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 0xf45902ed0ff8e1cf191d55212a14fbcf5cdf01dec4ebd10ff2a01538ccd5888a. 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/a98de8b9-da02-49d6-8c51-001356bd870d.json and https://artists.proofprofile.net/proofs/artist/a98de8b9-da02-49d6-8c51-001356bd870d.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 0x56613a5a3b8cb3cb5b22f72ae0c0d303ed5d7f6cc15c97dab397497579b4fb08. 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/CLA252300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee19d45ce15edeba76d3157e6ead10c5c188990737c84bd71194a0647e25f513. 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/CLAA22300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08cb50aefdb7fd02ebba88bb952a13cf83668e74e0538ec8309b5e5e97f8598. 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/QZTVM2365157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382ed9eb935948ef92fe6b056054efaa31e0119d6e163b0e37497ea9f0de6cf. 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/QZNJY2379576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4427ba7a440f068aab892dd53713cba9916d49084e979776b888dd0849e69c34. 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/CLA1D2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab215223992a6319027c8e9a6c0a2e2a49260dc82620dd7de235a5242fbd9e9. 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/MXF152200956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9d378d34705a0cf3e32c2ab8808e0d03dc0b4d6580f7e758740e9082aa0302. 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/ZZOPM2238473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15290affa3b0f0e2732c335008b33fdffb2561bf70f0a79fe9dc618edabbe745. 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/ZZOPM2231370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1aec760157b38f2b4853fbe6efba987728d2fc223da93b3e676f7ce733a06. 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/USCGJ2205630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84ffdda343385fc7a467476a1f86bf3ba106bff97c7b197d8be9f7e4e43de6. 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/QM4TW2264015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50b282cd5ac031d575123d9141bad7900763f51c51da6d2f46b2a19b761fd8d. 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/CLKT22104111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577cd209432df59e4c90d10d22f9057b5a81bf93af53fc8ac27fdfa8065e7c3e. 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/QMDA62185749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce427b85c7242b5ac0dfbe046becd9173c6ee1054c3f1ebbb64edf5a08d4ea. 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/QZHZ52164092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5022f3e3d527fbcb40db0be0c2069eda595d90727ba86fedfc0c2ebe980a7ae. 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/CLKT22103711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5ed494d65f759af9b313d172042c63ae331e8cd2091f5fcc432620357aa9fa. 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/CLKT22103710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ffd9bf0ac729c05ee0db13c25b732789c9d2a892490ca7f23b4ac7a5e8c5dc. 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/CLKT22103709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e7aa63471a66ccf40233ee63043d72baafc0a9883b8ea33d434e73664d2ec. 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/CLKT22103708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de71637167d9b6cdd7f50e1225d2d0b031aa4e3d1a7534ef0b377f47dae9b3d. 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/CLKT22103707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2a521bd611090f4c6d8e96145dad0a8b8b7a1704afa38afa7e871799c9e576. 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/CLKT22103706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1344f13debcd5b5c3d2000da2f5eb9a95ccb73dcd2866f7e1158143ced687c. 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/CLKT22103705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240db04c40431621a905ce660168af5c15182c67753c67a317c35da7dbdc3aef. 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/CLKT22103704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449848994f4b59ffa70cf92763785fc940481331ed7c00607ccf2138b9e7ea97. 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/SE6SA2093502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5350687328bce4728a54efc262d3cd510ea317de934675b0141d481194f7e90. 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/QZGLS2030546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a32c880d6ce7f3053e192f75de25abf7bf42ecacb0b92678f5e64b7178d0d28. 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/QZK6P2051214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab9ac059b340db3c1afbc8d162d092587dcc0e1a3a8ef2b681368043cd4419f. 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/QZHN62093852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f5ad87473233b4a6821bf416db077a2c1ebb18aeb9f4838e50e13dab776aef. 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/QZHNC1903822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9bd94e97da072d6c63f40fa721e9f61f6761967504eebeab18cd36a7ffb1f. 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/BK4DA2402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71007a69a94ecaf0c21dddf2c6d81a399c1187e6dd0eca1345fd8ce2f423572. 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/QZW9K2469066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf3093f2830bacdaa33fc20115c8d01a61e0d3422f0467c3b6aeb7506e4cbf7. 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/CLAA22400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedfdd2c880ebed688ed75d3790cc714d4091cdefda2b5b20803e94e89c4feec. 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/QZW9L2487001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690fc9dca7c11b587da80ef105e3006818a9bf60a3317ff6af64949c9d6a909b. 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/BK4DA2455666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c99f2e1774c031363fd5ddca82ff71b8309817ee62e0992c49ef260404f9dd. 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/QM7282004738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55225c256c0f8e7061429f2e39b8ad333866460ff4b85b40cbc2253d9608e285. 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/QZL382272233.