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 0x840aa12ea07c892e24929b871ed84334c1af4ade44c731f286fb7dc05e39cc35. 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/87800038-71ec-4ab1-9d9f-eb9f2ed9542f.json and https://artists.proofprofile.net/proofs/artist/87800038-71ec-4ab1-9d9f-eb9f2ed9542f.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 0xbe4cd042ed0e89f760700ede052ed9c0eec33083f3cbb7857c7903f73e3b3df5. 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/KRB841700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1662cdae9c1b31592789329bc0f660837966ea5b4ad28f5cb83032258dcfe71. 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/KRB841700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907053ca481ac8ad450cf598ec43c5a54191925ff1c03800f4320c763ea92be8. 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/KRB841700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf946d69c81bb517b1a6049317e36119fcde9afd6fb184bb588a30c6e5b946978. 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/KRB841700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a3c80664aabfc8b05f65814efbaff540852f6e77b867582d85302d5e98e89f. 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/KRB841700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c1625e845424ff4859db66459c2c586c4611c442db8c4ea93f890395e937c4. 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/KRB841400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5818c85edd3943d4229d1fb158a124b123972fe6c35b890ee0e62be9fc1c6304. 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/KRB841400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0186674f6c3d0963ec05af340211cd837986a4025f3b323ee71ecbfbc86ac615. 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/KRB841400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e25762c5f00ded69e9dc42131569e60730851bd6335a77778d64a6b11c2121. 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/KRB841400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4a13f04fda39661ed83d0a24644349888e36ba9cfa18247035d04cc46d0821. 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/KRB841300001.
Come Back Alive (Original Television Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1763920e7e80d1b86644f66324d2991f36e42914fa18202382786081ce0466. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:33Z), 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/KRB841600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55716b3d53e3ac5b9b79d256515e73335c8020c1273d1f04f8886b5f82fe7c4. 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/KRB841500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ae89370beaf40de5668c253c881a4fab14733753055ac14f3c790476ea4a2. 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/KRB841500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106f77c314e4d1bfc19464bb048bc0c5ebef18b285935939a23372f4a707fcad. 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/KRB841500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b2ec1d9204159cac43ee7ba60535ebf798af3fc009736516f6801b7b4c43fb. 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/KRB841500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2426120dd6fdf75ea60db3fd3d0f6b6eafe6d4203ae6cd1cec85ae1920ba2126. 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/KRUM71500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6591e5886c30225faf29060cc50f204aa3cdd67c90164e179c1afd5c07f322. 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/KRB841400027.