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 0xb0c4f1cf3ed7cea6fe1dad73ec8be8dc35f4c08116e7ae67cefe52474a20164c. 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/561b368c-d7bb-4869-872f-a182fce6a693.json and https://artists.proofprofile.net/proofs/artist/561b368c-d7bb-4869-872f-a182fce6a693.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
エレファント・インザ・ミュージアム。
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 0xf15289ecf38cf04427f4a06ac9d37a7a74f19dd0c4dcea47e8bc20f801638c55. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:44Z), 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/JPA652205917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6f97cf01720757a5e525165897a70545195edea7a2166cfbde012e4555a48f. 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/JPA652205916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15289ecf38cf04427f4a06ac9d37a7a74f19dd0c4dcea47e8bc20f801638c55. 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/JPA652205917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1ac8e1f667c40ccbfda29a445c9a98655c0bae42d73f69b4a75172976dcec3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPR502206851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2732ac86c10463587bf7a2a7fc40655362c1d3f5f57d5b0266fd7df02249c51. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:20Z), 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/JPCO02224340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da82896fcd84bc9adfe094a56c0873a3370a0977b40dfa3eb47c4947f68fc4a. 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/JPA652306270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da82896fcd84bc9adfe094a56c0873a3370a0977b40dfa3eb47c4947f68fc4a. 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/JPA652306270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04574fa2a0ec964cde6f64b3b36888eb2e8dfeb5d7b9e6694dfdbeeade3ddbd3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCJPX2322812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf806ececa28bd84333cf38a34604b3a8a3e245c0d8321059276370c21d058d8c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPW462566516.
エレファント・インザ・ミュージアム。 feat. 可不
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa2b0cde227f3e356499a9be9216c3f5d10736f5a735448473062bd5fa4f3a7. 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/JPW462566517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddbcb93d8d69ced4275e58d59c8de420d582f6940aafb93262263eeef3a81ec. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462566518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5daf327c61d56409a3578e7bb3d64eec973a0cb57bce083d3b954c44b67ef6e. 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/JPW462566519.
プルメリア。 feat. #kzn,可不,Ci flower,音楽的同位体 裏命
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd82eb0124078cfa881b60d76900fd721eb028a9d7f29aab385901cf70f9b4c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPW462566520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a3f377438b1e923301761d9941a37267b855f486db1e528428146241ee320. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPW462566521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa158c6ca6bc8df44c45430bad3769765c7e73ac0357a534d833b670bec788995. 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/JPW462566522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b3d0ba8c3765a570adce209560a650d6732565604ad3680ca61e31ff93f68f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPW462566523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581025d2357beccf3e98b6bc7ffb30f7da66d2fb816aa316113191a67eba53f. 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/JPW462566524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6250e8ee777b760119b1f27a460aeff916ba8900320dd20f4dbb7a2a3956b5a. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPW462566525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65846007565ddc575ff75b820cf9378b1c55903da4a6fb748bc2709f7a634c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPW462566526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ab7e9c8476ab6826f60f7f89bbc5d06cdf4b619c90d44c9d70e2475452a4b. 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/JPW462566527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192feefc5802ef84ec6c645ad4f3fa79bde58cdf8bf22094fac7c132b6453309. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPW462566528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c28177f60cee1d66e2470ae04d96dccf17d2f4dbeb83062491ad5fa7ae3117. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPW462566529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8258421d17d27a03103f41620071f17843fe88fe8a10f77bc18e5a56cdfc07. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPW462566530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49541fcf0c65a382e02f05df43d1bf26d9399ae5d2efb96ff78d1b9f04f3fb3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPW462566531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62eee58f65ebe9a38c03397d0b6c9892e92c557fd3f1530880db66d9347222f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPW462566532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91495ac4ca8b9c2492e7b052f3e333f1d35c6a67c20f680ca917bf4b0781e6f6. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JPW462566533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e52d16b886063231b80e8ef3a12a78eddc08755619233ec8946e42a2fb006. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPW462566534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165aea906a568067f36bdc60a94c0b1594aba3c09d3b4daee8558aa6b349c56f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPW462566535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b976b53cc6f30fe1f7ca64f212106a36f58754de160a2f6655a5aa804b9d226. 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/TCJPU2215045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a617e67f1a4ced65e3264f26240965dac1304d5c7f56ef3bf41563a0b1fb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU902304769.