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 0x1d4b7fb5f66de805e0ada281ac368d5f4cd4b2b5dc5625921fda951cfba0883d. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af67c6bb-0b9c-4157-a927-d6b7d5b6bfa7.json and https://artists.proofprofile.net/proofs/artist/af67c6bb-0b9c-4157-a927-d6b7d5b6bfa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Long John Blues / Dr. Long John 2012 - Jazz, Blues & Cocktails Part 1
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 0x669480017ca45f793ca47d0ba014fde3e676d3c68913814f598e281aa8beb031. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMY2W1100236.
All I Ask of You - Original 12 Inch 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e5cbcfd3c40c551ee56decb2268ad9cfe041a2113608b1b60f8a279d2ae73f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMY2W1100207.
Let Me Take You Dancing - Original 12 Inch 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4ebf21b7cf2c3ae03a5b82a275289e2d43eef54473e569443db6c97e0addbf. 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/QMY2W1100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4ebf21b7cf2c3ae03a5b82a275289e2d43eef54473e569443db6c97e0addbf. 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/QMY2W1100214.
Bring on the Boys / Rofos Theme - Original 12 Inch 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8476c0242fea846286ce45524d516ed56761284ce7277a5709e2bb2e64f275. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMY2W1100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2400f125444285ec0b7f27fff9c0fdce275c0e9198e7894f728f85bb32241371. 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/QMY2W1100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f890d71ef59c7caede0ecfe26bf6e38f257ed0c804432a7b0a12ff649c03dd. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBEFP1208601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f77a293249bf42efd0db0906162220a406d8541e6c65b3c9bf3ffd907559dc. 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/GBEFP1208603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6002b73c3c8426d70b31f0b85888ea9329fcb2fcad9088860a1a9aedd45d4559. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBEFP1208606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c4a42db3210ca091d7143490669eb910a5977133fea43a9bacf3ce0ab583d. 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/GBEFP1208607.
Wind Beneath My Wings (Almighty Club Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d865621c4896c6117a603e06304e54213c528e2a1d7ce64decc8f8cf737c011. 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/GBEFP1208608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68896dee1baac8f6fd2a952c67450f576bae0cb6b5808c542ab5341db5eaef07. 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/GBEFP1208609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160baf7c91127f558e8f196f7108efa57adf6b5da9b9c961ddf818df19395db2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMY2W1100193.