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 0x31c9fa3560c3f3d351cace5aef15a4c4cd3eb02858e2493779700d7b7f70676d. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c99a888-4c7d-4490-8a22-0f799c232041.json and https://artists.proofprofile.net/proofs/artist/0c99a888-4c7d-4490-8a22-0f799c232041.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 0x5e2b1f92af992ea65e819ad4f49d5b3a3cda683bc3f19be92f23e3bebfddf86e. 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/INS171901612.
Gramophone (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c7c7bcdf403c89228a49d2c60e5948ae4d31b1e7e1331077b3c0f5278e88f. 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/IND291817620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4979308dc9db985d8e4491fef3ef4193c54079678e87f1415eb07d395d1e4235. 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/IND291817623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570ee4a4dc60ed28df9d60125b6ab87872bf0c039c8e539205f02ed731859418. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:24:43Z), 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/AEA0E9209254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af96096e60c6e7fa3802c5dbf75ac75dedae5cbae268f04f49be6fc3f2fbd04. 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/INV141100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc621815058b651c4e8aa48f4e34a6846128eff2d1766f330ccc6797b7a332894. 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/INV141100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89562451db77c2a45de8efc83d56cd8162abd276fb4c91f9dc91dde43922decc. 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/INV140700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc09f3222633ba18842fc77c1bd7fabd195f667dacaedf9be6b97dd9021a087. 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/INV141100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797b879424ff5fa2772836dbfb5f039b340d882d8c9f4eadfe3b2cecd2f838fb. 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/INV140700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620dd0570610eabc844d1c042b15365b69f24bd7ecbbe99ce27f26c44000a2b4. 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/INV141100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1160555f923376c223eed98e79df5d2ff41916efe75f3c98c2e395afd6fe8f0. 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/INV140700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1160555f923376c223eed98e79df5d2ff41916efe75f3c98c2e395afd6fe8f0. 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/INV140700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f54ef5848293ecf37cbf10513074723638e0114f672656bfe102ca83bb502c. 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/INV141100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc621815058b651c4e8aa48f4e34a6846128eff2d1766f330ccc6797b7a332894. 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/INV141100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89562451db77c2a45de8efc83d56cd8162abd276fb4c91f9dc91dde43922decc. 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/INV140700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e538ca89fabc8d5fb956cd8935b976cadce0d03d6b0083ef08e8b58010407f. 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/INUM71001052.
Maragdo Maro Meli - From "Ver No Waaras"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8c2858449ea90e12ab9725e8dbdcb4f0175dfe7d2a180f7e774f040bad8d19. 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/INUM71001004.
Khaati Mithi Vanagi - From "Mota Gharni Vahu"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d9efdeea181fee73a3f03ddfad62b223fd184b1e5354eec985a92a229186af. 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/INUM71001069.
Limbuda Jule Tari Bagma - From "Koi Nu Mindhal Koi Na Hathe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927dda1bf4aa5d938f75a8c919a46fa729702dd241bfa44ed8d01b04f807f9b3. 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/INUM71001109.
Jagna Loko Mari Hansi - Pt. 1, From "Vaali Bharwadan"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173a2278668dfa170489cf55f57f3b4cbd0dabe9b161b9c5c733e42252f94d0e. 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/INUM71000997.
Aasmani Rangni Chundadi Re - From "Mari Nandi No Veer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6314542c9c7c67d733d43400cea4a1f06b2402a2beb30e0b3439e1e742de5f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:37Z), 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/INUM71001146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024fc8e7b4da6b48bb78d4178e477a5ef551246e44e2a3f127037ebfa4584b3d. 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/INUM70500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168d65ae206a3454b0b3ea3b5e9d55dbd6dd666e13e8ec992fe2a0727561e8b. 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/INV140800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065b1b922bc6732146ff1f354530c8bf15902ac4fb4269495a3be791d41d8a55. 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/INV140000016.