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 0x3149adc71e7c47eafcc410ebfac75473fcbd94190618c9c239eea818ec5fd8d2. 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/22ee72ab-6e08-4d71-8c10-7d10bfe2e17a.json and https://artists.proofprofile.net/proofs/artist/22ee72ab-6e08-4d71-8c10-7d10bfe2e17a.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 0x9af86260ffe9e3f9b8c06a890474b9f21c97f3604d766fc9e12ce0a929b15980. 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/JPCR01605630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fab1cb9972caace01449153cbaccf7877a4713a84db50423afee0497d4372e. 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/JPFL01700650.
お前だけが - （1977風リサイタル渋谷公会堂）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd3d9554af54cbb201fc11fe6b6e2b5059cbb984b44565bbe0d83d45b6b002e. 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/JPFL01700780.
ささやかなこの人生 - （1977風リサイタル渋谷公会堂）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d3d8288100f7779b68ba387f983c72a952f9d9fddc1539cba13bbaee746a5. 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/JPFL01700820.
君と歩いた青春 - （1977風リサイタル渋谷公会堂）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2688f563aedc71fa2607f4e27aaa701615e15a63f4ee659a98d3ef5599102c78. 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/JPFL01700860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7304e2cdfa7c3f1199e641a796fae7fe807bef6bd377e9247b8c1ce6647414c8. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPFL01700720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca30ae6f09c30b8f21c618a740cdbf0c7dfec9cc5783c1338b934fefde0b2db1. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/JPFL01700900.
伊勢正三LIVE BEST～風が聴こえる～風LIVE Vintage-SPECIAL EDITION
今はちがう季節(1975コンサートインつま恋) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6519827ce99fbee3a1428aedae4b6529242492e1546704de57a33d0025791ace. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPFL02100360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b7f879603ae4835dc689bc7c375d1f23e099e2f896af26be66c28056cdd59a. 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/JPCR02102850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160a4d4c0c00728a2d4ea787fe84a8c459cf4d0afc9c4345eb7f59166b5a0273. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:16Z), 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/JPCR02102880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e75b2ed26ddf12fc0e4dd18916e3bac4ccb9e7eab21e6197e4a004deb46aee5. 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/JPCR02103140.
Ise Shozo no Sekai -The world of Shozo Ise, The era of Panam Label-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe052da78e86f0ffbb40f1ab3dcb394c06c0e89a55db74c56b42a9700cebbe2c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:55Z), 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/JPFL02300450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326c25984410a9f7a854604fcdeeb06a3dd2d6f8b1fb6e9be7220a686569fb6. 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/JPFL02300530.
22才の別れ（来年もよろしくコンサート 1975）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f76225337534ef1f00357194a6a521e602cd271762faac40c68507a6d3647. 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/JPFL02300540.
海岸通（来年もよろしくコンサート 1975）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e27d8d6fa065815ae88ab745d84bfa916581ddc7a88c8678d384f8d7b19e90. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPFL02300570.