1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x08fa1395ccc8d9d3f9d7eb5edaf7e72a7c071451e797a7d17a53fae0bd6045b9. 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/a0156d83-10e2-4d3e-8715-accd3e31465d.json and https://artists.proofprofile.net/proofs/artist/a0156d83-10e2-4d3e-8715-accd3e31465d.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 → block OTSBitcoinBlock must exist at that height 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 0x3b8c772310981b696b7d81dc2ea882bd6647ff2011097dd48e9702f2bf5fae91. 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/PLI363021600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a4ae8429ebfdeaaf69c896fd8152a45085a0862d4f5f8743f3142d96f44ec2. 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/PLI366055170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9625af3cc624f2d0b5926a0de5180147ec66bdd73bb06bc3544d404d0e06bb. 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/PLC062428680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb89dc4c92516179bc384bf58245c088d30d8f5c22517bdf5203bafa3588f83. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PL59G2100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ccdb576ef372f2cedbf1df53c25b06104a7b1e8b86b18a974e9d55422dc93f. 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/PL59G2100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca9a8daa24c380705abdc4e74e15ae7bfde86330ac04e65cbc80a7543a26f2. 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/PL59G2100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6d6c65b67c91d12e142cc09f317b04444d985e9c4d309a9ebfa83d225c7276. 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/PL59G2100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14d20516c669133b599ec123b64ad8cbc318b30365c0998093e59816947f312. 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/PL59G2100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231b184213c9d42d90422de8a6925f1c73c1b28e6f742231b3de2355b37564f. 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/PL59G2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4417164d55a8293b7f2478f924b066edf78b491378a935fb51feec68e8dacd04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PL59G2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976dea7cfefb9ab1b4f1f8361cfca01a38767854b3cd6ca32eaab60ddecd3d3c. 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/PL59G2100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dba7578261c898f4f625cdca3b0428279133a6c4a939bbd7f1c5ef6fb971fc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PL59G2100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8b39b82e98a2471a69b1ef4c6301095b5c16ac485eedae8d0ea399e75353a. 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/PLV402401931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8b39b82e98a2471a69b1ef4c6301095b5c16ac485eedae8d0ea399e75353a. 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/PLV402401931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9625af3cc624f2d0b5926a0de5180147ec66bdd73bb06bc3544d404d0e06bb. 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/PLC062428680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3ea078d84e4496dba90d09649b21c4e49802e202650cc45e61e8f628a4c12c. 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/PLF242514344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c2994ee35ab129ea34bb09e7816d94826caf268474316d5f3ab866ba1867f. 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/PLF242514338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf03d00d9eb54e16e83d9e83d75bcabb41d142be54bbedbfe4ebd72d0ad8857. 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/PLF242514363.