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 0x751ed506ce346eb5b1e67434ee4df3a9876f07df818ee2b7f59700f90de6c7d5. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/189d23f8-eb32-4eca-bc59-4e2cf2d7c1f2.json and https://artists.proofprofile.net/proofs/artist/189d23f8-eb32-4eca-bc59-4e2cf2d7c1f2.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 0x1be294006f2e8e067393be3eece9b4f3e5d1d9d31c8100889ac10d71dc6a0180. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBEYE1700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f21faa87da179dfc20c42ff0b08e272ca298675a7c1cea36e7b508b8ccd4ab. 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/GBEYE1700063.
Golden Lounge 2 (Compiled by Henri Kohn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e805b774a3d37aa9599bc2d74d0f036785a6a4d3da4c81edf29bd9544c1d6. 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/BEB041400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9355755c43ba9916ea58612e8179f6dea715a46cbb4f2bcd86ab4bbadfae413f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBSWG1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74afe4a885a2d0d499e0d5b124ef5fb6dc6503363baf320a5911eaf55bcf9da9. 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/DEU231400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966d544433c2cb8b5157cddd60f2c3267d9ae0e86b2ab80c04bc7258c6652551. 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/USOM80306702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd4cae9b1641cc60525c28128474c91cb9b5f4b6347da6060b755485e026328. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEU231400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf7d592c0fa299b65a9db458e3c56c4c682464d3339f2b81f951637384ded7f. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBZEZ1400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13af5204178297af64c6f1502744909a20f4b95aa7ec7963585990f3cd62a9. 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/GBMEF1400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f44ce71bebc0d25f559eb7cb6ea0c6ff21f4493dffcf8e1afbaaed7639eceb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBEYE1400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85b170d59bf71b6d5304d0d49795c49c75efb07fdbdc8a3f48dec76a786cbe. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBKQU2209008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1f836addd01da0cec500340d80ed558023c1b0711ce0c39ea3d5a0ead85f0d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBKQU2209013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0c9932ab41c4ab8e847369c68daa486a889c39cbe6eb49e4d5cf2ba214d1d1. 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/GBJTR2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e2a09083660b5f51ce2c84196b7abdc15cc6ab6f7c7847dc7e55c877a7bd7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM6MZ2079448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d407764589f1511af6784c825baf00c9204f2e33828f89d3ea7f03656b14dc. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM6MZ2079446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9e4163293ed96cabaebf4cd153f7056322d9321793d135adf877d5b52d00eb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QM6MZ2079450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e88a5df05d6a792227fca0780f8abaaf002287aac4e67eb7621ee7413f308e. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBKQU2014183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc233019b8d5fc775e4df9e5b41fac9c9fea386aa51896cb558c8307cdd7cf36d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBKQU1968521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0125cda2455da1d53b10e6f125a5e2af4180345375505ca3e62df2bab87a8e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKQU1758206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f2c04f74c75d48874633c4b27da68ca16034e1fdc152af30742b0ae65e3274. 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/GBEYE1400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b62adc6eed080c00ca5de018a3becab1abe9f68221e61cf8bd6d145dbb25d16. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/UKACT1715963.
Legend Of The Space Bronco - Alkalino Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7923889dd3a0667bd9ba6351ed4b2ca343ff4d2953d849fe78ef8073e4454784. 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/NLHR21600412.