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 0x9f80ff41e32fd292781a6411885f6140a4a4a4872e3f24ce7dfa99d7b68a5317. 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/d9cd08c3-0cd3-455a-a7a0-440cf9a897fc.json and https://artists.proofprofile.net/proofs/artist/d9cd08c3-0cd3-455a-a7a0-440cf9a897fc.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 0xcfe704eb2075796fc37272553ff429fff153f70de7578d7343dbe58c9b580da3. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/ITVKL2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472852b48b85cd30b46be59cc2c9091a75708bab6bc93078de8746070ca5c0ce. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ITVKL2000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61455cbead1c1652808b667e1efe610073b1aff3d0f1dd56f57782793e4a6377. 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/ITVKL2000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aa94ed4052d3d2d384d2b3ace7bca50ef45be542f20eefdba674c6d0dd4d8c. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ITVKL2100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d90ef822422d20a194bd4749b38a3994588250a6f1cd0e5dfb8d4f1219e7f6a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ITVKL2100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490997f692bedc79d458dd73a0aae4752315666fc70c6cb0f17dfa810d7b5299. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:24:43Z), 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/ITVKL2100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fb52ce2b195ca9d022eaae764dfeb1414ad4b75bafbe46472c0514eb42b39c. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/ITVKL2100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e3c26e0ac492cb1d9c6c3a80a8cdca1217fef15b0caf9b31dc0c38a64ef1e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITVKL2200594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6933a94302cb453ec2a0fd0f53c4eb7cb5bd1a82e7b7d45b6be84601d6d549a8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/ITVKL2200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7aa5dc489521b4bed6ec1bedcad51ca85a877ca60afa14706d9760dd716391. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITVKL2200596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f27419f36b247ce8143c77c405a2416b401187b43a789062b0c6f6cef6f725. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITVKL2200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba445493bc79a7a53261e5c4f05d8494eaa11a0f49fc33f54e26ecd287e03d4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITVKL2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf17204d662da8be5d1fa017e7f8dab59d082dc94c8dcaf19bc369d434b0c79. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:30:05Z), 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/ITVKL2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd4062ebb4376dac23671d3498e0b2776648690a534b6ecf0c5da5384ce3eb7. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/ITVKL2400005.
NUN O SAJE (feat. Random, Peppe Soks, O'Tsunami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04bb980f6736d6cca2370344712076f7423f7fece38fe7976b3959568db22cd. 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/ITVU12500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2351019500700ad71fb703892b9b1346e903e1480a8d4d0709663ea33ea2a3. 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/ITVU12500032.
SUD MOST WANTED (feat. Peppe Soks, Lil Parta, SKT, Enzo Benz, Welo, Kid Lost, O'Tsunami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b520af000daba3428b7c27898257047ead5954c2a7836f86aa02edaf7976d4c. 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/ITVU12500003.