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 0x745463be9cd330e320c343dc0db8991b734382838606a44eae607ec814929d9b. 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/54547b74-d817-4055-8e70-937b4d4c76ca.json and https://artists.proofprofile.net/proofs/artist/54547b74-d817-4055-8e70-937b4d4c76ca.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 0x4a227c977ec8ad89a9042b9ba87c183f2de6b9005aeed222488aa1fc7fa9c795. 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/USUYG1441489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18fc95599eeb8b62ba68da57b2fd5317c0f479b69973c7fadc6300a4e5cb500. 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/USUYG1438002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5e7feab3de284282e890048cc461f56a8941a2cfd59766782d0092de799ac0. 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/USUYG1441490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9702a1c871bbf0b2699cb2187654371f391ce6ef09f2d902e79ab8721359fe3b. 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/USUYG1441491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd32c5f60fccc3b0579e5ddc48ebb430e8a9f9ea2ee0bb05071b0bd5dabb2706. 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/USUYG1441492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05f5a51065df310c616aabb27af1d4614a006b42efe0312777acd5cc2d82f8. 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/USUYG1441493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e62035419c9e010f11ccaf498e9fb2462f5446c75767c3b13aec8870555d83. 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/USUYG1441494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eb5da650b67a7e77e8f3216597c691fb832b1ccb9d642e9c933a1e60f708a9. 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/USUYG1441495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea19d94f0ee226ddde2b7723e9b0a74b9a514a056d5c7b646f0585a67972ad5. 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/USUYG1441496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470e5a06e5119f2103fe34a830b300a7ea3f721dbe5f9b2cc9f1bc5928fb536c. 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/QMSDU1700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e473b58b1d4c070d75e517bc2aa466a6ca371fb913b6a15420227ab8f044336. 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/QMSDU1700152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222fedab8254bb2890fa3bb18bc3e62e60e351327ae82db5e06abd2df33b429a. 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/QMSDU1700153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af8f80da33bedeb5863ef8aa62cc7fda1e58f8b974c0bd70c2db4b2bb5fe0ef. 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/QMSDU1700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b922910008ef37d20dea4bab020e2f69ac0460f0721ed75015354e1b661bd07. 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/QMSDU1700155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab28c6f35a63a3b99ba72600ba35acac78175890644f9ea764fdcabac3b6a6. 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/QMSDU1700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d23792a3925b4e20ef96a9348186c0c64e3713b3e8dddf57557b17a18e0609. 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/QMSDU1700157.
Hair Salon (with Cozz feat. G Perico & Reason)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d2739428a3d0177c39d4ba9fd9e18a4ab364e01c5d79246d40bf8ab39d17e1. 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/USUM72204297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68950f7c94025e7d47870f79428279c9553d91505471ba74f7cf521ddf639a1e. 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/TCADG1780197.
B.B.T. (feat. Trinidad James, ICECOLDBISHOP, G Perico & Fat Ron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc93fd4ccc01c8c26c56e335ec81c610eced0c157f43515eeaad17025100537. 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/USUYG1419401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85e17c82d68a83d9a91c31f194b75ef9f8ac771b75cec99c6d8587822c47c9b. 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/TCAFT2197932.