1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4f25225348ac6d1bdbf601dcbc14579c6bc61bf2594c4875d78d3a206b92d23f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da0a1454-0cd4-4513-bf42-d7d8fa739163.json and https://artists.proofprofile.net/proofs/artist/da0a1454-0cd4-4513-bf42-d7d8fa739163.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 → block OTSBitcoinBlock must exist at that height 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 0x5dcb7113ed314a1770a8cbcf6ecb739c9ffba6e57285cc00f3d0452ac75251a9. 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/DEZC62353095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d5956349ba5b2e1131ec4dd43e17929ac2ba20839fd54bc2b76c6e1316bc3. 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/DEZC62353096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e7e5a088b8d963a2b189c2200d5b72bdc8c0faf6fb51e64a178b85454972e5. 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/DEZC62353097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df10da55126181ed3e7466eb17b55125c45d97665a7632ae0d52e8a8e71653f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DEZC62353099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877b40fc9446def0989cb3d69dd564900e3411b2d1f959d7fb5357b8e75e55cb. 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/DEZC62353101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b90bcc422be28d4770a704c9e244da31e6f1a34c1561df2f4cc1e386645df. 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/QZTAZ2481815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee6095ba3657bb1317830494d3476ba49cbe4dd396482b96607de7f16cda4e3. 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/QZTAZ2481816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec52c96531d0b146be38408ff83be86bc75b94ae13800a7639c4dc9d3800bf87. 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/QZTAZ2481820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923c79823af27325ad6d8a5426c4b31d99c7e5a41b5761dd971c44824c46183b. 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/QZWFN2371774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439b24ada631691e4640e24356fe22137474c73a89e8a043bc58d3f90c8db35b. 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/QZTB22356742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e49a01cfb14c8bb6b9a6b757a964e81b6523363ade53b0b67428b2ef872e5. 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/QZTB22356744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea431b04f133c28c76e3794fa826a211d7cbf67bcd0b93b31ae71019b0afbacf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB22356745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379177d3ac2b8fefd202c4f53ede0b2a0f928a3a96be9967e5a999165954405d. 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/QZTB32212075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34727bf81c7e4b8fec86ba83cda934755af504b1a0ed4bbd46a03fa9a20d203c. 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/QZTB32212078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661ccb6d6f2caae873128c388ab761678e97b674c71befe913b95fc5052345b0. 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/QZFZ62200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af9128457c81853463b427db37241e2ca9c01ddc3d2cc4aa2dc0001ccab692. 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/QZFZ62200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe28d721b8b8d509a7785ed73defa39a83f2e60aa815b8966ee4ba3a402eb65e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ62200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ea0275dcc542a2f46178df571a829ea2b1ef8bee17086108f8cd2d8e2bd2e2. 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/QZFZ62200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419e662de6aa62ba86af8b4c1cc9de861af089186160d66958b458086c350927. 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/QZFZ62200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf73ba44295b9ac3894b683449f2f06cd4e03ac90aa3588984ab9ff0108c5564. 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/QZHNB2026262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081138a7c23dc1293f744579a15eceb395c5b9a2ce8056a90789c2081fd9c4c5. 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/QZHNC2000671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b817d81041285a00e807a5f3850b52f4ba254cbc69c1f400d18449c8170b790. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ42428469.