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 0x3ebcaaf5c2fb4f7406dfdb3d43420b54c583ee52ea0e203c4a634159d2184ae6. 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/e65cbc49-cd2f-492d-be9f-a4bab434539b.json and https://artists.proofprofile.net/proofs/artist/e65cbc49-cd2f-492d-be9f-a4bab434539b.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 0x09bf70ada27f75c157f0d748c1926a06eb654887cd8c78be5fd7d47f76204dbf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:54:40Z), 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/JPR561900339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0367cdf983ff281b48c4799a36633eabe6caf7b7f5328bceab0da6658bcf36. 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/JPR561900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf3c7e0eeb8455ed64f405741a0e2540814fc57acccf3ec4f4fcaa1e6440657. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/JPR562100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1306cdcd34a0a73e86b7ab66b3e1d968a8fc19a278ac6a4f416fbda93fc0c34. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:41Z), 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/JPR562100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c6bff820e333f1a790d83d5e7a872c86eedfd42674a4e6165e9226789d538. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPR562100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab734e1e30fc23202e969c64725292e9bfb6535a1f175a649a45015faad8a8. 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/JPR562100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570837196c26cb61a5ff97c269cb92732a404b6648298bc5db8674db9db366d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPR562200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5346ccd41c3649a9373666c3b2aecf814bbcb8b3ba2a9227b7b7293c4bdb2. 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/JPR562200142.
群青のフローセカ - 神蕾-シン・ライ- Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1644c4973e5d470f40b81156e32664c4064485f07f148dbe21126f6e77106c78. 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/JPR562200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce093ba0c9d9eecc428789bfffef9b0d0ad5673c8aa352044309c927a49d0f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPR562200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570837196c26cb61a5ff97c269cb92732a404b6648298bc5db8674db9db366d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPR562200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5346ccd41c3649a9373666c3b2aecf814bbcb8b3ba2a9227b7b7293c4bdb2. 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/JPR562200142.
群青のフローセカ (神蕾-シン・ライ- Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1644c4973e5d470f40b81156e32664c4064485f07f148dbe21126f6e77106c78. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPR562200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce093ba0c9d9eecc428789bfffef9b0d0ad5673c8aa352044309c927a49d0f. 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/JPR562200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9372003f398211dc517c0b54247623e68085c89a9d5d15b6467741da3513109c. 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/JPR562300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf9334026438b0f8c8762875dc311c7a5e7cb8221dc5b174386b4bf42e789d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR562300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50315d790f6312b5dd080c7c64e79dd22163f49a9b19e66f83ba4103ae347f9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:28Z), 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/JPR562300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c39c0ef2f92c2b0c8e6c36a79e1e3243bd33c367d2df5d743c1b78fccc18f1. 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/JPR562300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c39c0ef2f92c2b0c8e6c36a79e1e3243bd33c367d2df5d743c1b78fccc18f1. 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/JPR562300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf828c174e7bc48ac96ef0768c756f9da828aa6f565895b21470fd9bb2863b65. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPR562300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31942e2e9b0196709b29ee628a8e429a4c07736ba8f0b41175a2a2eb469064. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:30Z), 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/JPR562300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf828c174e7bc48ac96ef0768c756f9da828aa6f565895b21470fd9bb2863b65. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR562300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab3d6ae80ef743f10e0ff511bb864beaa218dd57082383605e809bcc76b976. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR562300574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab3d6ae80ef743f10e0ff511bb864beaa218dd57082383605e809bcc76b976. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:59:07Z), 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/JPR562300574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31942e2e9b0196709b29ee628a8e429a4c07736ba8f0b41175a2a2eb469064. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPR562300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf9334026438b0f8c8762875dc311c7a5e7cb8221dc5b174386b4bf42e789d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPR562300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93fa34a522ba01cfd37f312adadb4959c9bb43c0c1ed8bbf79e60687d6d410a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPR561900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab734e1e30fc23202e969c64725292e9bfb6535a1f175a649a45015faad8a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPR562100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1306cdcd34a0a73e86b7ab66b3e1d968a8fc19a278ac6a4f416fbda93fc0c34. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:43Z), 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/JPR562100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bf70ada27f75c157f0d748c1926a06eb654887cd8c78be5fd7d47f76204dbf. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPR561900339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf3c7e0eeb8455ed64f405741a0e2540814fc57acccf3ec4f4fcaa1e6440657. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPR562100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7d08003c1fe9333a98d1dbe057324a2215e9e5f34b0e79a3b3b557564f0f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPR561900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9372003f398211dc517c0b54247623e68085c89a9d5d15b6467741da3513109c. 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/JPR562300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76cbf2d5a7b78cedbda4cc64ab2fcf7c7866c4e91e632b4fc62b0650b683f9e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPR562400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae030e3b44e425b57400531be5c747dcfd2e00dde7c0bbaa0e45a9c233d49ba9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:53:54Z), 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/JPR562400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd4f5c0f8856c616e4804fb05777fe3a0697a4bfb215307ab3034f8d48b121. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:36Z), 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/JPR562200479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17866e20c57f8187701cd37e972d6d188fbaba5b78d179b0981ead52342cf88. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPR562400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5346ccd41c3649a9373666c3b2aecf814bbcb8b3ba2a9227b7b7293c4bdb2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPR562200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bf9d5a4bb5acd918d472c817f0fa24fb73b137bf210173913703e4011e842b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPR562300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf828c174e7bc48ac96ef0768c756f9da828aa6f565895b21470fd9bb2863b65. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPR562300344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9082ddbb64e3cc6b8ccd33c9d321c5e2fd529adbc8a57d96ca78449866259f5e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPZ732500330.