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 0xfbe173785d2d35e67ff1561ce35ba06f4c610e91be9908a6047b42bdf9b03ee4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61d2dc6c-9b3d-4e91-b7d1-e057b85144a6.json and https://artists.proofprofile.net/proofs/artist/61d2dc6c-9b3d-4e91-b7d1-e057b85144a6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd1e62a9541abf107d1784b4c174138a1cc920397d6e504da63d0cef5286312. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBRKQ2282309.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206a1bfff636687f1a9a28b9fe81be9705a9f1b47013ad064d959031acd79db9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USLZJ2342863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55342c852fdc01cf82572427ee7de0e6401a4d4a2ff0064d635f2b4c4264bdf1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USLZJ2342908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c2995692afe50d8f6a262d6741529d3e9ae1bd7ff101d0587d6489fb6bd16. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:32Z), 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/USLZJ2342939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb711be58ebbf8e4a59d5a9c73a273707e96e3ddc0c514662f1b7f62c51b04846. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USLZJ2343157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244043b42c3312357c977d3db88fc5b575956fbeb10959f36ab634fa5782807b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLZJ2342854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad36372332fe32ec2259de77ac90175974ee3c766e4049f299c3b302ad8adc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:34Z), 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/USLZJ2342877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e794428a0b4fc0e180927f15a9f1ea8c93cbf2c5dd41dfad29df97677a4d2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USLZJ2343147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eaadcf9c83163eb2fb8fcebb08d7f88839dc9d0cab6dc5c7db2e3456b60bc6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTRX2355274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3455ac89547b5a9d47b70eec8a45987f08fd1f4ed1610ef88eb5e19cc0211c3c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTRX2358929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47006a1f2126252ff4d4bd7d7d7a27cb0942d5fe77e96de99d5e2ce093f6000. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USLZJ2342995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b613573bb7989349e49b81f08caa632c74388274e481e8a8ac143c6bdc51f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTRX2394525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d264841c420b76d70c3c30465f5756951276adc0aabc2a8ae934a0f17915875. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTV32326447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec3d6e09fd152565d57b0b4b78c6c603cba682bb018fe041f82b84d0f39e26a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWDE2304861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d970dd335e01817e37115cfca84a09537e6be4302b9040ace6a4893abec09e0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ8B2342009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf198ab119ab74d79666a99d274e103c5908041cb16fe96b41a57ad14142c86a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ8B2342021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606de092ce3f946dbdb7c768377afab39ff848dc50bfdc477a778abfdc51a3d8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ8B2345517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7441a04b879a05d49c56202aaefbf6c89639109dd034eead7cf6fdf4af562a43. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ8B2345608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060d9899b6e8299fc9273c63d7e9bf455bc5a6631e3001b7e49563d1e6f02efd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:22Z), 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/QZZ8B2345651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb476196d9ba0828573b675740803112347805b5b462749f0d6b3ec2d9cd567ec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ8B2349095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab356f2af82b5689ff8e3e2b1f9e9757955fa87bd7b55762010102594f9e326. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTRX2358927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb80c592cec23141982e96a261b6cb1743a9b8fb4280db1db3cd910dd43777. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:21:56Z), 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/GBWUL2485032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cebe0b449a4c7c6341382af55c6fcd33674cd6b91f6f17ac44b955c887284ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ8B2349181.