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 0xf6c72ca1f28be5d4988686dee63836ae405c54642b547ba06f0d3ccb6b49dc00. 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/df2e031a-6747-4bdf-beee-4c3d123f139e.json and https://artists.proofprofile.net/proofs/artist/df2e031a-6747-4bdf-beee-4c3d123f139e.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 0xcfbc89264062d1a6f20a58f604ce3b22a2e61f0f9ae87a02202eeff4e3301a6b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU7594275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d80ce1d77894b1c140679445280b6502f3582014c8f8b2b5a9da361a0cb2af. 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/GBSMU7594276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4156d278b15b1080fd656dc7822ba6da788cf0e9fd8de376cdc22d0f8a1a661b. 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/GBSMU7594277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ec4ca90c9cc3f59875e3d39163b862386faaeb9cacfdcdb810a74aba6cfc19. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBSMU7594278.
#01 Entspannende Musik zum Schlafen, Relaxen und zur Massage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6278f7033b1137762f9e9d8cc0c4656827e4fb304521c75bf1b53ff0771d98. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEZR12230712.
#001 Entspannungsmusik zum Schlafen und Relaxen auch für Babys
#001 Entspannende Musik zum Schlafen, Relaxen und für Reiki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb0ca8d0bc0ba03a854f64dfa3642fbf7588bf838af3164f859ceae2f76cc27. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBPS86016387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc223599d4e72bf1ccae30c75c6c0d7507c6e271a1a7e84bc12b9d05a84fb6bd. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GBPS86016381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a90f8be78c9d297e6399f69da967f7a960a714d52e65d128b8c0b1596f03bcc. 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/GBPS86016354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2215d96f600831f006e3c2a8146c89270e492ddff2de5f50dce06a9fca82c8dd. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBPS86016357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac60bc7bee230f9186dc52b7a0ac61711e67cb178e8933d86c88d246b5c044a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBPS86016412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25975ad1087d0b52bac6c77d82c4fa9755c973c74b27df84398c139a82021d73. 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/GBPS86016363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fde02f8c7fef06d3f968e724481bde79874995b03214642f5694b5d5aba7d7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GBPS86016423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69f9e26615602306467c1c9df1bb0c81b5c149f306dd34d7ba45190b8ee8136. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBPS86016406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c5d3ee3eda41d05bdda9bde1710ab1abcea6b5bd4fad7940e6dbdbbda5d3f3. 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/GBPS86016420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4080310a9e9f5f20607d7298e7c7e1b8044f0770d53e3152c526bf3fd45b9b. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/GBPS86016378.