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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732ac8248b48e3383b31947e8321a9cdcabcc8ff5d94ba3292e8699b8639ad31. 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/f7fb91e7-f4c9-4aad-9c80-6423b27d7464.json and https://artists.proofprofile.net/proofs/artist/f7fb91e7-f4c9-4aad-9c80-6423b27d7464.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13045a9452024a3d2481adbbb109a01046c7d17a1a354280ecde1d0b943f19. 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/USUM72308419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3182d945a59c082667a57135ca2628e3843c37c8864949e051b5881715dfd685. 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/USUM72308430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa1fc6d418846a4af0916df0a9e2276df8d5cc1a867b201bbc776028c1c80b. 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/USUM72308432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3610543303c06dbff6c535fa175c7cb5db3ba7bd3123dc987406cf15ba7a53. 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/USUM72308433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077c8178b4ea10032a6dbbfe597847e0a57093151f4bd3a91ba5c202803106f5. 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/USUM72301924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae11eda086a99a7274870272a76aadba9eab88f238399512ce5151568c24cd. 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/USUM72308435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09835a595d0213be449cce874a7140233354e2c9582bdba6f3158a047e91004. 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/USUM72308437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2cfb39db19d2664ebf57ca388ce94b141cc2c2facfc0fae32eab64fcce775. 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/USUM72308440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4436ed0f81d97888da748dfc1704b60a035596efb8116565fc9ecdcc5c09fcbf. 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/USUM72302894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ba913eb25559221d3aa1061e59d8b143f0cb55fe7a918af3597d55195a69b0. 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/USUM72311909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b2e8362f1980b896f57e5e20dbe74e27d25a1d6a7fea6437b4561b7ca87143. 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/USUM72311911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982af88ff5ac0cef2085afb81ae32e4fa4095c32ae099174801cd077f1de2c44. 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/USUM72311915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3182d945a59c082667a57135ca2628e3843c37c8864949e051b5881715dfd685. 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/USUM72308430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa1fc6d418846a4af0916df0a9e2276df8d5cc1a867b201bbc776028c1c80b. 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/USUM72308432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3610543303c06dbff6c535fa175c7cb5db3ba7bd3123dc987406cf15ba7a53. 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/USUM72308433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077c8178b4ea10032a6dbbfe597847e0a57093151f4bd3a91ba5c202803106f5. 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/USUM72301924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae11eda086a99a7274870272a76aadba9eab88f238399512ce5151568c24cd. 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/USUM72308435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09835a595d0213be449cce874a7140233354e2c9582bdba6f3158a047e91004. 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/USUM72308437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2cfb39db19d2664ebf57ca388ce94b141cc2c2facfc0fae32eab64fcce775. 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/USUM72308440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4436ed0f81d97888da748dfc1704b60a035596efb8116565fc9ecdcc5c09fcbf. 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/USUM72302894.
i don't wanna fall in love, it's too late now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491cf9e7dd152cb2f6f24fc96d61fb9efb4431a6a26394a19f3dabbdb1753b3. 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/TLREW2207229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a52f7d76bd5444705d5c89dce9250e256d1ff5b6e001b61c41707f27231fdb. 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/QZK6G2192622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04ab5d08cf9e484d7fcea6cfea09d7d23b79738bb3cfd027148fe2ba21f0e31. 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/QZK6N2195993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1472a11e1e02d5847446c7eae1e3cd575ba5a260b2b540dbb31312058a110c8. 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/TLREW2207703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e1062268604554844ee56e7c3bf344e5007df05f4022a3b39ff09bb42ee6f. 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/QZRP52154353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8db0c45224bc8062751487864a87e62191867b90df826f3bdda1f38558da6b. 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/TLREW2207230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0f005046ea8c4b7812c867ad45a101dba25d2f69f62c5376dd6f7a7554868. 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/TLREW2207231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61c30bc23e454b9922ed140e4521e90b13039ab906a390478e6e452374016eb. 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/TLREW2207232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5659deef7d46e9f23cb19131b57811e1b6385ed327cc8651e6becddb46abab. 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/TLREW2207233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70353bba99f3eadc62bf827fc635ad085c5d32af2d1b5661e4b875eb239d6cfd. 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/CAUM72300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b07268d4bc63c91be042cba9db01beb9218e44e0a532f86194430e83fddb6f. 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/QZAKB2164085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e1062268604554844ee56e7c3bf344e5007df05f4022a3b39ff09bb42ee6f. 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/QZRP52154353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a52f7d76bd5444705d5c89dce9250e256d1ff5b6e001b61c41707f27231fdb. 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/QZK6G2192622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc286f3a206aa08caf916e570ed2fd950acc8fefa1aa6ef796414dc2cb9f1c. 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/QZHN72111786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59e5c0042b3cff727a161fd0290d0a5bf3f08e5aeea289ad10b5ba13954f71. 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/QZNWU2027028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6802d33957f304dd671317c0c64c52f737239d028b378567641c73949b2097. 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/QZNWR2079541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc88c336d6fe3c5084452fdfb0ef02e6fabf412eb745dc93392c765c53134d3. 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/QZK6K2050699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259215904a36bbcb4dade3dd297295e2a1e3e931807202d3c1d641b1d225564a. 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/QZHNB2068602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c57444658825710f0072210e9d7b3a0a6c68ad293694546d27c46d707c0e86. 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/QZFZ32075859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2db3e0475ec9d79f0da99445a55d4e8566b527ca28e470b8cbb00a26627d28. 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/QZHNC1936826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc667c32c23d9e141f05aaf7d192c06391c300b51d709d7e943ad188514af75b. 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/QZES71802307.