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 0xf5f26407e6629caf17811d70a289b4c32189d790450f952f1c4161c375f641b9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e0e1c08-52b3-4a36-9720-d051c707bb1d.json and https://artists.proofprofile.net/proofs/artist/9e0e1c08-52b3-4a36-9720-d051c707bb1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kingdom Under Your Feet (feat. Jose Manuel Tts)
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 0xcbe6c5074de0d178d728510aa38716096964115afb27c10d48e06e23056c35ed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADG1732455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2adb24e39bc9c7e10912cfbbb4ba865e245f6f876ad08447569d4adb190e286. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADG1732457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dd16049a7752a7a38ae3d20fc8d3d9ef11259513119c8f5b4357d684ebe525. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADG1732458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa432aaf23d293c607e0ae970db4036cde547cfaff4e53c1a7eacf0d5bae10afa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADG1732463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e599b4742dd5f164a2e599657cc282b2561e7b782d50837e234f6932c8f19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADG1732475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de83e23111524ace56a68470965b062520ae242121da6d66d21cceadb8ff97. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCADG1732476.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2f9824e8636fa571775501be75cebe2d29054f9f39a8e9051952b6eb673c4d. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TCADG1732477.
Septum Signa Inferno (feat. Luke Griffin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2badddb5bd6f1223fe2c51513b829786bcff3ff86c65b714a5ab7856e2b85c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCADG1732478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f5ba4c3fdc51c80cd3236ce30fe30fcb9b9c651c6a87178def237bf78d649. 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/TCACL1645250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce6ca4552874f2e082516680264bf10f79215fa8a87e8cf16b299a7edc63e3. 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/TCACL1645251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0155ed5895550f9c730686b6502521656b27afce5eb66261b05160f72283ec31. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:55Z), 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/TCACL1645245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e0ecc6a52da06bb3879f54b6c5f254890734a23ab48a12912e11b3700b128f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCACL1645244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588734e6465192a543f8a4c10780f5898b445443a9101cb3ae3acd80e153b89c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCACL1645246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c81938a3f373c81409203e718aca73c8880a31d6ad541bf3b751d5712c005b. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/TCACL1645247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf801cfc629c80900b3404c21b38d66d73eed31528570e5c7a012cb0326ad05b0. 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/TCACL1645249.
Kingdom Under Your Feet (feat. Jose Manuel TTS)