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 0x4e0c081691a37a66263baaa9cd76666051df58acc73dedccf02de6a1afe0d988. 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/6e06f270-8299-4c2b-a0f8-74661ebac2b9.json and https://artists.proofprofile.net/proofs/artist/6e06f270-8299-4c2b-a0f8-74661ebac2b9.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 0x51e5605a2d11f99cc8d3855bcb84070fcedb7d865dfb682c45bbe992f95c469c. 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/JPU651501750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f91b522d3e0ffc51d5e77b17864edb03443648c7059915d1c62a28ae65a2b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPU651501770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15fdde497ed1816c73fc09c04878effee8aa98c1ab0a53c7598f56c2a49bb6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/JPU651501780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e61b55da5a4fa6b75089f45664729860fe5d8caa9cbebcef0360a1378010586. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPU651501800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4693cf927979de4edf0cb3faf186d24b1657f4eb5be1345f49b2cf9ddf26e594. 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/JPU651502590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ab6bebf21dda3388bcfcdbd2d1c0e846059cfc6a57ef35ef3972ed3996372c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:13Z), 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/JPU651502600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902da686190872286bbca9242f523914c320d7034a5d546f8ddb33de9cc97128. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPU651505800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b443d09208f98589fd69bc665aa579f5d45b91c2debb3f2eefd522c1656e55. 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/JPU651506020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea40bbaa344ab1cd8ccab8b96f1a676677216007fb85c32d5bed010948e2588. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:57Z), 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/JPU651506030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846c73a22e8dfdd76757e77824ff582044e1fe447a0debc62034a2ec6db23c9f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPU651506040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0a34f71d52a9cf0deff795cba789a5fff3d0f4c3a91cd2ca96ee212974bde8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPU651506050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dbf10d4e34c7fef9ee631fc9e0929e61ae284fe93a54a2e8e826df1e4f74d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPU651506060.
Where the Hood At [feat. in-d ＆ Campanella]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e3c879f54d11b91175ee013539071951f4fefcdb5245d4f490df23d348dba0. 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/JPC101800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa01effae12ecd14e361d93c1a0da72f8c6730aba3b41350f413ff1e76ed1ac0. 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/JPC102400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab26af71d104d2e225987a9d67c94c46b555a0ca3f3bb9375fad4f6cd33fd83. 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/JPWP02100962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699fec762cf68f03633b0c274bbf25791ab1aa55579d5cdc9e9eba51b73fdcef. 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/JPU651501450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88ef2115936466ea08fa95ceec7aa983cf3125f7340cc2a115f6db52e10662. 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/JPPO02102231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa01effae12ecd14e361d93c1a0da72f8c6730aba3b41350f413ff1e76ed1ac0. 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/JPC102400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe724cf9186556c55a333067c10ac66e76d0cae7f17cf248eb17bb6957e69173. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPU651501920.
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