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 0x623f3ba7b880b3eb638d58f57f6be3a0f903ffe72cd5532de72c658dd944951b. 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/7b80832b-b4e2-4ec5-b72d-9c1513aab792.json and https://artists.proofprofile.net/proofs/artist/7b80832b-b4e2-4ec5-b72d-9c1513aab792.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the summer dark § Of the thirstiest heart § Knocking woodpecker
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 0x160c3a7a8ff2b09d0bdb26176f09553462fba36d3195f27019dace20550e3c7e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:21:37Z), 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/CA5KR1949371.
Throne me § Trunk smooth and polished. § Refreshing waves.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf60054c1023ca754eb1592a144357ac5a741fcc1872d803119db7e0440c5fc2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CA5KR1949372.
Lights and Darks § Overlapping § The wind goes down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be45eeab58e206a1a22ff65cd292d144610bf42043f81a241abca5c77d1d60b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CA5KR1949373.
Cat's tongue § Rasps on striped fur § Scent of incense
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7c172cdd3fcc8c8db39c174e02e4ae2c470ea37b7f3b70f77cbb836e6f440. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR1949374.
A green October § Raising heat. § Falling stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c513628addb4c1bd6a32c44d98bbe64eb96577b94c7e5f7b028156b81abbd81. 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/CA5KR1949375.
The autumnal crickets § Chirp Chirp § A word does not fall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2900e374514a85d45ba3b048f4f9c72bc1d92df47dfb49569d03b1f8d56417. 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/CA5KR1949376.
Smell of milk § Feathered warmth § Embracing the night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914a13bfb7b50a6da26c33412e0b52ddc25725cc7561b45bc10c198b2e399dc9. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CA5KR1949378.
On cold skin § Pungent tomato sauce § Christmas Gold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9fa149a8943d1b8a5bbdbfff61fbd2ba743cfa9ecef4f3774aaf0812814583. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CA5KR1949379.
May or November § In my heart § A cold wind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746ba0d06d2da11db5ca68724fcef7a14b929e94743e515ce852969dd533f2f8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:47:30Z), 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/CA5KR1949381.
Luna soffice, appoggiata al mare, cuore placido
Luna Soffice § appoggiata al mare § cuore placido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd045d89e03257507a7061f514af35cb41678e380b5f3b68e723b20e56ef75b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2080681.
Lacrime di sonno § vento e luna piena § Chiudo gli occhi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecfbf789e638d4abb322ba8bbaff701fe356e0a3c82b88304b3ab2a0b6a0593. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/CA5KR2080682.
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