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 0x596d75493586a0b1f69ec81a1df615bf922a10d57a06e40881c9a0054c4117a0. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f2aad19-77a9-4343-9129-1f25fcf4df69.json and https://artists.proofprofile.net/proofs/artist/9f2aad19-77a9-4343-9129-1f25fcf4df69.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 0xd71d88bfa00e4add8e2a8c5f4437fa852954d6c3679d3499f8145593ba23f118. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPS801852601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb5e60fa7280f8f7ba361b42cb34a623f14d3fcab1dcbcaa906f5d9ba3fbca3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPS801852606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab92c71bf9484e60124d45c6c71b06d6940471936c368b1683bd59d7f9f277. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPS801852605.
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 0xdeaf5dd9494a48eb32cfe8d42a6344175ada18de02ddc652e73d210f9d0f0068. 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/JPS801852592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39c1c80f9ff1a168a3fe957ea895805b84fe785ea0b9eb5a764aa5159bdc23. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/JPS801852597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2f5e1a8fafbb636ffe644869a33d312f36ed78a6d47122a455b6b9a777403. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/JPS801852598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b2e0a0bd561e115de105683a5b200198bed547d2150a317acb3fef484cf33. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPS801852591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8366bff4bc8624e1b8feb07a3af88b6e5b7a8dd31220e731c363192b9d83646. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPS801852593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08c6f3762f2ff842207df00465ea49b5fbdb3bbef6d973b6ddffb695d4240f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPS801852594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca050de86f8b3bc9fa65a5d117c4ec875913252b95de0d014444d469e7892cc1. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPS801852595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc404ec1ca3465caf10adbb515d16f463be8b38c40442d1673626ae32b07b04d8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPS801852596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668be5997b6675670c0d55c1651cabed0b0a36ee28767c4286aabdd2340b3f91. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPS801852599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6c6bb5464137ee5097a2b7ef5e3ebdad81e4d4f46c85aaef0ef9d96fca177. 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/JPS801296113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2732126b67261738b0eca27f5f9b23c6f6d95f6d57b883fc9d669811d144401. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPS801296117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb878681a15acb3964f3f1cecd9035623c8b46ac2215b4ebacfb0c67d8c8bc5b1. 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/JPS801296119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51cb66d0e4a28fa9ac62e0b909e4aaa00e12d954b9730c64fcc194aa03cac7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPS801296120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7060dcff2c8ef4ffc295e05247a84b840a36f7ba0e64b29fa1de38116e9c2ae9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPS801296121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b43bf45efd806bb137438f86093c2acd419c5e70e50b711be4c24d9e200d80. 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/JPS801296122.
その場を後にするのには訳がある
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e0f71cf7532b30d872666f827847dac3792743f0e3b7f2110bf21b1a7c36e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:11Z), 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/JPS801296114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016458ac00a6241070dd3711c69999090c6a594e294914a6ac1d4729a7b9fbd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPS801296112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7b4bf9da507f0e76ce286b9f4f9151dae3e60fef7d9a40230b58351bedb95. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPS801296115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1beeaea6619342ab9e87a8b7cbf80e7172643096bdee5548bd577a1de5a41ea. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPS801296116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d62947d75397044ce059829af9ed064c73362ab72bc8f2b81879a86251f15e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPS801296118.