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 0x395a4f6702405a2f93a585c6852c3debb16a82b3a125067a93003031a77d9b57. 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/e3c49087-77f6-40c2-aa5e-a80d137a4b23.json and https://artists.proofprofile.net/proofs/artist/e3c49087-77f6-40c2-aa5e-a80d137a4b23.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 0xc8f1a9ba5816e938196e2ddb6429009b04e07e35a4b54ef160b0279a17abd869. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IDA191302012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b81ace5695074c5abc12240bc3e36c3db6fe37c038ca03e2b7c3977422bac45. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/IDA191302095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f6976d680e345adb84f39533bfd660f5606faff2c83988784922fc1b5858d0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/IDA191302178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1b8629d9ca759ab22b57fa2792cd876690bb696a1bf07c1d393cc5ab76db72. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IDA191302176.
Bang Toyib Kawin Lagi (Roy. B Radio Edit Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84c08bb3b8d16dd64a247679d52a9f8ab8370134db0e98967590984937dbc48. 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/IDA191803252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1300603f8d0814917bace8f66ad8ffe7cc95c2adce6f0c350cfba2db02069c0b. 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/IDA191703203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea6591938a8f6855a5f24d063eabbd3a9e17fcc36ed855e821eedddba115720. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IDA191703124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483fc1c392a40c90f2a6916efbaa70dfde2fc99ef029c2d7c0077c5910f0c4c. 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/IDA191803347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d5b66f8502069e280a8812ff690196d6e8491ffe5ac3cdea1191b064b0f46. 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/IDA191803348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e6faff1f12eca13418bb81ba06a09ebce54329aae84c636dddcaaf3b373a2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IDA191603055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730d8c5d3193e465a01f88dd63b8b77b3f878512d7a4c81271660b19a2a0c13. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IDA191603056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d2e3248c5a5d5b9fbc657e87c530689c3023dadcb0c54ba574980a779c0125. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/IDA191402858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf633cfb8e202fb8d3fa10f44cdbd052d8c39a27ab806ebf8fad170a798657f8a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/IDA191602935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3eb95957c50912191822ef83ee9864cc4c57adfce7e3804590caa10f2e87e2. 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/IDA191903482.