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 0x7e8e94fbb65b7e11361061caa8ed95ec3f2a42475dea4e8930435feea507b36e. 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/da593366-1eea-4491-a6e3-2f29172e9558.json and https://artists.proofprofile.net/proofs/artist/da593366-1eea-4491-a6e3-2f29172e9558.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 0x50653ddb92c9c3c31ce3c37c98527092e7743827411f80580179d30f80ca276c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X41890782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf1f9b95da86ec02840351594bcffab07f2888fd39f341ed90a60ce175b2af. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR96X1806208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825c6c82731787403ffa24f9b71355cb4556e38c42972ed36da5d80a13d061f4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:05Z), 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/FR96X1865398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ade5171865f55f6d96ba67b83e1ecde4e330ddb07c9fe9f5c9885c35d3f8dbd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201935072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a39380d1799378d763de369bb809e99fab8a96ee1ba15018bf88d2192a21e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA052026193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec83401c92cf8838c82fecb7e6942e7a54036bee8217adba547f4468a8dc7a5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X42201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad5be4a011459dc8b2f47de4a162e59f0f7550c48f15d59b1bcec659972f77. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:11:21Z), 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/FR2X42201161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec83401c92cf8838c82fecb7e6942e7a54036bee8217adba547f4468a8dc7a5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:37Z), 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/FR2X42201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd636f923a5ee243e737a0df15add55924276ac432d5a4404a40a95e57caf9e. 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/DGA0R2341797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5be5bc2edfc1ae8f948e767ad88f2cb16a66eff9c5b6ec3740f94375572bd4a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DGA0R2341794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd636f923a5ee243e737a0df15add55924276ac432d5a4404a40a95e57caf9e. 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/DGA0R2341797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863d631b06b510e9d684f3cb619f8ac4542a30c802f2a874a529a9e28d5c9a02. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DGA0R2341806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72e67735a208e8592d9bced621885c30674793da2b507a69577266878ba71d. 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/FR9W12365706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5146465bb55a480744fc69b991a1f3a0cdc96730402eb52ada0d8b6442e9e38c. 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/FR9W12135280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72e67735a208e8592d9bced621885c30674793da2b507a69577266878ba71d. 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/FR9W12365706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97c3d049e5d56f8b074303fd7c7c13914ab8bef32d9131e0a117398b2354789. 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/FRX452402036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea366c480775119021c530a2bb9b3cde307ec3ad73850d3de2c0af97ce38b2. 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/FRUM72301161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39508003b06c17b9146293386f6e5f5dcbe3fa36a05408a210f646028fd6a939. 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/FRUM72100977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82bba992069900ccc9d21526d3fd0e1bd075b55ee8dc6ea74d4d0130979e76. 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/FRX202227082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f5e77753cc24c9b689120fa410086a5fd2bec154b0279132898ad04c9a439. 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/FRX202227100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82bba992069900ccc9d21526d3fd0e1bd075b55ee8dc6ea74d4d0130979e76. 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/FRX202227082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f5e77753cc24c9b689120fa410086a5fd2bec154b0279132898ad04c9a439. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:41:10Z), 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/FRX202227100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f6ed80f4df2db4feae421a088fd44d9398c481fd9f47bf3fe3cbfb9c04555. 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/TCAHK2321227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f5e77753cc24c9b689120fa410086a5fd2bec154b0279132898ad04c9a439. 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/FRX202227100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4f24616e27ee2eb43ef063fc73ca0bd14a79538cf8f80f646f8a31f68eaf10. 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/FR9W12468677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39508003b06c17b9146293386f6e5f5dcbe3fa36a05408a210f646028fd6a939. 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/FRUM72100977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f6ed80f4df2db4feae421a088fd44d9398c481fd9f47bf3fe3cbfb9c04555. 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/TCAHK2321227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0e3f275ea288c7dc83380c6c1018a2d07df460a0c7336de797d5ba30b02987. 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/TCAHM2349122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2b7aaca4039f1eacbae6c859be1865ebc2ce0f4c41736550f5fecc27e64c67. 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/TCAHM2349150.