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 0x63bb03886783629bbce614d98cce15792b6e7b49bc58f3b67eee812bfb2ce9e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b40f1520-3e52-4746-a5a7-04594929947c.json and https://artists.proofprofile.net/proofs/artist/b40f1520-3e52-4746-a5a7-04594929947c.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 0x6c3953b989f55397a65ca805071f4987dc894b4df4c6ea1dbd573be63b1f9711. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:12Z), 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/JPU902001162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96a5b40e0f40ee2df9a0257c0e1ea35f21f966cf31d05d719c6165b603fa58. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPU902101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409eb4b84efc52d27ab7149cfdd9f7793698ac88d19858b8f33ef028b467f0e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPU902105265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41a4acdf78586334dd4d780781dec6f0ca85a1ce4259008a23332313de56ebb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:30Z), 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/JPU902200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40523ff0f96cccf332945485ef4f240a1c9a001ac4ec5ad24e13002f8b078a0b. 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/JPU902200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96a5b40e0f40ee2df9a0257c0e1ea35f21f966cf31d05d719c6165b603fa58. 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/JPU902101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625cbbd6956d9bcf5b4748f3058d836f4ef18e87d3ca407d7d4bd6ae9e3ab9f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPU902105653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0b11c37a9a57100955eae560268b1b9f13c65881066ce172b0cd35538a9517. 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/JPU902200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcced9d99108daca8abccd35e0aee50abe7cc4a1bd6cf762a44cd454da4e82261. 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/JPU902303933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35cb9fe296a1c79cb2eb9b16ecbbeabc46b77d852674547650a4954e8315cac. 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/JPU902303936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb35e78eb6e3373a61b4c86e3fbe9ecf340ffe2649b6435393ae69d59d5c2160. 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/JPU902303939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601ad7cf6b293cdba683d088f458628ae638d306d3ee5737c4b201db669824e. 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/JPX522500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f1cf414dee2ba6b06e5f3831e2bc09dafe6468a17085403b5d65d9cfb5395e. 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/JPU902104883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acaea972be87e70393cf3d167c5d2c5dac7b6f762c8fcd19d3ff55dd635b5e2. 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/JPES01301172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acaea972be87e70393cf3d167c5d2c5dac7b6f762c8fcd19d3ff55dd635b5e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPES01301172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acaea972be87e70393cf3d167c5d2c5dac7b6f762c8fcd19d3ff55dd635b5e2. 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/JPES01301172.
好きですか? - Live at Saitama Super Arena 2018.8.5
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d8e0e728671792807aaaec746a9f459b5c2ec7bbf97f548229608a66cd9a4. 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/JPB602002924.
好きですか? - E.G.POWER 2019 POWER to the DOME at NHK HALL 2019.3.28
E.G.POWER 2019 〜POWER to the DOME〜 at NHK HALL 2019.3.28
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62171cd6047d34cc0c360df9cf0d584adbe10db5028d629f0a201eb67da128bd. 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/JPB602002530.
あいしてると言ってよかった - Live at Saitama Super Arena 2018.8.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaec9559beda324166e35ce178db8aea3807d5dbb541dd8b497b011d767f925. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/JPB602002925.
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