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 0xf7afae4ca547bd4cfbbc4735c5c935f921063b7745fdd69d806576bd452b6ead. 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/e03746b6-de5f-4a92-b67e-6a37050b0355.json and https://artists.proofprofile.net/proofs/artist/e03746b6-de5f-4a92-b67e-6a37050b0355.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 0x82db7365d5e9ca38f605a1193a7ca62f6d221c869bbe10d4816b30ca41b02fd8. 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/TCJPN2161568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca57adc97887685cec81563cd0a5013819bc95df7d1f92698453a143e72b174. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCJPN2161571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60574b3ec31b9cda76deaebfd6847f38fb66a0f6076a46751b1a2bd97aab34f7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPWP02370053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c06b4533e6f36f7af49459ef1bdb6026a72eaddbf85747896465c87ab4c9679. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPWP02300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c06b4533e6f36f7af49459ef1bdb6026a72eaddbf85747896465c87ab4c9679. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/JPWP02300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8c366f8c1e09fd39b4f8a944a227bce73a01c842b19f8d813e17d217c93554. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPWP02300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910cf3c1701fd94006ca1e63a080ee8458febb5d3daeb0aafcdf6a655f46daf. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPWP02370872.
Believe it leap / Illusion (Complete Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70140333176565f1267ed1476b910dbb7a59f0f29ddddde0aa63828e8bf3830. 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/JPWP02370871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910cf3c1701fd94006ca1e63a080ee8458febb5d3daeb0aafcdf6a655f46daf. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/JPWP02370872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e5cbbc034bb1485dfc7244f3aace771169bd1c4f3c34b6abf32a1dbd3a71f4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPWP02370875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc47ca814df16ea4cdc9842517618b8e832a6ca948dc6ebf15dec81075f4ec. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPWP02470339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fac429503ee0dd9309adc081851e6714e5383b781240cd739bc6f6c31125e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPWP02470340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158ab693ede9da5bb0932bb3557b4cec05a4e9a7b9e22d355f59407c8b3de1ca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPWP02470348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc8a038acff727002c1e9c758226dddcbe035122035f8c624628959c3b20fdc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPR502511963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda274ee18cb4db5711cd5db8d18b3abf96789ae7b2242c49ff97529983c45a32. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPR502512272.