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 0x8e1a64313c86f6d5dfe9ec7e418c67d69406e451b09723a317f5345f684333ce. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c27ff0f-d556-4fdc-a592-f3985c22915e.json and https://artists.proofprofile.net/proofs/artist/5c27ff0f-d556-4fdc-a592-f3985c22915e.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 0x11646b45c3c2e69646a22434df43d4512d20a09757155e1220af5ebdf5d555f9. 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/JPF311100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff99bfb87c9ea7d76b4ae0e07ade800b4d20a3d7aa9e5772d3bba24b160313a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPF311100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8d629bdb91b3fd5df1c534e207eb008852f99a74d974a789e427060c8af9a6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPF311100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2f5ac037ebe023f8d9db32562afdea50bdda6227b3f6003f9cc8103b1dfa1b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPF311100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2470e0e0210d10881f6f25fe9a54d01b797f12f15e65070f2c09f36fa4483ac8. 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/JPF311100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e323398285bdbb65f751ce72daafa458cf15c27a0a7d24444f97e87a978f51e. 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/JPF311100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565a1d72e2556411dbcc08ccaac40dc6bbd436d954cd00c6599dda4b7d90974. 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/JPF311400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c619131b7b211b02f615fcbec7c1f7fa91a24c9dbe3df2c3f9904d4b62837. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPF311400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e06612e88183b769a6101626dd47eb9a2cf8f9273920f46858196c98f4839e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPF311400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3807502e20a60341d622f2eaef833dd600670fdbbc8022fa52a0cd785aab7577. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPF311400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f572c7f52189a3e4e06d8f9da03a3ae49e2af531258aa3322712edede2defb. 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/JPF311400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1079f8c9731ac2051f817830b3021e515a4cc3ec05f1d91ca97bd6876451f5. 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/JPF311400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbabef4d95c9abf53140d6888c8a5bb891ec1fb7f82c9c22d79f264f2e717dbd. 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/JPF311400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dca48f3e565be4f9521695cd7c4548fbced0f12b115fdcf5cb3457c3508931. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPF311400013.
サウンドオブミュージックメドレー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41303a418723ccda2c65e2210901868e33803ad9f84d0250a616ee9cffb45092. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPF311400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b3ab343b2bbe420c4ad13c18c3d447ddf4257ca383d600f9c076d69db3bb0a. 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/JPF311400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79632a608b856854766a956e3d6e2df5069059c09f0bb6a6a42a277bd1588e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPF311400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe481303fd86ff3ef289b9ccef2737193e165438e48f26e6fc7c1e69f7566b7a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPF311400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb9055aa2a79a2a86f31842a0e1965615a901bc6587247f5433b1776b3f63f5. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:22:54Z), 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/JPF311400016.
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
スーパーカリフラジリスティックエクスピアリドーシャス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b93ec979cdd608d87ea01e6b416d6874812d6215538b0d02159913a180a434. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPF311400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db89d5424aa2dca4d2cf77b96fe19378de57687bf0652d4883b252ca61187f8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPF311400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b4d72bcb8b0e9816f326913569b4590bc1c51c33e2f66c1cda84622c65422. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPF311400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8452e7f0a879046499ecd52f0682fb8009e647a3834c6776e1ce1600393997d0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPF311400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48f25dbbd9ffd50172ffe6266d8ecee1c592678d81f8383e4773d69a5bd43a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPF312300001.