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 0x05caf771b0cf21b34c855597271a968cda8095c730c493e06b3c85c6ed5ef7bc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b297e1fd-910e-47de-a2fb-9f47286a589f.json and https://artists.proofprofile.net/proofs/artist/b297e1fd-910e-47de-a2fb-9f47286a589f.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 0x1fad9ad65a8376557850efd3c802121fcab3ecc43fd3ca7b6ea0f548b7913a62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF22401405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb93ea841e1df89f3bf124a9d5d92e659c5ce681d95936d1bf7fd04a7cf2f18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA622400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bccaf734b975e57feea517c3a999ef5f6923bfcbc730f66a29e89eaf982c04a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA622000741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5a1b4f7e7b9e9c50cbc736cac66af93bd89ac160698b77aab23eb11ec9e5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA622000749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ee16ccae7bf237f94a2b6f52e23a0892f416e7f6d5da8e0588faf62a044756. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022008862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bf83129aae2e2e42b32f7cb13fa3df8dcdb932a30a9d9d34a313ec0c9de3c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ021902873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969aba414305da977d00cfdabcc609a113dd085e551beeb18454e3bec355ce97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF21901109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87abafd27837d955d1c5deca278f22d0b182cdae47a663052ba307b23178abda. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21901110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d8a42cc7413ea05a9e2e45be9e3a8567de63a212f548da04196167ba010a58. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF21901111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01dac28d252630afd465419347cb786984623af98805c59125f4877bedc9f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21901046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb5b1893459ad5098ba5c7a278f36e66901365063d2bbf1682c9e33233426b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf40eb859826aa8304068c2958314154e9f6fb33fa729d2aabcab0ad051e28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21901112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ef83279b94bb520655ee54e45de69b4c2f553667c8efd0df9d2fb717a57a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF21901113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f964279bc49aab64d44f4d22ff98e1431df1e213bc04aaac6f82d00b52475. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF21900448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0e112321f7ca62ffb8a97b4940f18137c6d992306672cac18db865172c9ddf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF21901114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e6bd15ab69ddab8a697e6772197c4c23d834d8b57b66cda2a28e0001597d1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21901115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82215aa08dc31d2d9b4cbfe02d5d9b2aa757590a73c5e2bacc96d0b4326c2549. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEKF21900904.