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 0xf7b8ede968a5fc08d4253d2ac21b1a41990ed401f6b4d591367b10294ae41445. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b67197c1-c441-4ba2-a886-0b84ab906b25.json and https://artists.proofprofile.net/proofs/artist/b67197c1-c441-4ba2-a886-0b84ab906b25.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 0xe27a544e3c2409871ea4dad1df72fec9fad330121753365aa7ad6284e0ca68d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVR10500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44be218190fc9a3dea04ea099ebece5f110ed774374cb6f4458ec123de1dd1bc. 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/BRSO10402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029070d3991ffb087a53ac3112b674e50b646eb71ad502f4e3ced861878cb260. 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/BRVR10500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9d19938a6073ff316fb2b76c7ad236c8a13dc7b774739797b96acf5fc37b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRVR10500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1853d965f48d0604d93857a4516e25bf7b60e3d6af6ada4d21eb7e0fb425ab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRVR10500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578669e334a0e5beb0d9f0e515b84f57b9cc9bc7d2f77f0bff393479ea67b354. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRA220504852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f108491e11c56e163752880c2e15eb94650ab33d65ab42999fa7236fce54cb. 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/QM6MZ1595362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef5d0905561148a0c6c3d945c4c4d8bd9fff541bf41fb2fe4bf17168b12d6d0. 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/BRACT0400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40db01828217c7eedc7ed1980e6e0dc1f764d3258f3008bedfbcffa46f636a7d. 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/BRACT0301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38aaaaa671d050e197a341959f0b9748a6570f99fcebf99259d417195c51eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7720d0ea2e55e720008a4fac05e2e2ef2c396a92cd48369054ba682b4957ad. 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/BRACT0300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf4d2ba94e68605555ac2c61297c9c0f13f63cf728fca529c1e50a6294be420. 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/BRACT0300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945110cda0f3fc617a3b475457d42b99889b1f8c4c317bf3e5a4e70484e73b8d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT0300682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ace085e688d165f54671ae4f9b017c8b3fdcf9cf279742888b5c4f2143f9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRACT0300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf4d2ba94e68605555ac2c61297c9c0f13f63cf728fca529c1e50a6294be420. 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/BRACT0300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d7fafed3322b5ab4d41085b0f6a6c09b8d94249934157fd2255898dc417f1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRACT0300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99413f7d42bfa4e6d84c0c8e2d4ad133073f79b2ec3a34063e02ff216cecb799. 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/BRACT0300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b443260d540f55334dd0068fe7aa4e86f0f8ca8f6a867f4e9e55f0aefef12ee. 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/BRACT0300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6328e6b59cef7db6315d39a2e3bd61265c5eb9fedf120dd8451879b74b706cf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT0300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d8c08e33481e2900ba29e9d856135a2b7b775eb9171dbeb74e582bb84e20c4. 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/BRACT0300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82293fd23226ba3c7612c86311f4e8e6c1506d672628e6f0fcbce9bfcd3025e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRACT0400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec3151c817a29e4004ec96080a159ff017f20717b46bb25018d07faf1fbe12. 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/BRACT0400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8b19d6ca18cbda1c359a7521d57a26d80dc4faad8093260acd22a8b3fc6735. 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/BRACT0400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1a9483c44c52a73323b095641758b0e9507c29518f848b13afc04a5851daef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRACT0400447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10663cc3e855330c9b89b2f49a06f002e339b120097df4fde692682b6828f4. 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/BRACT0400448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc975d3d61e0f948438954df8c1f3326a52ef2c6018fb654e93b9db65db584831. 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/BRACT0400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1de9a566d392adddd550faf2da8f7ef1371dc785db1ef30b5f3f84c25e409c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRACT0400451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca45a5d56a61fbd870dc7c8906c26e3bc5ab563acddb57b439a34c4d358ca80. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRACT0400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2273513a2aca15fdc567d8e0f941ace309e28ccab51c0aaeccfdb068a9ec600f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRACT0400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2755853fd3b1c56c1afb8eb11a14f129f12ce895f4c170d3b24df1421a2bd9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT0400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eb35b654c4951a7690dba22ed1afbc55fc3fb31f331fd5c64e9cee4f390152. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT0400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2273513a2aca15fdc567d8e0f941ace309e28ccab51c0aaeccfdb068a9ec600f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:38:52Z), 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/BRACT0400454.