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 0x7bd4a6975fcc1bcec6dfb87b511b7a50a149e056e4934540da61a545c3d3ba7d. 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/98b35d41-0981-4c9f-8e1a-de6d49becb49.json and https://artists.proofprofile.net/proofs/artist/98b35d41-0981-4c9f-8e1a-de6d49becb49.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 0x901eeccd791990ece13fb68440558cfcd6236c6e26752494484e5c27148a1beb. 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/QM4TX2307036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef6ed1ab5f25dec200a94bf2242334e50261d13328cfcfe5db627735e8422a. 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/QMBZ92362331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c919e88d633107081b1b8b34f422c14341e2b0a749c117c6b768f5e25e0eac7. 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/QZES82294531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7120ed61e70436b1e8f435a1acddcd20e1d9e1029b8c6bfc36804858309144. 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/QMBZ92362334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fab3501b5ff7d27cbd7dcc0c4dcc3e1711a149f581200c4173657797e06b1. 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/QMBZ92362336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8179bbdb4440a5b7bf324fea04d251b6646e8dcba65712b734ad76e714b1c3. 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/QMBZ92310703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78f1b59f809af0b33a64fd67865ce29356267554d6d27f361463c2f5c3ee27. 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/QMBZ92362337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10aa5bbf68f770d83b931e43cfedb880a889bb25e139990b26df9430c5999a. 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/QM6N22327420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b40527f3e416a4348622e89256b3fc833006b122ffcbb021238f15a5de05d. 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/QMBZ92362341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5691ddbcd83d39cb438d5bb64bc2a10c97faee3397919b2ac5ce6bc09ac2ae. 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/QMBZ92362342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865f150cf5c6c2463da33fef7818d80336cca2b58145fd1ad6a647a4333ee4ad. 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/QMBZ92362344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e9d923bfc3c2e76c4f4a9710c123398175c1d39522d579d86c74ecfae77bb. 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/QM7282339586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805719e1ea0d4f2cba593402ef7bd29beec3df1a8e633bde3f0fc00732c80c8. 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/QZRP42137036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be99ca726d7e037b4cc692dcc68ea6945bb01f4277d06e87f81c4221e0b5b. 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/QM24S2401805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa828e7e670f13e74cef47858c9ffebf63cc8bbb12e6418056dc309fecad7d53b. 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/QM24S2404168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93336625d1574d0980b338a00f5497864c3b3967531135de321346ab1ba09f1d. 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/QM24S2404750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55c56229c4a9bb9cfd418e9498e09ac2e8ec89147cc260aedc4f5099ea49a37. 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/QM24S2404749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c919e88d633107081b1b8b34f422c14341e2b0a749c117c6b768f5e25e0eac7. 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/QZES82294531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7120ed61e70436b1e8f435a1acddcd20e1d9e1029b8c6bfc36804858309144. 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/QMBZ92362334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fab3501b5ff7d27cbd7dcc0c4dcc3e1711a149f581200c4173657797e06b1. 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/QMBZ92362336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8179bbdb4440a5b7bf324fea04d251b6646e8dcba65712b734ad76e714b1c3. 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/QMBZ92310703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78f1b59f809af0b33a64fd67865ce29356267554d6d27f361463c2f5c3ee27. 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/QMBZ92362337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10aa5bbf68f770d83b931e43cfedb880a889bb25e139990b26df9430c5999a. 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/QM6N22327420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b40527f3e416a4348622e89256b3fc833006b122ffcbb021238f15a5de05d. 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/QMBZ92362341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e9d923bfc3c2e76c4f4a9710c123398175c1d39522d579d86c74ecfae77bb. 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/QM7282339586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805719e1ea0d4f2cba593402ef7bd29beec3df1a8e633bde3f0fc00732c80c8. 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/QZRP42137036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93336625d1574d0980b338a00f5497864c3b3967531135de321346ab1ba09f1d. 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/QM24S2404750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa828e7e670f13e74cef47858c9ffebf63cc8bbb12e6418056dc309fecad7d53b. 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/QM24S2404168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b18b171d31d67dfd2f3816255211285bb98a66db18a8f29215d114c49a46710. 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/QZHN92111143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ab06fb93450f60b15b85c07170d96ee3a92ca67f5ac48a513b0c66982c3064. 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/QZK6Q2073620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f19dc7f4355783e69d94eb2d46a544735af81281289ff8cea6d62c6384236. 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/QZDA52051989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04055579449ac94c708069d5f314be8536e93be5df8eb8df9461c230dce349b9. 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/QZES71952310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7d1b079dfe18ec8b20ee2d9367b5bada8c3cf80fb2ebfb939c40fe660b04e7. 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/QZES71952311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2c0a5c3a493fed50efd40603341d5fd450605fb4879385b4b8d5a93146eeaa. 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/QM2PV1822993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7125cb6965defbdbe687ab7d6e5087737f0307fb8ab025ec0a4313c97e4682e6. 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/UST8K1794222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175c9cf70997152f59086bedb435d5e701b91ba0c8ad6f6cd38d19a51d6c0e4c. 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/QZARB1800730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93571d9bd8f9c118ea4ccea3b91cd2f233a01aa2b776d3f0ab0cacec86d50bde. 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/QZ9Y21740537.