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 0x774e746b8a00ca4d309bbfd5cad4457d20bad00ffb797bd59c6c5e980f22765a. 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/f464509a-a99f-4d25-aefc-1394d9f332e5.json and https://artists.proofprofile.net/proofs/artist/f464509a-a99f-4d25-aefc-1394d9f332e5.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 0x98930c022df4c9879fb03c767b88c8e4cf31a7d9be55cd530a3f767e119843d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7330dfb1c0777f6dd70630f28a751bf1da9c4ef021095f2496babdcb1779104f. 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/NLX1G2400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2831d64af881e2fe66ed8cec8260320176adcf0607f3d4e40e74818e7e21375e. 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/NLX1G2400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19938d6b476f24f358d7fe4ff0b79c537d4123d5086e89fa90c1d12c47cf799. 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/NLX1G2400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3f7d80f491d0be9384d4a22b4b08d00228263993d129879c66bb96ac619352. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc073621d0a8eaa0ddf28789ac663cd935ef6120aeae92fb8a8749edf5ea7fbe1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad19d74b6e31eb641dfa87e740a9874edb610283cd8a90f3d943dfd75a6f0c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ba65485aefd2bf8af082a0486de145aff50d26d94b2715cacf2bdc35e00b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9341a4b2dbfe34550f5b8c95fedfcc81f3970cdb8149f7ffe353dbc21f0cfe68. 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/NLX1G2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73651e93489af02e0337c2bea78399f2e7b7e5ef4b584eb13faf6396d07b9924. 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/NLX1G2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928976d893fb20c2f1584666ceba541869e2211672e8426fc1358ee6e9a72c67. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38bc3766987ba36ce7699076a35a6ba85f2b23a1e912d1c95c5b7faf2e6ed94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb47c1caa123a9498a9223942ba17f2e2b2420f378b50fbbcbfd720074c6829. 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/NLX1G2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f900b6e4b8e5ccf36e3a69e1050813fceab77cb5eca44a98024a3484f33a27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLX1G2400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5987ddca4c844ba7f9b5ec19f373e33515a26d389ce759e7582d639a45e44dc4. 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/NLX1G2100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc146678fb24348b3dacfd3eec66bc80642c45833f0c85d3bf69f10277af2cb34. 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/NLX1G2100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b305b6154e4dee1dd4c00c6f8b6c00d81a1b2ba05c2675292be9f6c25fe048. 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/NLX1G2100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aa04604f9256a469fc74b24a9a335f97ad2758fa621d58d2a0a1e813bfbc96. 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/NLX1G2100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acf6d9b14139f9336a05f838a40781b59fba47e06cccd6364140f7f0b5044d2. 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/NLX1G2100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfe8a8fec44476eecbd31b8a404c59863b2004ed08132b0b0d8781227b708a5. 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/NLX1G2100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8693b886d0fe1498ad448b533481ecf55573b9fe3b361e7f91fb3602887097e5. 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/NLX1G2100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e765e89b70aba87cda23e6f564bc7215334828e633a650fa05292bb244e4401. 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/NLX1G2100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a0135699ae0731ccc03cfbbcf69e977537fbe97f1583a210c2c035f7f1d6e6. 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/NLX1G2100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5187f69a3a6aed9c05b551ad8f1d106e9f461bbe1e25d3942b6befb3db4810. 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/NLX1G2100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559075eca49bf7f685483fe2b2e8fe830c11126583a24f3fc972e7d9ae27fcda. 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/NLX1G2100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ced25e628f5cf124ea5e2e20122fb3f073b94ecdca3907ed44f59515ddf777. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472275297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe8404ae0ef3f2a6e9f9298a9837e4a563dc9352e884fe6860ec7a093a4c1f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472275298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e18ff4346e29aacbe111c97190dc361ff7e7e36b032b555b903c331d753a2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472275299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea2cfab56d777084adb5a4d444f2bb281cc8419f478bf2853b75df926dafce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEY472275300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d113fd879d960bc99dc433a0500c54c7d74c73315de834798ef3534e3c34ec7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEY472275301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b86a7a4c4ae39bee860e8d84c964b24955d80aacc2279a0b2da500ca43ab0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEY472275302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9784407b7b0b8bdea65084751d41ab69ce1e931200e6efeb738258107fe0c94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472275303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf823304ea30fa6ecf85ff98f08d6a3c0bd4305303f80488bd4df764d1f7a185. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHB2396488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae217a9b27bee3be996f96710cc76f0065acd5eb4ed9565d22a7f0702aaf5d35. 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/TCAHB2396494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51668f4d47d3729e6ece84662ebcf41062ccc30e202de01a78ad6746a8689625. 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/TCAHB2396499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92353647e9d1a0261a9bb7a4d348cbd357e9c60e6bad6a7ce815eb6cfbeff875. 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/TCAHB2396508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eda08fd82bc0c0de19092f49b9955bbc6d87a0f447ec5dc462a9ce85d8814d. 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/TCAHB2396509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2836669362fa40f63732ae2e4ee4153f9efd8959b1461588851c3d0017f470. 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/TCAHB2396511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d3a3e188e9cd8a9166e8fe0ab9954fcf8ef93088231df4aee022cf5f15569. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BELD42100312.