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 0xf843156661e9daf636f3b2707162d009df1fb71264eae7ff6c05b466ec384757. 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/c782bfba-a002-4cf6-bb6e-2813c97ec904.json and https://artists.proofprofile.net/proofs/artist/c782bfba-a002-4cf6-bb6e-2813c97ec904.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 0xf9df84c6ac0b82d5548d852eec699e74aa8f1d064a81a5b5b862ada1124be194. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN62249918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f93580fde6c8934eeb353d6cd5c8dc04a29597b6e9bfce3862948e002bae2c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6Q2203137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df33ed828f123273af345dec3849c4e178998f2628f1826212fd82f2c76aa6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB72206346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6e8839e6eb145ec722a2e1508e96bc1e904d23c016e75627853bed6a1f01a7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTB42290813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc3cb49cfff31e7f7b910158afa566bd8ace6771b892fd59f85afe775a6e6b. 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/QZFZ32301709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f2f67b322d00f86d6e8d252ba09317291c0d1c16e99b48eba83da39a5024ae. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52332293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd0de11c5f5722d267243432c6377f98d47d74c43d0f132ebc0f34e475fd6ae. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82392361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5580282d82aa58b27a1bcbf95651157a3fce4d5e529b0c83cf5f337a07a1dca7. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZK6F2313958.
Hustle & Grind (Slowed and Chopped version)
Hustle & Grind - Slowed and Chopped version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7647061e464bcdae8d8bbef2d0d1818d09a71bf7b671a3a94f3f5cc4eb0f9ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6F2315931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119696e0c172276a94fd231f6c1fc58077512c2b8149986a5e6607081d283209. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6F2317500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ddbea69c9fde078ecb3476e3ed267add9541c1cc473cefbfa7f2480020cb3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWQ2358839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c28c892107109ed9aba3ae0430cfcf1e52902f1207a0d865eb400396b09718. 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/QZTAT2316751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3574d933e68b22547aaaf86e55deca988cc003b50571f716fbd332fd65b5878. 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/QZTBC2328674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b49adbd52e340b302c14a26c41213c01f54e9fa1cd1d254caa7f04c2a48c39. 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/QZWFQ2343093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495101b22008a3f5a1787824e79e278dfa9ad832ea6c38083a6aeea566bfdd4e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZES72473741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb989e9e1a7f28c2424c318ffa66d26f725110e20460268c880927139016a5e0b. 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/QZK6J2424525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026e7dcd29a5d19cd81b1cb2f97248f6820851434aa8044dd7e8291f60d972cd. 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/QZWFH2423042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d76a28a0084b4362806d8db0146403bad865634f845deaed3f30f2b68c3d277. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEP2587564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c05f4e8d5298b84222a8d4c38c247e981fd48cfc21902609fd3ec48c40246. 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/QZK6F2460417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea390ba4afde40c90547b365a8264d6873499befe3b1d9bfce747fdfa5a06c86. 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/QZK6F2460419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5026f944f98d672a86411ed382a8abfc4e4bb9983c11d3bf11fccbfea2e514a. 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/AUGBT2462152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea374f2d9b3102b7484094da22ba952d033702aa2e09a527cf8bcf227d44a27. 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/QZRP52406134.