Northland may refer to: Corporations Northland Organic Foods Corporation, headquartered in Saint Paul, Minnesota Northland Resources, a mining business Northland Communications, an American cable
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 0x671e56f71a7fcea107263486f618435c862119e7a128996c12c774e536a0995d. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a5acecb-c1b0-425c-ad96-bf05e4a4bcba.json and https://artists.proofprofile.net/proofs/artist/0a5acecb-c1b0-425c-ad96-bf05e4a4bcba.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 0xee73e5e38b49e35e7b59a6a32b81c7576d8e741d441a484a18e69dca89bb961e. 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/QM6MZ1446102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a6914ae72af5e455baecca5745ad33475cd0a25d2d05feac8b0f3935a2daca. 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/QM6MZ1446103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b0b040186d20f79ade22809f50b44a3ba4d61ee9fb93f07c5f2417ccbe5ad3. 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/QM6MZ1446104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389102a295a29b8aa67d99d6e387c06470e9bb082577deeb64c613d66e378a01. 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/QM6MZ1446105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0689e00bf6af5c02b3d8460e1fedc9c02fe92eba03385817a6ab0d3058a9922. 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/QM6MZ1446106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a08406305a89fe262805d4963b02079e39835e482aea5c496ba31ff8ccd6bab. 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/QM6MZ1446107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5e974ef2b00e4e221c37fd36a262130b5cd7515293f6e610ffdf4091feea49. 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/QM6MZ1446108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d22822f0a8f3cc9d24d0bce2a2cfe6723b9c6b268de6b4cea1bfaaa7181be. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6MZ1446109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788168bda230bc6a63f13d23eedcea263f817ba02803ba7f99a44f5b46f036fc. 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/QM6MZ1446110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad34608137c19dd26a90907c85145228cec3022d014e9a2934d70b185b17af6c. 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/QM6MZ1446111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae08ed78fb7bde1ed6482e61ac98e0c54700fc1c724676d4a4f9f35bf4d6f17e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6MZ1446112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898dc1ea5130449311749870ffa90ba72742a4c3fd1ea2c6beda177f654c4ec9. 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/QM6MZ2352921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1daf812f79456cd8f6336e7322efb39536077a77b7eb1c724a6c5fee478344. 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/QM6MZ2352922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc6263e54f5718727aef80c4a2b169e24006e0e5ce0bc79a78867b36e040b4b. 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/QM6MZ2352923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef28e61bdd8dc951d90e31c8d0a8058f6603445699ea2ddcac021135b7c3282c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM6MZ2352924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696c7120bcbcb8a421713871d457ff7d9c0c7aa2de53029a34f59669365af71d. 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/QM6MZ2352925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3dd50619eb2a9e238517ec16a6db4b12fb6acf6a29fdca64368d1b180a31f0. 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/QM6MZ2352926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aebb382de8f082581aff3745b4585702fa26a60fc10e807bd2a5cf57e6ceaa8. 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/QM6MZ2352927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e6c123f03ae429836c46a002af456f01e778645464b0eccbdda1f7234e245. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM6MZ2352928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf29c4ce34bbc7eae450ec882a0921e7ad71d5bf0dc5f364b0cf59d5e9c973ad. 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/QM6MZ2352929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8217e0ef6024f2d96607a30a6cf6a567f22a5a39d6a72ac714ead9e42a3cef3. 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/QM6MZ2352930.