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 0x21c898a3a6a4ae767657d9fbf51a92cbf189d18f03bfab70b865a67e75869049. 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/cf729f5c-d2bc-4dda-bc2c-89f1c63d879b.json and https://artists.proofprofile.net/proofs/artist/cf729f5c-d2bc-4dda-bc2c-89f1c63d879b.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 0x88eea6850222190846a76b9203b869f88b429723b570c612c6d9922d315247e2. 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/NLC732200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bee61e4a12d725c4d17326af52e71ccfd59bba35f44a0368b18fc553edd7e5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLC732200374.
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 0xd44efee1f8227a5783b474dd12e70d31a21e053b5459aadbc60caa2d2c20e6b6. 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/NLC732400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b4208997d83ff257a87c3995fed92ea947a309f7d889e0630f5091cb5c7503. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLC732400274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da9f62a5cf44f06077e53da45ddfbdec8122227f8f42fea6fa9e5797446a525. 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/NLC732400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12b71dcefbef93ecb1270e9ffe10bc9aefad81859ff7493f818dfef1b5a9741. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLC732400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8804c1b3d0dea196d944b5c51152120e5e38fb4711821cce4dc31af7872fe6e3. 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/NLC732300388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111807aacd75e7f2b0bcba2f0f3b381bf0cb887e26de851455af60229633ff84. 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/NLC732300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0ddf781a39ab2de2e92a299e8ffaf44bcf20b50f39c427555cad9869271605. 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/NLC732300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07446f7415f68b5bb675953b590d76339fbc22946f2c0bfbc626190f319c9b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLC732300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01ae757c73fa1106de874c4b73aa97803d422a60d85de480ee9f2e4de308336. 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/NLC732300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd6eb3d5a840e501ef96e453b20413ba82c0df5792a02e57f0056ab2a1c3042. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLC732300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263f8318e351fb02ee18a2dc5f264fe13e71c24cf4a3db654f5b8803d25f34f9. 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/NLC732300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c0563055771ac8eab3cd9e0e3b8498710eab800e1ca747b08359c11aaa211e. 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/NLC732300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617e2522b948fcb99679c0f4b2d4783e05836f41396804b14d68f91c33976eb1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLC732300050.
Paralyzed (Last Soldier & Farnoodex Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe718c43c181f5491665b8f5bc500ccfaaabeed941dd0dbfb9734cd769996c53e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:19:09Z), 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/NLC732200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5633fdae8b174e18700a7127439dc2bd78d6309bf4338d2015918b38bd94c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2214284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fade89bb7cd6e10534140b0c561a3582ab18c24afe4c6fc4776fd675c18944. 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/NLC732200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aab463f066c877de5109bd2f1f4b748d1328b8adfe6882b9e2a63d4c7410d88. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NLC732200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2555a252883b8c435d3ac4fb4c950c56295736a11c1e7f021d0e6aea1c6a9af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLC732100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e8e0f07fece94ad66ca8e955f557903022fa24c5136352bfb1ee47bd7a3a03. 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/NLC732100355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcc0427e9e85d9916df61d6995bbe9a0c9c87eeba65225bb431fff1fc154dc1. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLC732100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7910819a39897da1cd9a362fa41c0f7e49fa581d22a41e5514e070418cd18b1. 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/NLC732100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8b87110862e01c8b0e63a613b6b962585feb67e7204c7a6921ab5e3050b01b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLC732100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7356f343fb805a678dcd181ef87d8409b36c6588b9a6e46009ed5dffa1a218e5. 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/NLC732100200.