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 0x159034093f965974135818c38fa501f8cd5b4b99a5c65c8012514e65c44b8f65. 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/292bf102-75c9-4c6e-87f1-e4717f8c1334.json and https://artists.proofprofile.net/proofs/artist/292bf102-75c9-4c6e-87f1-e4717f8c1334.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 0x9e7aa2959f6b1c4f9066ef1304a423c533ee9248633b51e13c3f5eac601aca7e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZAUM72400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1f57db83c0a91c14f98490d32acdbaf97b6bd38868caf3165b4bd7e20ed8e3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZAUM72400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e98a4f702b3d5bc08d2f2e5a6c8bff03e2c6c5e74e8ba8c711972ae66cfa621. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAUM70800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdf19f38aeca74ef520fd22d42a31809eee220c1c4b6a9bc77f7a8a26ba4a0c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAUM70800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7366b8a679493d96a9128227c9063ae31adcd902269865fa865c54794b8bf38. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZAUM70800159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c21802bbb97534d44b1af4b6ca2dfabc00c0fe7c1f328caf025673450f31ef. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ZAA110400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf845822846044d9077fc9f122383c4ecf27227fe448f22c613b28da437fc6756. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ZAA110400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6210e7e389bd0b8abe2d115772e9c5d8a6b8c6ea608e129d457df3c94066b232. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ZAA110400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47ac706832423511d97003afd6ef3c2063a5d888cf7057765b74149e6b614bc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZAA110400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6cd5922582f241fa9b6d0f06067259b16c83d4038e6a399f58f376285ffbdb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAA110400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6038e36ae6362133f91da8cdfb80d115ac8c206a5fa00b525355e6f7719748b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAA110400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e49b78465eee2f6e578ca388320d1c1c53d57ebe5275def6eb156789fb0ff1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ZAA110500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a674ba085219ee9331450d40977d49fbf20dc1fab9fbc1194c7dc16e1428c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:01:54Z), 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/ZAA110500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf352912b103513e490c97fc79295acbff959bcb21a3f9f594775efaa8d3d57e0. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/ZAA110500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602edfd6c9b905f2391217bc305d6b0925f51660bd53915229be0987e357d27f. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:16Z), 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/ZAA110500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3e2468be1ce32fdf3fd82d7924329c3f9d3b93efd15e705564b52af19699fe. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ZAA110500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6631ce96c7f580b11416770e1cebbe4bd564dfb1048327f810b029a07594a72. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:13Z), 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/ZAA110500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e96255d96e3dbe9804957922b273359fa96643ee1dd01422460855182552d2e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAA110500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f3b841b13e3f9a9d788f9bd5b2b14becce9d21a5ac2d934cc7c086bab2886. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ZAUM70700394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6af5b12d26dd59a9a15967ade816ce8398e32ce229d96a57fe3c28e9e99d05. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAUM70700397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a70d930f05a9392aae5044f365d783985a3aa7f721789d2fb62b7b283ca9a21. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZAUM70700390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09934520df2abda71d3457de3ba14fc48a2cae62d564a60577608e23ac3939. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ZAUM70700396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca5438c52b2d1e1f2418cd863b77027ca5b182d1509246a612ab66797880559. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ZAUM70700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90ba1555767a28eed1a019610f76d8979cba2b2225e75518e49cd9e76e7c59. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ZAUM70700391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa06fb90b49ce067bf78699999c0b0edd6b55074d671e230eae3e0366f707e6c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ZAUM70700389.