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 0x00fc54af8bf6328366e4679e3768d2826eb24014bcfbed71e54ee975a3a0b9a2. 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/f84ff1d0-76cc-4115-8939-18e158f80926.json and https://artists.proofprofile.net/proofs/artist/f84ff1d0-76cc-4115-8939-18e158f80926.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 0xd5647ca58bf0104808608d0945a85f003f429f5dd36c6579a312456b25c27fea. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FR9W11903585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d52f9fd042aae84dee6358e80778fa6b248f5fb3b89d0efc76d8f45088f7c45. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11923354.
Le pire c'est que je comprends (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b02995a9dd41ec46613b496647ff0b3c038f7b91cedffdd52379ccf9798b18. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR9W12041076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb40bcbafaf2a7b3c36a14b8b91dd4a19f70601a9275b665c12254fdd5e9d77. 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/FR9W12041074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe541318b9cd4aa64a9d4f270094a5ecc45a3580579998992d7149a9defacd4da. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR9W12041072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267a9b6aa58f1b329880739f4f485bfa9a26837c791b02692e5c3aadc6c9b290. 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/FR9W12041075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cfc8f632a23e34dc2b766dc6534afe7fd5e3608ea9b68a300e43b42d34ec99. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FXQ932200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb10948171c7c204f0baa54729214036cb9073963835f50a7993a9488383aae5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FXQ932200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f854995fdd8e3ff2148026d89defe7132f530424eab87d0f164d0f854d7f2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12406984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d7d1096e84eb522160a00ef6731d2fcc600e5d8b52f2a533b6c0989cc5189. 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/FR9W12424400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65a71d6417b4477c8dd526369dea04623b1608c28b01f9641883a43193f137. 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/FR9W12424398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e46c0fea5b414e00a32ddd842a19f0c1225e865a930082de12980532dc367cc. 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/FR9W12424399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f1e8055a428f1c6f7565fe3e027b6dd889d056f722ce4c51378bfeb56e9a8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR9W12424401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076a4a0649c623f449a6e95ea5979251d88f54b6139eb955a2265a73a2567b9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/FR9W12424402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c862f3adbcf09d5e4914f45a4c63527d2d888f866863f56da0c3aded93be70. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12254470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c696efcc5fb958a21b2b29ea206342b6456dd9b40b009aadbe1fa1b0dda468. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRR642100936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9a68936ad61e3af8c3a1fd6026f5cefca918c044578b049f49a86dae3d512. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12332562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b102af54e096221e832dc919d14b8f99ff73464aabbc8db1185a952283b61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2LY2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b102af54e096221e832dc919d14b8f99ff73464aabbc8db1185a952283b61. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2LY2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b102af54e096221e832dc919d14b8f99ff73464aabbc8db1185a952283b61. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2LY2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4ac31a87afc5c820f498723ca9b758de188e806adfd5ba7d90bfea61f84163. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12352258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a518df8ef69f4722275efc52339c1f6b1a985beccb811595c509e3d75c2f15. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W12239803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a518df8ef69f4722275efc52339c1f6b1a985beccb811595c509e3d75c2f15. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12239803.