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 0xe6826053c16029786bc566328b2b683d1ab796fbf9a5e836230ba4e570b2f10d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f9fb8fa-a249-4953-895f-5c99cdcce435.json and https://artists.proofprofile.net/proofs/artist/0f9fb8fa-a249-4953-895f-5c99cdcce435.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 0x842a856df4b4f702a32b5837f647b2bcf82bf43d4e321e2a07549da92f3d5235. 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/NLZ542301621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a56011ff12626f52d28ed31fba316639ea85027bdd97268b7730ed7cf6ceba. 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/USUS12300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54adb952f1252fb44d31c6d52ec7787f094a6cf60038fdc793f02f13d32872a8. 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/QZTLA2433955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32942d4f07736db620bd1fde397126a401a071ae66411ee31ee0006e8dae2040. 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/USUS12100423.
Afterparty (feat. Rich The Kid) - GATTÜSO Remix
Afterparty (feat. Rich The Kid) [The Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dbd71b782c170b5fb0463e7577a53370048123d83dffae6ba7d2bedb3f69a2. 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/NLZ542001920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abefe9fa9b7a53a5981cdfe17ab495d40664b8f57e3504644d47e978820bade. 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/NLW4L2000257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23a854dd6b6a1023a33438e0063803ed9a50de089dbcd4388a8f22b9e6f06eb. 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/USQX92100968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960e602db8a3a70b150cdc40ac76aed137a3fe41c8e3aefda3c4fdc5d633353. 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/NLUW22201507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4476f0aa380da869bfcc6d31a5ca2f4bb200992301f7522f342d065db5fac2c4. 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/NLUW22201508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32942d4f07736db620bd1fde397126a401a071ae66411ee31ee0006e8dae2040. 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/USUS12100423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac15f5d1d7fa52b2095a500b03968e61063ec27476a2d760eb8cf8a9bd6a19. 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/NLBW52100010.
Dollar Menu (feat. Dani Poppitt) - GATTÜSO Remix
Dollar Menu (feat. Dani Poppitt) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a2371a428946e79c6bdd54985a48cea85b5bca8bd262f552bdb3f80dd5972a. 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/USDM31916401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a4e8b446e261128269480e2e10894a3ee702d4db7644fa3a1626842c566b85. 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/USUS12000737.
Post Malone (feat. RANI) - GATTÜSO Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7dbd60d49e4fbe65925e40a6543677eb6e39d736ec2d20e542e7e6b88d3705. 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/NLZ541901276.
Post Malone (feat. RANI) [GATTÜSO Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7dbd60d49e4fbe65925e40a6543677eb6e39d736ec2d20e542e7e6b88d3705. 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/NLZ541901276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2bba7aa6e42e83cfff9e4fd7b0f112302f0d2207268d8c0449deed7be19910. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/AUCN31900373.
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 0x8b15d1e9140cb6749fb198a3a8c1c6e57fd2a7716f13bd693f75bc3d69ed6ddc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USUS12200081.