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 0xba66ff89174bdb5504c76542f5344758dd185ec1867e8187fd2d1230f93faaf0. 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/366f5472-eaf1-487d-b711-2c00a654865d.json and https://artists.proofprofile.net/proofs/artist/366f5472-eaf1-487d-b711-2c00a654865d.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 0xac7b1b1d27242df0e1736c91a48a020a18c1277055b8f1af19f47e4a5fb51e43. 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/TCJPZ2415929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c27de0a8728bfbfe2824afe2808c4c15f7e4620a3c91da46dbe3586c33afc75. 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/TCJPZ2458256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac612a0695d0b4e8a6156ac78ca326a563211a1b0e720505ba15f8f57b57d694. 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/TCJPZ2440116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b1b1d27242df0e1736c91a48a020a18c1277055b8f1af19f47e4a5fb51e43. 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/TCJPZ2415929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2487935184f8d0435e7c756668d906f9a4511a8e68fbff3627141430aa2cf12. 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/TCJPZ2415934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4bd4bfdf14fb1fbb8857b03203a4d0bccf57afea0243d98debda63538c0d86. 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/TCJPC2473256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660b8dff9233a4e1b4ee533e051a23e6f4b2e61a97de9a6b1e649c60b269c249. 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/TCJPB2433649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18282c5247ccea1f6b6152733bd248bf1440d30c090ae9dceb000ddb15f5e453. 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/TCJPZ2447533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc95034949f46f017b3ce8e01efdfe0141467dd3af62dd8236e640325aadb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCJPV2373138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2924c183517fd5c523124d756732319fe265ee9c9ad6ba421f2f7df8e6c43aa5. 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/TCJPT2248865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08a34f643834ec769f5b119358d9e1592166dc8f92e5b731016d0397970316. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPS2281795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a50ddb5ac3f837dc5d6d56d21d0b5e4b52644e160c77a453122175805e2378. 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/TCJPC2439116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92da28067f5748cb83956e19cc4ce2243aeb2c0da227b3a4cdea2bc71c8170. 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/TCJPC2439117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc181a25257c38af17fc94c25171b1baba7aafe33296d51de6b48cd141f958083. 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/TCJPC2439122.
Crab and Pancake and Hungry Girl (feat. chinoi momone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f7dde68e141c609a0eef3596054bfbdc6e4d732b66dbb7ba52c4909f77bbb5. 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/TCJPC2439129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a1e943c4a1bb84335b193bcd7276f02761eeb88fbd3d3c955cd80b0fe2def. 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/TCJPC2439132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9e40199f0dcfc08f8190cc6177885f7a0167f7a321cda295d9a60b66110999. 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/TCJPC2439137.