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 0x902d338bb708e4a9d0f6599a4874d0ff1059c33c3e9578d26afb73ebfa89b040. 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/d0149190-411b-433e-a963-cd0352ea5d73.json and https://artists.proofprofile.net/proofs/artist/d0149190-411b-433e-a963-cd0352ea5d73.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 0xbd8252caf3ac5641a8a0d30911a0ab0a316afec2ccaf8f3ebe8c3ad005c7000c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTAU2449571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31b78f44baacd6b8b48e9946a31fa25a79b5953240b4c3da1f2972b2ef3940. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAU2449572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601615a19b49e230039c659cdd24d34101597ec8ad7b9cf98bdc572e9ceee520. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTAU2449573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed8d21d040cd03f1f3d5543f636c5420da56284074a240fdc42f17cc6b7ecb. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZTAU2449574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac5be2c97c74dbc9d08453c760305bfc10fd4f98c7c11da4e1ac21766a3cf7f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAU2449579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d33c264d1d920a51167d3f89e9140eaffff54e638bd6c83e3642ab2dfb22c2. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZWFL2425825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f6cfb96778b21260b0f40d26e603fa45812db414281300560aade1de5a1931. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFL2425826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8d09ded9d7d35de64c19606aa2fa6523b4036b0271e7d4a470e8c7046beafa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFL2425827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82949f37d92ed0e90527f1084c22d824abc3e7709142c8b3f7a56e7487d573. 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/QZWFL2425828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d639fd01743a667294b48020c805718a604ec0aef635a03e2cef56673f1b11. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:23Z), 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/QZWFL2425830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c8217ae9ea055e7f2c6d5b90fd900232fc44c09f45c4340ab3309d1bf9986a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:51:13Z), 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/QT3F52512210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec03fcbb78e64cc1333d29196897cbca557ef702746cfbc2f0ede3354525d49a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F52512211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f5897c97122f02b516bb1076c99cb626940ebaa3a7b3f880ba411f956df965. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:09Z), 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/QT3F52512212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2852a7a760d20809eca2962750fc26d774a4a626becb6449b3a9fd9d001b04. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3F52512214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8ff98fe6be59d1abc9e3d45ffb5b8efebaae325766afbc94390ec7a9bbbaa5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3F52512215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f4f22d637997ac2b990c9a7948bbbe42679574fd6c96745964349b12a161e8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT3F52512216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585d116a52fa365493a4591ecc6e1b44e87217d58a92384c2d5ea745708d7fc0. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QT3F52512217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f94ee9bdab8eb6d4df40100eab1fdff4922701620669774f4a8a96551d156. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3F52512218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5db2079bb23d19adb23af2a288fa981c8424761270f33380c875e1da73a17c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F52512219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9289d07db655a4c48c08818217a6099cc1dc97672444aabb7f0b54d63dd39e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52512221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e65e4cb6a2a05f9e50f794571b790e1818be46323b9d922930f6199f7b4f488. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:11Z), 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/QT3F52512222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09c5a6fe6445f339edee95d5df9cc9bb9f6496175ec88dfa5ebbdbe0eeb9fa. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3F52512223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ab5530ca33776f798a78e06a8b55dec09bd4e3aeb1077082225a6cc58bb8bc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3F52512224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8ea66d9d74650ba985ce1fbc2f99bc47ff4798aa237da35a49b3ad7e8692a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3F52512227.