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 0x41564e5e6a0ed59ff689d9dcb6132e31c033125e17b4617fde5088d3c063009e. 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/cf2457f9-bc09-45d1-b8c4-f9a242cba060.json and https://artists.proofprofile.net/proofs/artist/cf2457f9-bc09-45d1-b8c4-f9a242cba060.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 0xc5ade818fcf0905efc03159c35aea09f92bf6ace7117fc1ba8c9caece4576c19. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SE5751988975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef14bbd66fc46895bb74f51463204948907d424ee3bd1b5a471ce45dda0f4c. 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/SE5751988977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34207ab318d7e8be212e5b0abc9c1b90cc9202ff984c057ee863d5d309af99ea. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE5751988978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ca2123a7baeed98e8e5f8c59d0e41042863ce6b87b35cf228205fac88e8529. 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/SE6HN1977512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b72f408a8ff062a1460a0efdbb13c5b9488c47d6af7a7d17e04acb141c4d64. 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/SE6HN1977515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7327c66f57e336d3e83613b048b46db37875779c3adec37677b9a98645d5670e. 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/SE6I32004979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735eddc1aab1c784ede40520743be1e1a9019896daeb6cc850d1d8ab0863be2. 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/QZES72050850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048f9d4e87bfc44ac3fe4dcd9bb0a4d0115828d8ce3d8b7c4dd2b08b28c6cd1d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZES72050851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab84388cb50c0d2a2cb78c5209a5be5bc3e1d267c0119b53910054fc78d56a5. 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/SE6I32050712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a5e2090cc68b609136763ce403f09893631f05070ee529a65a0680fbd07886. 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/SE6SA2055944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3471470a228de928731db3557d33c14e19b5f0c6b423bbbf82ddac5c3fafcac7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6XW2387784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4439430bb3d851596b2e635336d70adeb969b3ca0a72fa63e726cd102c6be169. 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/SE6SA2307542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae26d69fede85bf74fd5832c66a7a752665270f7102b6b15b96e2db7cf31979. 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/SE6XW2325278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4959cfb7885d71d19f3cf362d46cfe51189ee8e60ac7408671fc6c38702b69f0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/SE6TI2311305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8739d737de99c35deeae62981d9203d6064b2716a5bf74a8e41f5f8c94aee. 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/SE6XW2346610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2f6b8261c7d95370434ca7a50caceaaed7c1047372d37890005a97f3a1472. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SE6TI2398199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9042dc3d7a08f250bc4a7be9ad024a93004f4bda0e964997461ec0360175316. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SE6TI2381037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3cd6a50c1a952cb7b88fa40dc3c2f675eaa16a107cf786e7f8916876d8d698. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/SE6TI2339407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eed5926121c24c8fd41a30f71a44d66cc3910ec710beeaf50845c2f3e57c25. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SE6XW2376530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619713fdb13e5fc559352d6e669484f890de4291cf05c861a07a8b3edb3ecd9b. 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/SE6TI2381482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc197314dc71fc13ec0b290e84739486877c4d7561f84cf45b3fd02813c2fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE6XW2382721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7baed107382d8c8a9b1b279487429a0078e852dc5cd1a5bb86cf322d432701. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SE6SA2390506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38529ba6a55f06035d61c2cdceb91d9dd0d9e324f9a95da3080c8f7274cbb5bf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE6XW2355757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353778a22cb7aa05811aafe949d11c08ceee9911a536c04a855cbf127eb745f. 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/MYSZ32410005.
Sabar Sayang (feat. Orang Malaya & Yuna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8dc9a0cd682c4f2c90aaa65023d98cf61813ef70e14443c8d7f8f434850c5. 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/SE6SA2455594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b380153246d9f42476cec8e4e52997c9fcea91b01bddfa9fae6ec5d2993e2d6. 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/NL8RL2457210.