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 0x30d3cdb67c53a5b430eb6f71edd59d80acc414ac4b686c6944e1a65dbd8c94dc. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef01cd9b-b663-4497-9d0f-059309d9dad6.json and https://artists.proofprofile.net/proofs/artist/ef01cd9b-b663-4497-9d0f-059309d9dad6.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 0x1fc98ba2ce7ca42dda4184991e4e0ed0c17334c1ea23477e39a7511e544688e1. 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/GBZPZ0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064d07e9aef4cc98a4b30a72d900affdb424ff6f1c436237a623b5858c630b62. 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/GBZPZ0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e068ddb4be2583ae6220fbd03115a5c2a45ac64a359e039787e2f73799e654b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBZPZ0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8f0978bf62a14c24fa79cf2773209f17b13611dc9d314df6a91225d990c4fb. 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/GBZPZ0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa232adf28b1cac793fdf69f04c6cbe1586e040555dd3280f6748acd92405bf03. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBZPZ0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83c3215ecc514b8fd33ce5fbbc794123d5ef4b0c2fbc00ab67c47277b157374. 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/GBZPZ0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8f0978bf62a14c24fa79cf2773209f17b13611dc9d314df6a91225d990c4fb. 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/GBZPZ0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f3dead7cdae41d6a7efcbd926a926a068bff9c6fe8d68ed08f134c36653bfb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBZPZ0200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcdd0e010ae6c8d062ca158ad55902e85dbf1edea29061fa000b8117cffe248. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBEXH1900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2280a53487e57558e12fdd44c32f5148ce41f0f7726bb12473c09b010f9f3ac5. 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/GBEXH1900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2cad6a64c8de667e356c0cd4a283963a1762c08bdee127339352167f352535. 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/GBEXH1900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e826a744d3058037ab952914a293a5b83c3665e96cd64bdc98267550eeb203. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:39Z), 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/GBEXH1900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441103953c5afaae95e62e6549d761d5ef212daaea2580c9aa96a10788a09ece. 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/GBEXH1900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633b3c8554ac5af380e57ecf11ac5c8870044b53ce5aa805dd9e3cc325fa06a. 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/GBEXH1900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce057a3ded3a42facb8589dc5273ec1debde22d356276bca024daa6a207ff923. 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/GBEXH1900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde81f9fb90cf42a8e4a324a331644420b850e2aec39a815aec4ada8d3f1a8ee2. 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/GBEXH1900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c400a57501ec218ff6a42ed27773996a3f59840f372a161f1a64eb0b3593321. 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/GBEXH1900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e43ec426ff731c30f94ded3cacd9d4a3923eaf74726d60bb792f470b9a9ab. 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/GBZPZ0600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7913db3ff539e1d880af5dd9a86cf886fd4f5f51df0d7fd9b172447e1d1ddc4. 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/GBZPZ0600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0891ccc984ceb666e68f184a9b6d45aceb6875d6dbf8daa607a152053a0a5b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6V80211884.