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 0x0471112c51d6e1f15261c5bb2d1c05fddf454870777f7966f241495ff6a7dfce. 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/f011b842-38df-49e5-a682-aad3901df7f4.json and https://artists.proofprofile.net/proofs/artist/f011b842-38df-49e5-a682-aad3901df7f4.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 0xeeafd9cc3348d7870c07e5c581bc3a08b289f726c84e70ec37de9651fbe65d6f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DELJ81917103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68174c08d96bb3d27823dd1de2674bf1e00873000ff46be03b2317212139621. 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/DELJ81937436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13887bf65c89d409082a5be7769abb8b1ae7e576bbfe67655f990037ffc6a476. 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/DELJ82026839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82e1a61946260eb1d18fb826d9a53507e12fc01115077d1cb6f434ad82091be. 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/DEZC62046342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f796b8e7525fcac7db17044bd627f84ef6838a80a201079e7a6324a7e400b4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEA622200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cccf006fdd44028c32a9f55dc0ae20c1175b0f053c93c4f08c07c37525d4f86. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEA622200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb024b37c64b5cf385cdc7020d3b85d25e1d4816a357d8765ecb75ed27bee424d. 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/DEA622200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f796b8e7525fcac7db17044bd627f84ef6838a80a201079e7a6324a7e400b4. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/DEA622200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2406b1574a105b17faf2d453261eaadfc38eeba11bf4861ca478ee93bc10c0ae. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEA622200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde40ac0f332e05f10b6ac8fec451960c9e5073f3e5e477645a24bf71d4937082. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEA622200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ec432112f3d080c61ce9d662420d66c239c260ae4e69642d9d04d252ffb49. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEA622200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4551452102ddadc391411a43a76220b851b1ac7fe8388403e830de2d237181bc. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEA622200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab06a6f65a1efd82bd0adeccf73775cb009b076c326783d2e3cc9436d57413. 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/DEA622200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba5bd7b4b2d431cca531034c51a5a37782aedae52c4c0adbe81dcdd4ed1c16. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEA622200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ce628ba856fdc396d1cb55f7e57e1d07a258523ce90f4f9b2a97fa297b00e7. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEA622200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b2dfb4d8938af386adda917f3ee02e12b688c48b442501af07af03e3fa76e2. 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/DEA622300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c640d57cf1f972a90b50f0434f8a188a3edc13433479d1dd1e48277fa95e88. 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/DEA622301597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b126a1c02c9dffa519e645fc2f088e98c928858f2dc62a7e7eafd5f98d4541. 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/DEA622301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e722a617c2718f137e9fd7ffe81269ac701e892ac668b29d5efa28cab30c27d. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DEA622303030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2207bad63c2fe5caade0885031767b3821ee6aa2ee96588e35243931b49a4. 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/DEA622303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1900f771ea76545de0848c2e10425f2c42717f660ec9d0f1b59912978fa5b12f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEA622302883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86753d39f9ba0ec55801a6dc61d661ed0b020d4ad5f88889ea3c7dc39d5f0ccb. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEA622303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd80a4d8c9d9c29b471250aeed2956a2e781544044d6d365a4128c6e253882c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/DEA622300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f08523960a083882691344a92360edc6bf06bf9eeb9dd65d2e27e47c0acfab7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:49Z), 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/DEA622301426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fb4d9af66d1137eea0a8ab4eb460383adbee7e95e3173e5f02160f9dfb24b7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEZC62537216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add16d7fda9fecc3583c09435d267de79aa1134ee2b12bf7e7f4b6659ed8195. 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/DECE72301677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add16d7fda9fecc3583c09435d267de79aa1134ee2b12bf7e7f4b6659ed8195. 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/DECE72301677.
HOLLYWOODREIF (feat. BILLA JOE & Morpheuz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17865bd1c8cf3c50c0dc1444f6ab95f0dc97592eeed091d1cbb67b2d7f69c95. 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/DE1BG2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c673eed73006d94929d6543f0bf4d1dae1688b14ebce08dcbeb672bbaed166. 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/DECE72300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe301272a980d09d9001e8339432c249262e3b03925fc2dffb55f95cba7e5f177. 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/DECE72106203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d00f5f60928385f8e27d71d27afb7b31fb8417f4f793c9d6ee91004212613c. 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/DEQ022101900.