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 0xb521c2d5adb075caf09f25588b84b76a99c997f073b749f57860aeeb2b9e7744. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41c84bee-ad4e-4a56-b6e5-a38ec23f8a75.json and https://artists.proofprofile.net/proofs/artist/41c84bee-ad4e-4a56-b6e5-a38ec23f8a75.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 0x56a2afc5c01c9c00ec6ebe64f542d89e62f2f724db83d872e2394f0f0f710956. 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/PL2DY2301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a19c1256ea980cb2bfdd80d9aa7352a3f038f9deb7ffeec213191c677e041d. 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/PL2DY2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b82b9d0a9d106e978a60b24de21237d0a585ea1bb7242d0424499d77ccbee. 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/PL2DY2301386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fb229655b340702de102c3ce1c292ef193fb0d5fbda8e0c5ba6c4bc885c6ab. 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/PL2DY2301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20499df750dfec14c7cf4068a58bed0e18a3e0fafdcbb5bcd9fa71a54819b63. 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/PL2DY2301302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68318f4f63eac62e2863011017292ab0033a239ee8f4ea79639af4bb4edea912. 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/PL2DY2301388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750377b5ff0245bb06dd65783433eddd87a2fdc772d2d7a0a256d92149a7684b. 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/PL2DY2301111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12cdc3c4c6f9fa89964c0a7c22a2a08ae35c9316e30f3fa52b79ad33362fdcc. 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/PL2DY2301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27ea37df7c006cbe03276ee096fa809bb999537473e36f1881b625d3e04759f. 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/PL2DY2301390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4662be4a79f062a6af59402564ad8a64b46412cc2ad8ab1c8676c55b9e44cefb. 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/PL2DY2301189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2632f70a288b6a013d21c6ebd57c1ef7fc45698d102278ad3dd089f624fb57. 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/PL2DY2301391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea94f0f3256ff91b48b06da7e9abf89539cc7f02906fc55d3fdd74aaa4837c7. 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/PL2DY2300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff638097976c938f7aa13dcde78cb68f4f0cd3915abb798003f75888f36105d. 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/PL2DY2400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b742b46261f53d733242c737f30e134e1b7eb8478290f1b87b5b1bdd2d76d2e. 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/PL2DY2400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba570b670b6ebb32d8e14aea1849bbaaa02d922a69134842d679aec74bfd1aab. 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/PL2DY2400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad94818081d3a2ec7e763768b7ad6f45a8dedc4e8fd79a9157f927157386527. 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/PL2DY2400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4411049c983d34fdca591cec86dfd0394fd4527d8c97203849e01362e462d207. 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/PL2DY2400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479c86da61b99b46faf06c3fe5d33c2f4334d392ffdf58396a2b1a3c83969fba. 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/PL2DY2400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1363e90a53ab218cbd36d427fbe36613d99c3bc73c2acbcf571e067d21db00f3. 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/PL2DY2302517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d9a26f8f31480b377839d2e971240b86ef8b1c3d7f9b453bcf00f60b47a46b. 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/PL2DY2400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff638097976c938f7aa13dcde78cb68f4f0cd3915abb798003f75888f36105d. 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/PL2DY2400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829330d94a77da70ebc181552cbe781e6d0a2734988c7e93482323e7cbf45aa6. 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/PL2DY2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5076d76012645c378f0e18ff61fbeb15077f0359f37b4566ac9c39126c77b7e5. 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/PL2DY2400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb64b165c173c8e47380419346b4546ba1a99ea181720a10ccbe88191b670f5a. 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/PL2DY2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc95b9faad48b3f46106be3629b7778549f740d82854098acaea8b5d4e51b216. 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/PL2DY2400481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd927df6096cdf4b1413f8480fd22230b8524288b6565fa5341d0a9cda1bca7fe. 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/PL2DY2400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ad93464a939b340fb157cde643e614d373a93ba79a67e57b8dfd2a6a713ba. 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/PL2DY2400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d8cdd35f197e947de430461f920738b556036db58279d53ac386940ad55acd. 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/PL37A1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925819b1e18e822685ea0ba3855decdb3adebb67d4a90d1b3103b7a4c509960. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PL37A1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002827aaf13c3a7bdb2daa77029b1efe5f28d560f3c419ec09b2466ebc03cc59. 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/PLI360992650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd39975dd5e5177eb2f3d4d0936c27d9367b71abb4d27e2182a069f712c924b. 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/PLC062112115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb340e0b80be6806a37473fa238b56f4d3b2d82515768ced0dd8a03feb57aa. 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/PLC062009718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1ef142192193da565226c437ce1862eb6d7416605e62709e2bdbe5af45f08. 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/PLB381900155.