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 0xd0cd126764d79f4ea2aeaf505f739d4e16382d54eb5bca6199e0b54f9cab1a5b. 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/0c2ed196-b602-4af4-baa9-9338908864cd.json and https://artists.proofprofile.net/proofs/artist/0c2ed196-b602-4af4-baa9-9338908864cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The song she was listening to before saying goodbye
元カノが僕を振る前に聴いていた曲
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 0x2a77546c5d2d6b5d47500d670a9aaf532483fb11643bbce1c4ba21715daf0cf9. 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/TCJPT2274844.
この恋も大人になってしまったね
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bca1b10e97815448a4582449186e917de8bf34e4653da13edd78033a1ff48ea. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPV2314969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cc10294b5d74f486adcecfa1a0e8997582449dcac5a074625b8e603718e9df. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPW2351258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e7005afa6eba2e589ddf0c93f4a15b83a921b1f4b6d161e263540425ed6553. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:27:29Z), 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/TCJPW2351276.
I have never thought that a bouquet of flowers is beautiful.
花束を美しいと思ったことがない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e292339479d16c4d322b6de7af04edd8e1a171098bd5b6f967f706507b7c73. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TCJPY2483694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae7c88dad2dd4c90e120a4e0338f068cb9f6af71ad77f9608f946453b132a8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JP92N2417112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e292339479d16c4d322b6de7af04edd8e1a171098bd5b6f967f706507b7c73. 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/TCJPY2483694.
If the blank space I drew will save you someday
僕が描いた空白がいつか君を救うのならば
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e01814aa29e3b9255733fbc2a3d1b96ef0bab3f05a1cfe5b9f57853ecbe798. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92N2505262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283afc62136264ecc35af89dc7817ec3d95d8e54f04e8eb05b73d87cdd212e29. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JP92N2511449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182bb7cb7fca624c9dbce4368ec477ab2ffaa23b80dddf0c5192bcb7f3aaca01. 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/JP92N2515268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a260910e97a6485b27de096d2d35821f37ff132d9a20159fbb26e8bb13cc9e. 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/JP92N2515269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdda5270b4eaea38af7e05218d26b44c47a9b07c84125f02f672e84bad49383. 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/TCJPF2596087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996d299c54861abaeac068a8e81b55e3b34bad2d0ff132673ac00f8b59847b8b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JP92N2519264.
I threw my love in the trash (2025 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4e29e9cfa4c21843689d9346d894e72da53c2fff5826903577a75c5ab53edb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JP92N2523208.