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 0x3e8e40fef6f47ea279c93f3cbb7db22f21826e8a355cc4d1d865e258a93c9a22. 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/222baac6-3e49-4779-bf7a-dc99f4213a2d.json and https://artists.proofprofile.net/proofs/artist/222baac6-3e49-4779-bf7a-dc99f4213a2d.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 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 0xd6d707791cc82b89d37d4b3c3878f6846dd590b84bd9da7afbfe764f52d6d74e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPVI02001359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22122ae7593507e4c417c5f26d03c6c0a3b19cd2d088ba573e2794ad65f34f4. 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/JPVI02001360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c03c205e823a3be65c112e03009519cd5bc587d2a1ab115927039a9744ca2c8. 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/JPVI01819221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6792142a75f76277d0caafaaba86c536267db3a08cbe6fb37245dc88c3c792f6. 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/TCJPV2341570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22122ae7593507e4c417c5f26d03c6c0a3b19cd2d088ba573e2794ad65f34f4. 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/JPVI02001360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4181a5f317c06de7e2b08189edd7c7da75a2981670224e8d2fe2f24cd29386c7. 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/JPVI01901022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c03c205e823a3be65c112e03009519cd5bc587d2a1ab115927039a9744ca2c8. 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/JPVI01819221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786f40f193da51c78938455a6dfe9396e975fe351c0c305637aec017f1f486af. 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/TCJPG1745288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510bff4ac71c407ecff3baf0c5db24d9b453d4c225759589413c7b82b84a739. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCJPG1745290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4e746a644ef39af2e071e9cc3dddb0b1061f818b5c6db68705f5b73cdc0b6e. 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/TCJPG1745292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad53de7abb539884d1600c639b5549e20a0d1173f37da8c2cd4ffec6cafa1cb. 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/TCJPG1745293.
I wish there's no you to be around (feat. Harucha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af264f85040b35bf8545fb8291c0141a5166c588ede644978b3d5481511878a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCJPG1745294.
I love you so much but I can't tell you (feat. Asako)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2590ded802b9435f3bdba87a730eb57a396345a23e109874bae9cbc30a5fb. 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/TCJPG1745295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfe47bee6dd9656e109a579ea8472a3280071769ee7678b59d3d6bd9b2e3fd0. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:17:57Z), 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/TCJPG1745296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b487fd4ec5cf2f867f322aca594bc3671e8f986acd43746557b5756534ea2d0. 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/TCJPG1745298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1615c6d27a5f56c21640d3d4f7983662602b4c9c33f232bcc50c0da22b133d. 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/TCJPE1664481.
Sayonara Smile feat. Asako (feat. Asako)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfaea9fc882f73a0a04204a3eb25097d3f6ad6227527da752243339c4150af9. 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/TCJPE1698638.
walked out for the moon (2021 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3c562d056347a8d8f02d540b39761b99fdfe8b9cda53f8944d0dfaf6bf2c59. 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/AEA3A2270585.
Katamari Damacy Rolling LIVE (Original Soundtrack) -Lalamari Damacy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee02dbeba3fdecdae9126528c73e191c6b250158ce043c86c141aa7f3ecc67. 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/JPX832500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091dc82f004d3fbeef337504f815cffdf5aa6049212f38480c54aa27a2aa5b0b. 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/JPX832500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35708fb878035a3f5688717104307bc189fc5a7c8b7895a4668c4c0e7a171696. 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/JPX832500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c79ad54b11ec2cb69ef5e151e9006561e556ecc33cee69e60a02e7f715d068. 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/JPX832500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702d1d45d61d43d135ef38a875195d4a2fd8cd28f31abaf5962ff753bc184384. 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/JPX832500433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179cef02de1fc3f85fe124404f8b7058e7d794789fe90863d64d7ac9f9c12f6. 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/JPX832500434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea51d129779256936c5c2829d4a382a86065b75a95a2de208f09c7edd885ade8. 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/JPX832500435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378a9f6be021d0fc0b198bab792570ecad172bbe2dd831ee3f02ce449b91f980. 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/JPX832500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a6e043293aa8ccdca78daec28fb5291a1021ed0063c9d7d971dfc874914b16. 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/JPX832500437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da43fe29d6cba0e6173c6eb1024d03cc30d7ca7238d71b86ad5c2094d77817. 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/JPX832500438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57be84432df3a3e183da691647d877fcb1a4834a8023f807dd387add1eb536b1. 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/JPX832500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3e299b80d21a5c0f35bf47d82f6ef119c2408d414148c54fac91c4ce962f4c. 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/JPX832500440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf813003e4d8e292e049aaa58676484a147df211b9fd95a0d328861e958c522a. 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/JPX832500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c698953a31c90f35d43323d0358ef8e2d79ff07db2f4df1529edb7a9d468031. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:21Z), 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/JPX832500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b45a06821c50e3ae19cc1b5779f6c9ebb5b2ea528a4535c3841ef49ff4e561a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:58:21Z), 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/JPX832500444.