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 0xf4d10e8f83264d35d079fd31f7153899507c0ce720f56b0776a0c1e507a06c18. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b0c3d7-9c1f-41cf-9b45-612cc532a53c.json and https://artists.proofprofile.net/proofs/artist/e3b0c3d7-9c1f-41cf-9b45-612cc532a53c.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 0xd541682c6433d824d394d3789eb24fbf30223968e53a0ec87d975193e94e34a6. 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/GX38U2346780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492b410b8368a8d7055c144ee1b90ca7b95a61adf4eb0c7294818cf148116b0f. 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/GX8LD2423461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cb6b460aa8e97ac91dab831dbd7bc1bd629e745e46309d5018d2d84ef27d90. 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/RUA1D2481689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd51cf48d0bf46d17172a9f7b23bf70a853611e57948b6bc1465c9b24aa281d. 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/GX89G2416477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dc761cf856bef3ea34bf2edb2fd958898293fa371c7c95680ef3074eb37549. 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/GX89G2461946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1392133c4bfce3134ac741d131c9fbca0a1740cee99c2d46228b5769e82309. 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/RUA1D2465769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13659d6edd01f686572eec61fba2d12cb663fde6ba15e275e785b4847084ec7f. 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/GX5MY2352744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633c1402e6d32817e27e304fe7824f6b2965e9872df02d792395a36b35d742b7. 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/FRX282486906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6132079f4431cba308cb8dfda778c52a17a7d589ce47099df59276b373c712. 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/GX8LE2412557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2ecf5321b9a595d780f8d6db40d21470df7c1e12f78d5336b35b71736bad6e. 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/GX5MY2378849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2ce1da12221d4fe91ba4e2850c1f86b7dfd2397936aa9e4735bb688ba77e4a. 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/GXBDS2332163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffadd15afdce3cfa93c661e44406502a1e8637cd18c869e6978f752c5718b6f. 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/NLT2H2400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0454b69b1548e309107271111650d672d78f71cb2e09e1b5580d8e85bdad9e. 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/GXBDS2345523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38be52e6a9cd2dd0fef7c49a1a8cb8fb04944f62adffcac793e6a9c0527c0c0. 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/GXBDS2305617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabc22b81cd57e2aeb14f980c5fe79b6eb5660346c88a2a8c9464f7f642a9c9. 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/GX5MX2367305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210e36daab042b9854526f1b9f0726476469d8d3e5b36b3fb01425049587227. 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/NLT2H2400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae2d1d2ef409ef947a321c082f2b36921637f152cccc90ddf85aa2a758924c. 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/RUA1D2419539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1b57af19beccb958645cca342994c1e5802b9ae8128a7083b64030a931059d. 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/GXBDS2377570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee1b867c0eef9c7df7fa1b870abe39c5f711dc441b00f7d1805b5032dd8bf56. 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/GX5MX2381918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942d558e1a8fbfc533e243e3576a134ad5f93943470b5ac3cb438f426c602bda. 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/GBLV62310674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f665ecfb8fe3794b4392e532b9a8870661a4653fd3a1aeb71091578512d4881. 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/GX5MX2335140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea998885aae866acfc9b3c7bf1012a8ff01139aa51a33e90cd058a7f0d57b86e. 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/GX4R52346543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8274360dcd991d1e1dd8ef44fb3edd0057b8f7cb639a96dfe45d3d9100f21d72. 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/GX5MY2321801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ea7b2c14bd47ff71d7062674147b33671a72fbd7a58735037c1aeca8b5849e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DGA0L2365303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c2a2a4f8351192772791fe041041af989fe4c3c2147fc27d06f8247dc27aa1. 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/GX38U2329359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7814c6624ba2efc669b5b93c894f635d09f82361b50dd7085372553bd0ffe0. 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/RUAGT2331011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cce2981758df233eb053f53bac481eb23b3a9b931143670cc73baddf1098c7. 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/GX38U2368648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d1847890dd4092b2a813e6b885308ef5cf32c180f0ca1d60a1975ec1ee7fa0. 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/QZS642320222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5927d1293b6749ac0084053ad2a0aad9f72483123f5e9778b5f2981d10476d1. 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/GX38U2317915.