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 0xf5ff4cb4d83ba49bd7a764726431bfc3a0b60f36ee12db30fc6275ec64e22ad6. 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/09ae1e61-3173-4cd2-8e27-3de132f160b7.json and https://artists.proofprofile.net/proofs/artist/09ae1e61-3173-4cd2-8e27-3de132f160b7.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 0xfe36a24ae0f6208acbb5bb432f1f764eb0630a69bbf3dd21326bf6e0be620fc9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BCM9A2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd190c9ecf93625b7fe3a9cc4ef665e137e79b1787c0a8a3efbd629b68dd07b7b. 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/QZNJW2214151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91539637dc3e4458c9029f6c27b78574cfe97180a9478fd13ebaf815dc052a5b. 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/BKM2L2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb164b691b1a129d84f7ddd636b4fe055e8a5581905cb7365b6f359cb7d2b0493. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKM2L2300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08b42f2b5099739508e284c6b2853aaa2a6f8117b26400aeb55b85d097a9478. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKM2L2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2700f4b17136cc4d4243d95f62d26eb2c509aae3b9b74ef7601ac7ed38d6e71. 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/BKM2L2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f6a3b07480dfb9bfceb63733d5413231d1870dd00ed126285e1e21d929368. 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/BKM2L2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5b4816977a851dbb6776b3954759ae1f153c15a1877733ab1fe5048e492c87. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:18:41Z), 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/BKM2L2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993245d66267db82c344135b49baea10fe799e134dc1f91c53dd786939ed29b0. 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/BKM2L2400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ef3deea8c80971164e786563598ddd45e0dc3272373a08bb3cd47760be81c. 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/BKM2L2400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc6b2b21b20fde8e8aa7736da7503ed8d16ba6ecfe51c4e2a23686021b4dd5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BKM2L2400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7851db8af974370e2abd7383d2735613d492f28226a5f64b0a8db4266560eda6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKM2L2400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b230d7dfaf303beb10cb2f71200480c01f9b4e3048fa18915908367482bbe0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BKM2L2400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993245d66267db82c344135b49baea10fe799e134dc1f91c53dd786939ed29b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKM2L2400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b230d7dfaf303beb10cb2f71200480c01f9b4e3048fa18915908367482bbe0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKM2L2400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7989703568ecc8e7d371dcc348a2e71f60b31b287ce9cb7f4c409b747be444a4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BKM2L2500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560813bf02de449abde6806805339bfe2c471dcbe1661b2bc3b0f79ae254c7af. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BKM2L2500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0140ac3523b15a71470348ce4505bbe94d14c085e20b704eb06a100e21fd7911. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BKM2L2500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46c9c674a9844d46f725d050ce4e1055039acdecf4da6156459f1782003825. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BKM2L2500190.