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 0xfc109a33fac350300db61c37dd609d184c6ff09ae2128eef9135c04be29543ef. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4069c04-6aad-4e0d-a69d-2afb284dd790.json and https://artists.proofprofile.net/proofs/artist/b4069c04-6aad-4e0d-a69d-2afb284dd790.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 0x7e02667552dbe99a65deb2c4e6a90e34170da2d83aedfdf950d9fc91145aea70. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCJPX2303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02667552dbe99a65deb2c4e6a90e34170da2d83aedfdf950d9fc91145aea70. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPX2303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed0e3616f1e58dfbe37cb109720bf8d099f228d4000b6e398f5284f4b46904d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:35Z), 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/TCJPX2303686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed0e3616f1e58dfbe37cb109720bf8d099f228d4000b6e398f5284f4b46904d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPX2303686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a844fbf55b60e1983e328b0dcc9d234278a150ff8073a9143e6e54ff56e69. 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/GBKQU2006135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6d15f47b4d546a428fcfe6fdf851f7adeffb78d891b417691bca82195d28d. 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/JPN841900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451829af9633fa83df0e88331413d7529dc82f954152b8f376073e1ff87f55bd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2045542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bd05fe5ac5f7f7f46238bd7fb357b3053c220e19934a69ec4228274ad90972. 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/TCJPS2243265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3d531503ab03198735aa5974a54a4e49c804532f58fe2d8fde7d083016100. 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/TCJPM2078236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08dbff67864cfaa2827e3c6d4090090466877ac78c224c7175e928a72224f0d. 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/TCJPJ1946887.
Still in my heart (feat. Punipuni Denki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b941154bcca075118bc138bf24aa164b76fce50d5a0037de9bee1e70ace56dc. 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/TCJPJ1922443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b61ba23e64bb59f8ff318f2169f6e3e74cf3b1c3e5625d73e0b0bf59cd7179. 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/TCJPJ1989012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca1c131d5a5979838424c970293615e9f08854e7e5bdcb9378f4d7a4b8ae46. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPJ1990134.
Endless [feat. Mameyudoufu] - Mameyudoufu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b0cdb697c4b4726f318da6cc8ef2adb3407050d932b9303825d82bf7ab987. 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/TCJPJ1989952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3254a58454ee9e954ff5abf06f3831b816c0bc4c7a7099172d22f49ac9b874. 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/TCJPJ1947420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecacbce6adcb555c88f1241fdf5e26b1ca10240d6b9268dccfcbd4c29b33bed. 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/TCJPI1999319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b99460f6163300f17bd9247cf3eb8722eef6d367b723b30e3732a7ae47a468. 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/TCJPI1997119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d77dfa7fb914b3d704c3a3022a03cf1188b36a1229f2b17da06e2940290395. 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/TCJPI1997136.
Arcaea Sound Collection (Memories of Realms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd48fb5fffc2106532b5b67989ab40a561de0f1ff47197082af290c59a6f32f. 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/TCAFM2172862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba38d081e5135748bca30b3d3b8fca3cf22f8abf9e68227f09478da157ff80. 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/TCJPI1999307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466a564e12f15eb9e977661cdc6d4003163f69dbc9204ed9debbaf4a6802c76. 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/TCJPI1999155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476bbc462ff418fbe668b62ab77b35d545bd34194a4375ae6cc8badf2c06ad59. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:44Z), 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/TCJPJ1930095.
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 0xd11987be90fb2b0bff5b199d7332dc33dc5b12f81a8c722cc4ed2fff7f581d6d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPJ1922358.
Hype [feat. Such] - Massive New KrewRemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900c0640fb012ad0f20811879681c57ce9a9f8667dfd7f05fbe53f4d2388469c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCJPJ1922395.