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 0x5027892333a5d84511ab54200686964ee5b1fee96286284592492852055c09c3. 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/932f2c98-2b00-471a-8478-56bf39b1ca80.json and https://artists.proofprofile.net/proofs/artist/932f2c98-2b00-471a-8478-56bf39b1ca80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When She Flashes Her Smile On Me / Whisker Train
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 0xa1c49960152c4829b6e5c5ec453db716a094cc4fce6583785b18d856a739c6d0. 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/GB9TP1800794.
Feelings of Unreality (Small Pond Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daaa99031eb7ac41c0d0ff0c84ea6c0c76976a31857f8a142a8ff6aace69c7c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB9TP1901748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072a4ef1fee78ba5601fbbd8312b4b0c533ed4deface99db3dd3cb82ae5b124e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:55Z), 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/GB9TP2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ef47e92629d256cad065bf5718255989dea160164d170f36bd7a92094ce4a2. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GB9TP2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30cd8d006972e1affd9229b9a1db57ca8fb788577c92912b8c8381ef9ed0328. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GB9TP2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46872a94a7d5883ce2ab211a1835a70df2c8e7c7e8adc51d2ab32bff8946b615. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GB9TP2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd758421b763a4f20861e417819b89b5e2ea57dd4162da40b28dffa66b06898db. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/GB9TP1901074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c7320e1d06b3070f99dc61d2bb1769a8c706d67838ddc4391c8d8bac870fa9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GB9TP2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce210a2a802e222c8398fa287ae343189da3d5066afd876d0e412a84e6f31f4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GB9TP2001450.
All The Things You Left Behind (Varsity Star Remix)
All the Things You Left Behind (Varsity Star Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5650b017ff9a6365d7e060e52f44e54ed8824011ba9db3127063808a03e55a5a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UK9AV2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52b6378525124633cb2a901456a7da3bf11aad7bf48835aa6c5a65ef6f64f3e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UK9AV2202258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d9e07ab2bb3dc3ed791f6991b39f1695e87bb8ac67828f4cdd10258add8199. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/UK9AV2202257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990108afe81cd08fdd789a47307b08a8cbe93b29e15735a9c3d68508ceca1320. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/UK9AV2202259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415c685f664de5aa001b1f7492d33dc0804e7f5fe913f4c5a6d40cb2ce058fde. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/UK9AV2303338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960f987b82aab20954e367e5d97ef47669bdd68ddf83d0eb3397d66658372f17. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UK9AV2501220.
Tokeida Outlaw's Floozy & Meadowsweet Happy Ishka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43361619be5126bbf105b801430a31b4b44ce7a0d74ed8a94d7eef3685782371. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UK9AV2501219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960f987b82aab20954e367e5d97ef47669bdd68ddf83d0eb3397d66658372f17. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK9AV2501220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b9028afc1f6177ea5b3ab5aa3bf8421ccf3dd20ea4da1a85d4433640c87926. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/UK9AV2501221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5ca90ab8a8ff7354290022dd047df07dac423ef6143c14726dc421e21b3dc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UK9AV2501222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c46a2bf0e3f7bc68aaed9bec260afa8d8b2998db11c246cb2a04a11f30fdd22. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/UK9AV2501216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43361619be5126bbf105b801430a31b4b44ce7a0d74ed8a94d7eef3685782371. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK9AV2501219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c900ca9c0c17c94ae897258099fec82bf265d90758e21e5704418b363d6c32. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UK9AV2501217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beece0ea6190afde17afd163f43d0edc3e3735f68e493a8d61081485f5c2dc6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UK9AV2501218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebad9589e6314dddd3bbb2ae807c6bc8ce9848db4bebe64e6ea7653054f3f5f. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/UK9AV2502444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3adf45ff6868d927d0701b5a8d2120c11a2abe888da422ad6c7e85db37369b. 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/UK9AV2301583.