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 0xc4009cf18a78f231e02bd22e0164d4941050bdff11ef0f7229fdbde1b4f35d29. 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/18df78b4-9eb3-4336-ae3f-94630c987ed0.json and https://artists.proofprofile.net/proofs/artist/18df78b4-9eb3-4336-ae3f-94630c987ed0.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 0x48786ae1d48ea417d3e7b7f31e1898e545cba4051880bf60ea0d1e6b5e4d8dca. 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/QZNWW2265238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4527759553e598174c94498086f5948471f3eaf5da9f1bb9f8ef0a7c63b4378. 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/QZFZ42356147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf241f0b26cd96934100aa40f202032c5ea33d49defdfd3cbfe3361e82603c94c. 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/USUG12303563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd459cc724741c07a8fd434fabb7f341ecc182ea1cdd88ae5957824198a6d0317. 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/QZHNC2445864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab25c6569dd1f7c6ab9e9a01991ea255bb30390b3588f7fe9d1124a9b669e79. 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/QZDA42432990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1218394bed68cc2be3c349009612ca1df8ee73530e125665ecb270bd884e10. 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/QZTB62320785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5859532764c36776dd36eb93cb890fc3e3e6d3e965be29bc5f81040fa1513. 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/QZTAS2371435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ccabfa79fd663f06ee5986f61ae5a84ce268c0a377592dc885e4b01dadbd97. 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/QZTB62320786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d58efd010321cdeb634ced37b5d6c70a57259a782a5ad82b01de7a31da92c. 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/QZMEN2385984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6e890c2782aa179a5619b65657ad194e1275c8ad3f37cc957040438c63382c. 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/QZTB62320787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5859532764c36776dd36eb93cb890fc3e3e6d3e965be29bc5f81040fa1513. 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/QZTAS2371435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d58efd010321cdeb634ced37b5d6c70a57259a782a5ad82b01de7a31da92c. 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/QZMEN2385984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c8d12f563d64e8a78805228730cc2fa2989d75598cb72ee7bc64d6e5a4a91. 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/QZK6N2390308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910217749748ecc59db2db6a0d7d2156b5f86f36e17f7e7db32fb59ce2b66d27. 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/QZHN72386569.
if i would have known - acoustic version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200bd68aed9533ae90ee7049e3d681d34bd030227d1dc358b64d68f4e60eeca8. 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/QZHN72386570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b54f4a686fc2df6666ba144e8b509bb18194739c5ef62cd07664a54a8f546f. 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/QZES52301291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87341cba3890b27a252e2577f907ce4a68a58525462b3c77d37dc6cf841a32f. 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/QZES72398625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87341cba3890b27a252e2577f907ce4a68a58525462b3c77d37dc6cf841a32f. 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/QZES72398625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b54f4a686fc2df6666ba144e8b509bb18194739c5ef62cd07664a54a8f546f. 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/QZES52301291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdca0fa30ad65e89cd44075ea4feb7ba206fba9773d19cfc3083f849d5e66fd. 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/QZTAT2285842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6dbfa7330daf2c167dcc50f8f2626b03b645c7c24e77fb65deaf0743e40495. 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/QZES92263214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb254b34c111644b2c4bb8b9bbc44bb65a594be5d85156ce66899aa1dedc78a. 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/QZFZ42253758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c9984e86b91f14b7d5fe216d389a4323f9b65b1ff3a805d78b146bc095da4c. 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/QZPLR2187557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d8d7750ea4949e952a992e64593a16617d73b38d65e57bcd0fecf41ac91a9. 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/QZNWQ2102449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd681873c2440813aaca9e0094c4c1604d7fc702bc983eabf544ae136e8559f7c. 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/QZK6Q2167180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee244ee78efe6a6393b2df6441c1117f5290e70efc31695452f739a8473ed324. 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/QZNWZ2062504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb32c331f915a2639b14413a14a4d3f1b241337436ad4be6465fd9187ef4a6c7. 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/QZNWS2039750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156d33780cbc0b87b088675ce06b10337e2a8df3cea7de371683f78b0973becd. 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/QZHN82086693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e48be00397df2a1dccee2f061839e9b0059978fb3fe5187cfb060bdf61a1bc9. 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/QZES92064103.