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 0x935115228e219ef0d6c0d6d8ba18ae78e46cbd3af0d517d7d4bac70161b83ce3. 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/882f940f-b353-4a33-9d55-ed09f59fedd2.json and https://artists.proofprofile.net/proofs/artist/882f940f-b353-4a33-9d55-ed09f59fedd2.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 0x3cda1ee656af528aa1ea05f8305e315e2a7eefe3fc9e0a5e7e86a3113995e06b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:24Z), 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/FRX282271659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e257a52cdfc48678fc124624f8c6a4b4ad4cfae15f1c8e12378bbe529a27b. 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/FRX282271661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b11608971164e74f3b8f92c782ad006851eefc3a820966e189b2a6053285e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42516513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558f3b06bf670f813a254b2e4971245858c8ccd9a99e2231c91aca797c66b67c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42516514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6774990426c51d6851d367ce32f7d763a152f61abd39e9fd02e00dd62e3e6b88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42516515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69470ff88fddc241674bcdf53ace3f92bcf2abb22e130ba55d2aa9e051ff804f. 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/FR2X42516516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244204f9206c63085660dae8a35acb93a605a95ebf54861b21d4a4026a350a4d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42516517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1159879fd05565f7079c973109b130b608ecc6a59349715400c777b5ef73af62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42516518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4beb5cfd301c341fb2179c9d6eb5dbf305bc64362eaf9db2f2a384aaa091009. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX282428412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c0720152566aa4de3a5c51329a24129a48689543241df1146167dd207bbcd2. 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/DGA052488560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9db34f4779390437ffe460bf77cfbbbc289382a9c6a8310cb666a44d84afa. 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/DGA0R2422393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006fde7112f90f2f049a12c3990012865ef6be3f4aabea714739b34c80424f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762302971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd753f1635ddbc806413c2ba5585aec8213b42d7c34f9f95a473732f656c8e3. 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/DGA052488561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00d9dc2796ced9638aa925b254f9a2d528627c56387608a28e2b6396bd886e0. 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/FR2X42516519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e26c7321b3a355b618720925df3d3b62cf18baf082549274eada170cab32429. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42516520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4974a26ed9cd0336fcd0a72a0f0345ad279c1b7f28fd4a29e2e92c7aa3014bb. 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/FR10S2565967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a6b6bda130221a26afeb9120ecc25f81fca20157575b93b6db3eb6e91a96d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42511018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c7a7db602b224b9e2a5ca3e2dba9172ee57ff66a8e0300fbe5bb3299f43c79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42516521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3a52662652f8f59b4c8f11b6b6623f812e736332e7dc1c7f262c0d8717f4dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2421129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27ac05bbb680f6b8c692366bf68ef30b774108bea47e457bdd24bdbfb5d1f2. 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/FR2X42516522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe307ff2bce0f4852c3ac348adb4292db425e8a0a7ad0a5e237ed06891b5f019d. 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/FR10S2537748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925ede1a64895ce6875e9f35888f3bddfb6b3f6633c629a4b4d48a8c04aea392. 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/PL90S2500028.