thumb|upright=1.1|The Destruction of Leviathan by Gustave Doré (1865) thumb|upright=1.4|The circular salt sea Tiamat (green) and sphere of cosmic freshwater ocean Abzu are pre-existent deities in Sume
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 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 0xcaba77594fb2fa669ac252f106f2e2a2c6a6d50461f3608bd857a7b9159543ca. 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/1c213d56-4b53-4db6-b804-4cbac0b55b3d.json and https://artists.proofprofile.net/proofs/artist/1c213d56-4b53-4db6-b804-4cbac0b55b3d.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 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 0x0af7f2cb5c04fec280e9f1011e3a1425216fbea1b25af5ebd7c50d9c65736e4e. 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/USA560456797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1dec30505bde08a179a2b50d2aa36c57a030cae0623bd21b1845b696c5d8c. 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/USA560456798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6f78d7b2c047946515d2189139bd9941755fabfa1c9adc0fbf491b9121b7bf. 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/USA560456799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288e5b6b126b05b9a2e990c6dfbbd0f23a1f48ab3849027481b9c7dae1a459bc. 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/USA560456800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc4006ead86510bf9e727da0c80966fa888ccc5fdde8f938b9495cd90411e6. 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/USA560456801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16d1bfbed35af86e07f0322533b53e14d08ed5c3931b674987449906fd282ab. 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/USA560456802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ad7ac6bbbb8f99c79c33810b79e3ad42f883be807a4c174bf4fa4701e3385. 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/USA560456803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd3e2b480ab217c22b69a8e69c70250c782b446de10d2186d092b64b3fa0ef5. 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/USA560456804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb570ea9fd15bbf2a4827cd472e5cdeb5e733dd35ad3e25b3fa0206b39e5ba1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA560456805.
At the Door to the Tenth Sub Level of Suicide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580f97555fff0d2156ffd7b43eb388fa12c1b800404f0485cbb40c9b6190e140. 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/USA560456806.