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 0x1518016b3f775bfc5462b88929327ac5f80f5cf7ec94f5e7bd3fb5ebf1aad571. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c538baab-75e9-42ba-86de-b877fe43ef89.json and https://artists.proofprofile.net/proofs/artist/c538baab-75e9-42ba-86de-b877fe43ef89.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 0xd84b51c48f41e5cdabfcee91d53ec9d9117e6c679f7831c539ee90e1d11a6e23. 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/PLI292200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeda636d31f85c4273f901944a2f59268c86b7f58021b3f8b588430bab45601. 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/PLF241705281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73665de86314a9f12a30a93f402279320815d662988eac5bd88fb408507a116. 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/PLF241705282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e46e8c272664f75b160a6fe387437447c5224dbdc1eabd75bac323fd6bee23. 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/PLF241704844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b5e334822c03ef6463c6320c3b2b0cea7576a046674633b539bf27d1d04cd5. 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/PLF241705284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0e6d8fe957aa01f37c62923050ebbfaeccc1d6c3b59a2ea69ae9a7734aafb4. 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/PLF241705285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a2eaddaec28de97ab92330f35842c4a24ff75b6855b83e942aca47fc481886. 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/PLF241705286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f679705bc87ba956c45e664eb0f4957428fc490b52eed631692ab696173027. 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/PLF241705287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde69de92692b8275ff1f0d25f5e4bc7b82ba7d2774ff873d6a006f55deac2f2. 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/PLF241705288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbef4ff555715b5efdd10f3c613c5e9e7dfbfe0db3dbfa1c7c6937b6be24a9ad. 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/PLF241705257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3040b07ba5bce01903f70c67c981f3969fe4a645ebdf96db7363f071b0b97b. 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/PLF241705120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19406beacabdc869bca01ee6e6e1faa283c85702963c83025c08b80f0c3a5e2. 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/PLF241705290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec869f95dd400c3bba5215b3d5b7fa2dee1df911428988fda4575c108c76bf5b. 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/PLF241705291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2871c71f2683dbe1c345b153d4689e40803f5fec666ceb35f14938a0579fbfd. 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/PLF241705292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a11995bf8899d5064832b344a51e9e730a7c8a49cb4ce64048c1e3eec100c0. 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/PLF241705293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a4c3d326903e7c7a387b7803deae8565599073666b509527b7466892a4f11. 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/PLF241705294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa363d6d4574a526932a95a007345efe1b019d3634e580eaa1297bb9c21ad8ff7. 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/PLF241705295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b667845f45e961a5b9f8aac1e9a2cc83a1a2be6e48a66d81840069b554a562e. 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/PLF241705296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740bea73da3f57c1b2ac9fdef967eccbb97ab2b930ea38ff9ed85172fd7cfdb. 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/PLF241705297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80c5ef87ac273ddeedeb8314dd42dfb18641b90324792c670ce8b4591244bba. 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/PLC062240977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734e001fb77b31e405260aba1debd3c05b4ca968f37788245a5c5d7822970578. 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/PL70D2200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee2c71cb4f505159d3c60b61d69072fa1eaf06e7c94d3bd155d32585158963. 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/PLUM72200467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156c0866e9b70f27ea2f0a9323b9eb8c00552521f19256e7fac44ca8cd704332. 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/PLI292100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6075dcb68ba7e7d64a131d69fe493243a256386ffb5c95b0a93f856f58624dbb. 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/PLB382400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dea54bd596f22f8b3d7298a42867354b08ca30c1352cfeb204e2cfac884d45. 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/PL70D2200244.