ee044ce06c61cb1118a8b77bf5. 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/TRUM72100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07e7d32ca2074333dfd502e87d6a41972599ee044ce06c61cb1118a8b77bf5. 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/TRUM72100041.