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 0xe830ec2f526846003bd53e0c1b1cbbb205e5cf827068c2a4d8b846d503e3a1ba. 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/bc0fd0b0-1aa8-4c83-a458-8cab7f2ec944.json and https://artists.proofprofile.net/proofs/artist/bc0fd0b0-1aa8-4c83-a458-8cab7f2ec944.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ccd06f82da46ce1cd56917491013e7a76a7f86f9b8e57398467347a36f4fe. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPE871904190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdc1bb1066e310b7891e702037332a1e502409a98a4f085aa2ac49d0ec76af0. 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/JPE871904191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9840a60431b10a79f0fb67c512039b6b95e0bcb7e6538f26d3f7dc7e993e8c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE871904192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753a43dd8d3297bb3e752ca13ddf6d8542d5c10153d67dde44d990f5f03645f3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:18:47Z), 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/JPE871904200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33a0093c383dafa21250d620f52a369b87d164cfd02841e50380120b5eafc8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPE872204401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe61dcc2cafadc520496f5ca4557b00611b23f0f771afa5c7fbc2c0bc7b070e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:46Z), 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/JPE872204566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef1bd7269d23d8a7506944244f71d30017a441ab1095211392d811e5f6696c. 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/JPE872304752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dfa2d998a80a9564dfadae3e1bbece778f3c8e1747157ba0ec52dff7505cf7. 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/JPE872304753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcd0467eb3b1cf89360ccb77e5fa85d66027bf60ba9bf9dbfe4f75071dd1ea8. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:38:19Z), 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/JPE872404999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b81ec81b1eed46d94a4acd8a90c5fa712eff5f472fe9d62744da4de9f43da8d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPE872405000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc10f0a1f903d8e41f05ee32d370456914dcfb8b7cdc70a696ec4cf3ccd1b05. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:47:27Z), 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/JPE872405001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27636a9b187c5b494e4787a2a375d91f73ee4fe3f01fc55f2ff338ccaaf48896. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPE872405005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79204689b7dc6977057b6c8fdf0eb673c4fa24372709952aa6464c9bdd287592. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPE872405008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ce4cb66a449a02b1f4ce3629114097ef13f47c10f7b3ad3acf46117b89fa1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/JPE872405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7acd20c50fd977c62f9ec3d682f8319471d970c2238e0923b840d5cb1fd75d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPE872405010.
Castle in the Heavy Rain / KESHI.GOMU.MAGIC
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998e164ef31869b58d566df494d22726df644e6076a44ba1f387a12d8457253. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPZ922503411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151f702eea416c43a1a530787c8cfec423f9cc1de311e939784f43abfb053b44. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:40:41Z), 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/JPZ922503412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc08907b866983a6f464539b43b876c8505a10e5ba8bb2303349cc05cc7b310b. 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/JPZ922503413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b770500a9b29821df844b26355455aca387d8e02c71496ca06b4fe2d777179. 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/JPZ922503414.