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 0xfe7bdedd62798db01772eb434f7e85cf8e4ac4d605e69611d74f16b430919acc. 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/fbb1bb9f-61fa-4576-a454-b84681a30d48.json and https://artists.proofprofile.net/proofs/artist/fbb1bb9f-61fa-4576-a454-b84681a30d48.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 0xda9d0abaab8429a25856b0ebcb30adc06e5323c43639a2d3d0aecf8767d133e9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEXO42399975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1a3e7de7076ab8483f482fbf97132324460e5445a01c1946c21b87d10539d4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEXO42399976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043a0515d59088316d973764657ff3e9f1fd82eb979775d0869800322fd926dd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEXO42399977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b63a3259afe8d408b01711ebba07b38725fca350778ba676ec4d8819d00880. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEXO42399979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51d46d624ad5f3d9edab0cbf84c6e5fc32f08b7665189350f86a4d8d5302f2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEXO42399980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a4d1e5560c470b0f9c613d235e132112c7a63105b626d80ec1415f79ce891. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEXO42399981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c6db3b81b0696889bd3e5dba6de73e1bedfee6e0308e3838c2d967547a65c1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO42399982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d77c2b43b7def29e2f4fbb352f2a7163ebd3a4efbda62f7cfaf6255a59e68d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO42399983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a08900ce0709f77467726a4607f8ffcaf93e1b5035a7a91fc2290918eecb6ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXO42399984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c0dfc5f7cf67d588edfcf70efc96ceac5b276f1985633bad592ec5aa74813c. 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/DEXO42399985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b5284f27d98dc1d416689bf35926295a328b710f616856965f7e4bcae52e5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEXO42399986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28aff903a25008b6c7c07b7c7145e7f6dad450982fd8e1cdeabf2964417c366. 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/DEXO42399987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca48e21adc6320e71a39bebbeb9e97826f87175c0f821e7fb5d6e0b8f8849da. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO42399988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed3c57a2ca602658f49603d07a691812f6d5c0485137756f6670e8b3b6391a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUE12406666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce0920db4c563e68d6998fa7e546f82ca21dad54b1ccceba6cc6837de48acd. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/DEUE12406670.
No one knows what shadowy memories haunt them to this day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4264e7166af83d9aeadd32a2b0769a60e2b7722bcb99f54890c3be7cde3b60. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEUE12406679.
Isolated lights on the abyss of ignorance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1276f29cb54b87823ffb3063b0e7248d5375ef6cc70afb8ff51d81849003e72. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEUE12406681.
Now the night is over and the dawn is about to break
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf03bd8805049a8467de1bdec831c5ef3466fb86ad1d032d673424c41d2a1a5f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEUE12406682.