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 0x369af30afa43dd9651890cfea889959b0925506cbdc659a615449dd0d096c751. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0dbb49e-b6b5-4fce-b658-45debe44fece.json and https://artists.proofprofile.net/proofs/artist/e0dbb49e-b6b5-4fce-b658-45debe44fece.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rejoice in the Lamb, Festival Cantata, Op. 30: Hallelujah
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 0x8509cc52a4bfebbf5254b2b24f18eb1828bd0aa669220519e29c664379561715. 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/GBARU9600092.
Rejoice in the Lamb, Festival Cantata, Op. 30: For I will consider my cat Jeoffry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c34d6fe292b525f6762c740c2ee6d555756c3f1dc0719efa9493e9fdeea4f74. 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/GBARU9600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f71868b87ffcf608194d1d2daf869f0e4fce20840cdf8e10fa023d2814ee020. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBARU9600108.
Rejoice in the Lamb, Festival Cantata, Op. 30: Rejoice in God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe60cd5bfca14672fad0533a35f74ac973784df165243b38c887db8fc28b30d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBARU9600090.
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
Rejoice in the Lamb, Festival Cantata, Op. 30: Let Nimrod the mighty hunter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6740824b17f0ace16809d1078693df594be9c2cf246707570ce1f1ac888d80e7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBARU9600091.
Rejoice in the Lamb, Festival Cantata, Op. 30: For the flowers are great blessings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c27d6038f9e4149c7261dd74c97b0f36586b10e94b38384ceee275c8936901. 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/GBARU9600095.
Rejoice in the Lamb, Festival Cantata, Op. 30: For I am under the same accusation with my Saviour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a1025d921dab0cbebf240a1d19eb26cee98fdbf0b000570c2e3d7b0a0c41b5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBARU9600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb69fb535b030d7d828cba3e8ff20627302ed2e21b0c99707d39cfb5283058. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBARU9600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9420a0f4ac78ab0961b37d87cf15d446558e4c72dfcc2004fe91a659ee644ab. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBARU9600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcccce8394af778a6491c2f08957f727bdd93f9b98cfa06e898346b694fb9471. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBARU9600111.
Rejoice in the Lamb, Festival Cantata, Op. 30: For the Mouse is a creature of great personal valour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c49b9a31a6de0224bc3cf1678e06dd8a42b194dec4764f66c66b856461bac1f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBARU9600094.
Rejoice in the Lamb, Festival Cantata, Op. 30: For H is a spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27844a1e940bc21a1016da978d02255437701eef93de2de38d2a4c907b996658. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBARU9600097.
Rejoice in the Lamb, Festival Cantata, Op. 30: For the instruments are by their rhimes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb583c4678e9cd6d8eab249b9bba8a83574e974389e31d25ad292940b7f8d94. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBARU9600098.
Rejoice in the Lamb, Festival Cantata, Op. 30: For at that time malignity ceases
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0ba544b5d7d4755d811ec01ad03e3cbd650c619121457136570dc8e63146a2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBARU9600099.
Rejoice in the Lamb, Festival Cantata, Op. 30: Hallelujah - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915be3a2240960c99792c60ead9c902fe289a0172d7f4959a387af7005ddd6bf. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/GBARU9600100.