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 0xb0d86ecb57f2a2778529026830eabbea7f1a92457f8cbc3d0f105f795d3379c9. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/debaf999-f2de-4a25-a4e5-e8e21c931153.json and https://artists.proofprofile.net/proofs/artist/debaf999-f2de-4a25-a4e5-e8e21c931153.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
E5150 (Live in Seattle, April 24th 1982) (2023 Remix)
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 0xf1794414ecc185f2380ff2a6d2712263a708427e5cc6d870c016bfbda9ed19f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200278 — a six-check JSON result.
Neon Knights (Live in Seattle, April 24th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a479b41f3c035fb5163650c99268da5c9524e4a29691a66f1cd207f56955105. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200279 — a six-check JSON result.
N.I.B. (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ae4c5c654dad99366b082a27e0d0b26edcc9fbb2a2a2be2791b07145cea39. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200280 — a six-check JSON result.
Children of the Sea (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28634e38df7b1abe565061e235228b418fda4038881d8dd2af27271803af4b0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200281 — a six-check JSON result.
Voodoo (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb0d0dd527d020dc790ca53cd74d368c856a4b3ce8fbd299843937606063bd8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200282 — a six-check JSON result.
Black Sabbath (Live in Dallas, May 12th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed0de89533ea335854741ece14cd72c8652399f874c47d21fe70d8b1fa26a58. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200283 — a six-check JSON result.
War Pigs (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0922419657a6dd8f0b29f92d6c9a3c347397a6e8852574173df78d2ed6488020. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200284 — a six-check JSON result.
Iron Man (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e49a323a329230c664d1b8e586905734f38fb486c6ae5ac77a5f52d80f5583. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200285 — a six-check JSON result.
The Mob Rules (Live in Seattle, April 24th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d15ff64080f053c8a5c1d4f730671bce6ef006e8d71dd664993cb68fba99540. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200286 — a six-check JSON result.
Heaven and Hell (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545dcb9aa00826549bddae19c3c076e24fe54f061809b04008320645d605622e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200287 — a six-check JSON result.
The Sign of the Southern Cross / Heaven and Hell (Continued) (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70015b67082b34302045f74e7bcef803d47971830b432fedf162f52dd83122d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200288 — a six-check JSON result.
Paranoid (Live in San Antonio, May 13th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17596d6491951d9775cfb1d6692bc8a1663a3ae73acd389092e0c18496f78207. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200290 — a six-check JSON result.
Children of the Grave (Live in Fresno, April 18th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07828cce2d23441e797d555c214f0df4067ef47a6802710e2f53fea5c7e1723c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200291 — a six-check JSON result.
Fluff (Live in Fresno, April 18th 1982) (2023 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00138b3736f1ed3e7fa41c18387d9a526ce88bed8fc126d97b1431f2853489f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRH12200292 — a six-check JSON result.