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 0xe2e1cef970f8d8cabd36c1af5372cf667c9b7f9d28d19f5d7cd7601855000024. 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/963ff01f-8f57-4413-8423-e26aed363b34.json and https://artists.proofprofile.net/proofs/artist/963ff01f-8f57-4413-8423-e26aed363b34.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 0x74cf2b6649f1b439f661799d48cc104aea74460f595e376ddc08e62828944658. 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/SE5Q51902439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be300aa24d2b9a01885be9986e33c4043a95a3f4d40a02f764e000186a6f56c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q51902438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe30cfeb93af5dd71a436b01465d07aa0f070b1c1c0e1cefee441fe4db3b85d. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SE5Q52000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3266c7a4bb4944c9ae22b60c0eb67e23d5bdcfe4e32fcbec5cdc31a1b5ee6c27. 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/SE5Q52000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9106fdeee26add93df2ef5d85b530de8e747f33e336b9022a003e0e0613927fc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/SE5Q52001767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36503c4ce1bc4b35e37099edd207171008843a7343ea89f285de6707333403f5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SE5Q52001645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e1f7e856f665e51dc21981bfb4197cc6e1ef7d887f6a6d135ef51cc881bb2b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/SE5Q52000318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf970912d5a3d89100dc2a70cca96d848185af74aac80214a9536cb15b26a3244. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52001494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f65775cf30afc2af560f6e3c081c3570b27ea569abdc2eca71b5ce61b6849d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52003634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2476505935e11f4bd7fedd163c2ce7273bff377f784b1288df3bbe30029a799. 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/SE5Q52100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b248c73a521836de757a5a5ae5b8b38a09f0014fe31cda3b0440f035a5778ca. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE5Q52103135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2403de421a73ff1de70b4ec4574fa3b715803c8153d200a73dd60b9d535e0bf. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SE5Q52100267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692e66f042f30fa830780d49c0da7100262bb69260562dc6c5d7962e4662a3fa. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SE5Q52102580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5c7143f43bd1032b6034b727a893172feb7b26f3ccfa2bcc91541847db7454. 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/SE5Q52200798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfc7736491ea04a9a136f3d9226e510a3271ab25cb96f1221bc12e6bc1ea528. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52202154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7965d52228f418745cf1d28086ce80d38baf7f00c348074781d637f35ba5614. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SE5Q52201808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2dcde64ab81df9484f6d7bd742e9848bd1a336a273e49af5ba5bd63fb3aa20. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SE5Q52300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3752e714bd0ee65ae1966977ca63f8ee23a0da4827c4ac034fa3d9df7bc2ec4. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/SE5Q52202907.
Epidemic Presents: Crates (Gouken Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793577d138fa8c3dfdd931159709bda0f1151d2a273bf755a32920d509758355. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5Q52000325.