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 0x79f3f81af0768ef52e1aaf39fff5e6efa4f89ac2889062d54ad18c4b9777227d. 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/4a5bf166-d4c6-4fdc-92b6-d73223b96175.json and https://artists.proofprofile.net/proofs/artist/4a5bf166-d4c6-4fdc-92b6-d73223b96175.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 0xd36a1902c36171403939b32137f117006050f52294a17a63f62535b00fd9a912. 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/FRIDO2314317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c9b8c4efccaa92553d310754ddd82fe666a8fe4738c1b7d6d8b079c2610519. 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/FRIDO2313664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ffa986cb7f692282488e3677298e53039eb9df2cefa6100603c8e15bd9440. 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/FRIDO2412915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a47bd29c1c002d4ab88d4699f5764a119466da4901a15de902cab281cf982a. 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/FRIDO2414593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafce1a385ec04e0c384fe428b016b959c197900d65b9bf0b70c1c78623048987. 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/FRIDO2411401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f25d03f3599dd9ebf062d2ff2b8364f4817c0735bf6e691357480e011d55d1. 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/FR9W12203488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0e00e338cecb844d0a4aeb4f1c5c590f258b64dea1abcd6014cdba9969b374. 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/FR9W12203487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3723fe63d0cc4a69ed052b156181949de758f4da86ddc93f71bef8940abefeaf. 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/FRIDO2211361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a09966e51241076a7cfb6610268dd795814b635f211271748362c97bf1bc57. 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/FR9W12203490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab7812eb891fcdaa6368a940f7164dd3bd29a85d07088a765e19ce9eb321fbb. 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/FR9W12204389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3723fe63d0cc4a69ed052b156181949de758f4da86ddc93f71bef8940abefeaf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRIDO2211361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a1902c36171403939b32137f117006050f52294a17a63f62535b00fd9a912. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRIDO2314317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0e00e338cecb844d0a4aeb4f1c5c590f258b64dea1abcd6014cdba9969b374. 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/FR9W12203487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a09966e51241076a7cfb6610268dd795814b635f211271748362c97bf1bc57. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12203490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab7812eb891fcdaa6368a940f7164dd3bd29a85d07088a765e19ce9eb321fbb. 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/FR9W12204389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c9b8c4efccaa92553d310754ddd82fe666a8fe4738c1b7d6d8b079c2610519. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRIDO2313664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafce1a385ec04e0c384fe428b016b959c197900d65b9bf0b70c1c78623048987. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRIDO2411401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a47bd29c1c002d4ab88d4699f5764a119466da4901a15de902cab281cf982a. 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/FRIDO2414593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f25d03f3599dd9ebf062d2ff2b8364f4817c0735bf6e691357480e011d55d1. 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/FR9W12203488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331bd2685cf73e908e120c609650bbc548bb4802406b32fb277518d28dd4cf2. 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/FRIDO2211241.