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 0xdfd76ebf8489c2fa03d67fcfd5dd9080a9a50356fbd17c08947f456d522f8bae. 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/c19c5db9-20e4-4e0e-8dc0-46c905d4bd8e.json and https://artists.proofprofile.net/proofs/artist/c19c5db9-20e4-4e0e-8dc0-46c905d4bd8e.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 0x64674241efd19894fcb2a70fc0b8a48b86d5bad14722d70d38e741cefd75c2b6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SE4RG1817403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023fc9584b26a0c8a8b045e8c5af8cb9837a83e9f59c98113576edf918a34ff5. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/SE4RG1817404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76e3ffcf240796da0e0d6c262f19a2326eba5ead7b9d15138c6ffc8fa8ab96. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:43:17Z), 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/SE4RG1917004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e17726b10da5ce6e25f16eca21be2c0fa4a89bd88eab60d861c0e7bf60139d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE4RG1936003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3b0368b79c36303a0d3a3de7e1fce5a2200499b654e22d836793623e18c51c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE4RG1936006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d1771153d1bb3cc1cce874c9d8080afd88599e6733fc94b59b285a413fed6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM24S2010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12612676ee62e3a42771ccd83c4e57d2826e406d98f66ebf582085b16016dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM24S2010163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f807305889eed894e43084cf35e65372ac08194d13d1c6b412598436283de. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM24S2010164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f757e1c9345078c9a3dbe6e8ac301cafbeaf88ba5f48e102edbadbff3e98fb. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/QM24S2103308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee138f6161962f48a6d49127a5a5d723f12648c02f5ea0b93814d103a77db01. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM24S2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90efb9b2daf2eed5ea1410f0449bb813447f2c16568194796d07ed2029ed3fa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM24S2106284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4391aac8ca3abb7620e68151c7fe2f458ad028a312ca1988740b285c38e83cc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM24S2202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe65d5677f982251113a6802420f653d5662602a03d008c16966e0e413b22c0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM24S2204075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bec6d30f8c31b2c8bbdbe8899171f6ddccd9d44298cf81715d6cd4a35bafd09. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM24S2204888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7051ac3d3e8d84a335c64f8f62335f24f1530dc54bb3a77338b4c73fd3a6421e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:51:18Z), 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/QM24S2205823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71da004529a569f4206160951a2b40aa25446834bac8840d033c8dd6206d680. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:23Z), 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/QM24S2300806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caedc0d575f212d2e3c939681336e643b98c9d7ce25356b8a06d9e6dce9c290. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM24S2300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47917a4f34364cf58ba3ebbf7c308fda4f9b4d19612a8aa7ee71bee97e1b7c3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM24S2300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486609bc058f692a3e9c709d1b30c7d26252a59a89d9c342b44130986074bc7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:54Z), 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/QM24S2302850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddcdc03d37a5a8755dd88387b8d147471bd3e718c5888a028aa1068289a9707. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QM24S2302849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf696cf2adcf7c6c353158bb1a2c16e6fe0335c6c1a0f4ce411326472b11274. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:55:34Z), 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/QM24S2302848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19902d8ecbbf58fc21a07858d22a31016fce645bd8624f39ed8fafc181c957a8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:52:52Z), 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/QM24S2305054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e4328c509782e774a9906c2b9660006c71e8a5cf1901925660e4c50c0cea5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB52393062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa106feeaafe4e105aa14f38b075847567849d59742f13475a693e47acf3d26. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QZWFL2300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e248c172ad9bafa467131d8b12179ec1664c1883c17f14d01eb63a9eda11a. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZWFK2395749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65e1b86a29c36ec44573cf626409a2c1f23ce68b1474f1ff254ec8bcc4f2f21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES72467274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc320f40c751f016b9d8b366079ee7f553ae1fa99112bf490d707a02006af2832. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM24S2404127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1906d17b519c22ddeeed3c055c4733a1d070746c091b841cee778753ecb878a5. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QM24S2501443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a27bc246d8b577a0917151effad1c32696ae4b8ee66402819bb4325f5e4bf. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QM24S2502220.