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 0x93161e1d5e32873272f4c02e74e805af12224d5ceb8b8c5d8868b0b61cd14ec1. 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/2e58c1e2-604a-4355-9a4b-339c659bc80c.json and https://artists.proofprofile.net/proofs/artist/2e58c1e2-604a-4355-9a4b-339c659bc80c.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 0x495f7ba76faa8a0af7087963487b6452ac9701a65f6ab2d8a76c0a3355f268a6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JP92A2401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0fdd9a9aaa8d8b886cd2e4a26773c65222b6da49f4d1abacddfc8260907d8f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JP92A2401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481d5ff92dfb06c7fe04a5f78011126ad4d52ec5a9eb9a87a2c62e2acc9f56f. 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/JP92A2401331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1fd45946cf8b7ff980f60acf8163a8bd9b8961df69c8afda8b7fd41117512. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:35Z), 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/JP92A2402640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9500e91d1e08a80192be9c60c57376a2579907edb952116de5dfd18f02635ab. 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/JP92A2402641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe584bd70b00838082c5e548a890bd2c1c6c83a1c31d712a634c0ed96329cc5d8. 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/JP92A2402866.
ラズベリー・マーマレード・プディング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefffda0cc1ccd3f9d0b5daa1cf2016c0100d276cec0e2ff9f9115b6fc77a87a0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JP92A2402648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a99cb8f1387b3aabae6a709e14131c40f20952d99e28760fae1972856e6ff3. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JP92A2402656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0d314979164ed742f612c0c1e5ba36db5d124a1f65e021b04faa1674dc73c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92A2402657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbddac0c753d76c6d60217655ee1689ded51133f93e072d1b517a79c25b69bb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92A2403414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27fcb9e7c48f290dab5d9625163f93f7fb486135d2d702e7fe1e6644cb4ec23. 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/JP92A2403424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b5ce4962bee6a196ded1fc9ae8be36d0f2bfe7fc4af154efb0342489dbb43. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92A2403447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8906c31cf1c98242c41491fc5ca9c807c4ac0a4960e0a0f5c4a7276f0f91bc2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JP92A2403459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03f3133585c7e9767ef5b279e31c2f0e035f59f8de973afac944b7ec1f4707d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JP92A2403461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca3e24b4015a10b553247c2ed5b5bf0f96f5d571cc672dd3806c8ca59ed55d7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92A2403468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31c9b4102f2ce930082b0017476f7fa99ceb737a690f1c9ad53605463189c3b. 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/JP92A2404405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f013b5cd5481611d9e7df630d9ef3d9cb90ae22533f987aa688d702583cd826. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/JP92A2404416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e8bde8c6b3dfeb22f4af434587710db952a8f7787c00811be58fdafb5eab8c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JP92A2404426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53c96508887df4c66de33bd8f51ea473145b829072bec089ce7c4ae8c48aaa4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JP92A2404441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc0d5bd89bc424c8ea4d377b8c55a663b5d93d1697270728b3f8f9f2aa6b3e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92A2434685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde21f2384cf0462e3314e130e16bd746f4961b69fb917afecdebf8a4c26720. 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/JP92A2434689.