Notch may refer to: Notch (engineering), an indentation or slit in a material Nock (arrow), notch in the rearmost end of an arrow NOTCH (magazine), an Indian entertainment and lifestyle magazine N
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 0xf97482e99f8b960a317ea69de57199b25bc3f6311bb54d82b83cec0de3da9fb2. 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/a74b60e4-f7d1-47d3-9700-ce19f31efef8.json and https://artists.proofprofile.net/proofs/artist/a74b60e4-f7d1-47d3-9700-ce19f31efef8.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 0x7daa688dd5726638e8cd99cd793c70d394e52101152a4a29367ef02facca94ff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMVMM2011001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c844fa734e6d499810076f1862fc5179d26bc92e16e57e50fb53f731380310. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TW2511120.
Dale Pa'Tra (Back It Up) - DJ Kazzanova Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525187521a47866afd7ef0b4b5aab60c3550c0d8d241ba5ce1f1e772d084afe. 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/USUM70763453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a0f4a0ed02507cbb009473c4655f3961db16e859818e13f8fc52ce9d77ca96. 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/QMLD61408247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af671e8b131633a5c0224c86f1e20f2748c051c800811c924acde958babd873. 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/QMLD61408254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2292772d6293853b50a0a1bbd5be332ad913e9dbd2ab8e8e17a17f47df2214. 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/USUM70763446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b0189631bc7a227ace1126474105b8a5bc4e051a00e07828147f15520a5e1b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USASN1202068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bde885c34cc2fca97355c0ed139e079d1d13ca54671b4d77810b5a00fce505f. 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/USESL1222203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2804220e09b4d9a976597222be3a9693bc350b383e34384ea81f0fff8f12d5f8. 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/USESL1222205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c3f396145ae81938cea99db3df6a6178e48b6ece15d78dbe902730f3591b05. 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/USESL1222211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc3372513dd4d761f92dc9f032f7c4faf2fa056507dafdb69385d82a1a7f08. 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/USESL1222215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a015887d9dfa276bdff92ac2e69fff7eab46c26e0360305e0cfe5076fcb1b18. 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/USESL0508106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f482f5821d6685de293cb717ab24534aea914ba0a3073a616565d2ce9fdb5d. 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/COSO11400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9465d8257aa904abae03b893b90432a4c1809ccecd18a88cdf3c6dfb6f1e20. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACQ1684318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525187521a47866afd7ef0b4b5aab60c3550c0d8d241ba5ce1f1e772d084afe. 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/USUM70763453.
It's Never Enough (Nuff Love) (feat. Notch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa6d89ab8ddd477f98a24054dad8a79939ca48d3a3e830594c1869b9836131. 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/QZF931900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50752840e2f1d4d1ccb94343abd9fefb389254048ee6d8dca68bb49a222ff2d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAEM1950607.
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
Fiesta Animal (feat. Notch) - Commentary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4ed66662e62fd619db4ab736ab47b6bff4f7cbe46985d52674e5ed6cb9089c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/COSO11500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5261eb933aa8f7787fded9bbb81abc365fa16f7f1f9e8ec13e54d1e3f67939. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QMKXD1802414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01b7e7313b9dc6a465d45c47590be0a99a05c7563bc7f2ecb5887aa3ef0a88. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JMA271455740.