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 0xf88e2b6a9dfe93cf5a546feaecea780a4a68bd3ef7a5bef48b99c3d1da79a288. 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/a188fbfe-f034-4eff-8941-72b76e350ee1.json and https://artists.proofprofile.net/proofs/artist/a188fbfe-f034-4eff-8941-72b76e350ee1.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 0xd24b51d441d76009197b644ddb58b8b30c372e62c02b8fd253a3cbd3cd4cf356. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX452442378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99c87062f8a9888ba7f351930976e83258dbaa6ffa031d641dd0498818d12d. 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/FRX282460219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b45609e4c50ac775f9ca181ae627f1d1d52f4f8e30d3ac5cf9c088486e9ff. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX282477378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa8e5056541d826902a8ef1223874c643ce39594f05f6e01be34eb1bda6ee1d. 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/FRX452442367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895772f1b1d6625e56529a7066212bc3fd39a956a21ef2de67c0a1bf3d2803b8. 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/FRX282460347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94580de67c7484fd71b31e238fcf035abba0bc32704c86b6449511bc7c1f6c8. 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/FRX452442377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e4592e19b1b68629446790fbdb568e5bed1d4b4a84740ccf4ac54ebd0680b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FRX282460275.
Mən Axtaran Səndədi, Sən Axtaran Məndədi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54753f161cfdb0270358f0e25925328d647a3c04ad6f50c9e46bd9004ca93cd6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX282477370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1959bbe25b438fb496a840e1f6fbd0b429b8fb34765b880fda333746f8b8dda. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX452442369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21eb0da938b021b8f3d060ccc59209abe96c388bb4cbca449c9c644a79099a. 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/DGA082272225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066195382c9a8924e5823bab218bf0f4da7cc861c8d8be9f8e95db9579da3ae5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DGA082272223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6362dd07a7567c6de514846f0187ec87a9f7637517a848a5af3d75303515d738. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FR10S2351852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0ec21ddd7238b6f6bf7e0fd61c5b05dd651323af131d34c9d36afa57639d77. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FR2X42399443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4a27f685daa8cc7cb30f56fe0b8c58d8a0e2f0a6ea85174af07e312556ebbf. 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/FRX282306778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a1e143ec90823dd4bf1de50744f0329fa604c731f455e9c53f6b210e75ff2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX452325331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe336c77447acfcb5a42d5dac1dea68bfb161e325407eed70484eb36cb5324e0b. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/FRX872340158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e3d4a58ccf69ff5fc64bcd2251b681cecc28751788b55bb6ed4b9fb4a893b8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/DGA072301178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01152b29d947e8faf2fabfd3fdb1691c63bff48ba09b56471e5a2e623ecce731. 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/DGA082349521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecad191dcbfb6680d5a84aafaf3522e3ed15afdc0efab240b877351cdd03755. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DGA082349510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71b9c8ecc7d6856dafb34e00bf7a02a66f2a738cb58af8b9980e6bc57bb466. 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/DGA082349506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bedbf2fc714126ad92bf0ed161dae872a1c53f07cfeeb4d599fc264ad84fc5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DGA082349507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e507d6adf6fb43ad1077756ef0181e58c67b6d550ad2c99f116afacd7d982f. 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/FRX452442363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c506e800671aefd91cf60438c12e352a9d33daf639b69ec9b9166a51458d7. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/DGA0L2407422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f9cc156b8682dbc4855ee08316a911a820dab2a2eb23a9328ef8ea5cf0c28a. 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/DGA0P2446916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f72462c299111f69d4734c185287597a2df5006e12e0f05244af6915164f3e9. 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/DGA0S2427524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08723a35713a3e1f7c8a652ff9860aa6046e4869310ab26b87b36a4c297ab44. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FR2X42513301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a0c8678ef6ea643e5132f7a4d93ec119758830cb94b07f999bc5bced79bcbd. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/FR96X2586875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a46f4ebec2db2ba5fd190cb9211423fc85fd1d3a00f07f0d77690aac0b524. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/FRX202559967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692f29316e066ee508ef27b220549fb6ee4b743a3249bc2db6cd5d501843f09d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762544119.