Fell (from , "mountain → landscape over the tree line"; , , ) is a high and barren landscape feature, such as a mountain or moor-covered hill, often mountain landscape over the tree line, etc. The te
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 0x1f336ea7a5806c2800c71404b332490eb7388b8206683b7748bb54db31750396. 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/a8f1fdfd-2922-4a2c-83cb-740c59765ff1.json and https://artists.proofprofile.net/proofs/artist/a8f1fdfd-2922-4a2c-83cb-740c59765ff1.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 0x20b9c666c8afbee42855e1a8bba16200f72519b6dc17e98a266af2514e9b1825. 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/BCHY22200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf5e79c5c06ac61a26da93b0a352ea9be4add0c0f1ea9e36b3068514a31a4f6. 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/BC0UT2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3713ba2458e80da4bb625c3001fa834e72f7ae9d5c566ee712a9cf3fde2d3bc2. 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/BCHY22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83909104b3040ec806dfe7dc5fdc743214600402ecd5e367ec804456e2af9a3. 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/BCHY22200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c440493218c8d8d6366796709864e30f7e090c3930e2e5c5430614fc5220974. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BCHY22200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff78becfa7e01f0f61b5aa7aca458635f4ca31740c0895dac42ce7708e47ea0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BCHY22200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343c243e503f5aa5e8aef632b04e1ee91d8fff25a218acf4cb7c98e27adb47f4. 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/BCHY22200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eb303d2e14dcb616b7d58afc42989a2341c9a66dc84a0054150c59fcf8b8f6. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BCQNE2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81b39e7b2fafe955f0d44f035c15e7083de1a865911ae79b5f1844bc5a35b8a. 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/BCHY22200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139a25a7495575e60f930eebecd6288513a14722a432c2f5d57b0baaba023bc1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCHY22300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce6a30863f5f52277023b8ca5fa3e74d7857efb5b5f67381b07dc508987bc77. 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/BCHY22300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3713ba2458e80da4bb625c3001fa834e72f7ae9d5c566ee712a9cf3fde2d3bc2. 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/BCHY22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458fb1b5a414d5db089edb13c8a3997959968ef1bd5ae304ccdf80c5779cce24. 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/BCHY22300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42dc2d163ee027b7d2925a0965f277704c57a193a73e6794cc6799371a5ec94. 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/BX0PX2400001.