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 0x0bd88d8badb8eae1cb21746a12a2ceaa4500ac5fc9c2326246e47361f1005b59. 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/b256cab0-20a6-474f-8888-f20e3de1d92a.json and https://artists.proofprofile.net/proofs/artist/b256cab0-20a6-474f-8888-f20e3de1d92a.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 0xb218e2744be5dbffdde166cb605c61851b378b4d200162affe7f015151435585. 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/JPS602203181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5676c851c22c33bd0d4872312d98710e0024c1dec939cf45a41ce2d1aed1d6. 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/JPS602203182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa468dfc8080f033cc3ec565e1c9a5bce5aefe1fa02c4e8c77c0ece5b92607391. 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/JPS602203183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e81a3256c621f653257a399aea4a84c5396a67928101a945cef6a58832a096b. 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/JPS602203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a928b824e5b0372c8fbad41e8e9d225fc0fc40aa1419448a4f280faa0795273. 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/JPS602203176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad6841cb1f11f405120f1097a276f7d74c9544e1323433b573330ed7105757. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS602104942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf160d3ecb8623003f78d9af55a79083413e9f42856053cdc78d09d4cf0dbad6d. 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/JPS602104943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2bcdd1d116f2f2d0fbf8f1e861ffd9237b30b81184410c918d2291a5d4c8eb. 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/JPS602104944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61e77729e4ed04101fc42d4026ca79274a3c915b0324d9facbfa300a10184df. 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/JPS602104091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d96837590e6ced2dc7217b99e0165474ec3f1304c7ec63de9c37318fe1b01d. 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/JPS602104941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555a7284b1027afe6e4333b8d5feca66392e2f3c2a95e18422491fdbdf57cffb. 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/JPPO01902843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2068f35e8b54b10c97ea0607363b55b62451c226ce88b7429e7532370a3e330a. 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/JPPO01902845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce071bc8703338b862dd2f4b383a0c68d653e2734cde73ead1e80e4313ae5c92. 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/JPPO01902847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d9abe19bff59b8abf85a4410ecb87fdeae4f0cb11df4a843324c6006f5feae. 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/JPPO01902848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4b849fba75be4d8cac71a6ab7534a234236b8ac72e0a5d12075c4f78f9dff. 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/JPS602203168.
トゥインクル・ディバディ・ドゥ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bba46d3cce93e930ae7d0acf2bd5e687d6eab37794ccda26af524320787f55. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPS602202094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d96837590e6ced2dc7217b99e0165474ec3f1304c7ec63de9c37318fe1b01d. 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/JPS602104941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61e77729e4ed04101fc42d4026ca79274a3c915b0324d9facbfa300a10184df. 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/JPS602104091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1cf48d46430bfb2a10864cf9c7253a925ad23baa8c29252502031b5258a4fd. 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/JPS602001491.
それは素敵な、ノヴェレッテでした。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279aac97b24b3c0ac96d1ba70ac22b526714d9a7f0eb749272768477547f816f. 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/JPS602001492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eacb55b341010998cb820836b08577f742da020da3ef91977dad5b420c1a5de. 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/JPS602001493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8892854d0b69f15642fa34a813740a0e676a2bab32016ee217a0ff29e1b31593. 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/JPS602001494.