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 0xd3450423fb744bdaa4bd9126a20c88695dc4101d5724788e53cb7d43130c3e85. 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/f00a1394-d724-4e2f-9570-92a2950c0462.json and https://artists.proofprofile.net/proofs/artist/f00a1394-d724-4e2f-9570-92a2950c0462.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 0x77643bd00b30d28995da0a1a0e4828ea6bb9b55f38d8d23d44ede166134c1292. 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/FR5GK2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fb5b71a0a08782dea5022f41a2a383aa5bfea29de5c9cb48e38c2d25bf7355. 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/QZMEM2398674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe276677cfa9e1b1437a8a823dae657740b6d4464ad6eb67065e5451ac258b. 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/ZZOPM2231715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a39c31948be8d0d16ceae13429e0f4dedac8472dd4fcc6c1403a37f87cfbdf5. 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/FR5GK2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77643bd00b30d28995da0a1a0e4828ea6bb9b55f38d8d23d44ede166134c1292. 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/FR5GK2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8416ba62e0c3ff647112553a6a0ebcd998968ab2468227e202d568e36b9c191. 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/FR5GK2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cfd58106fcd3708b967cc67b929a10259795f72bf39b669924a46c774e13bb. 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/FR5GK2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89d9b7ecf9551dc60c1eeb9efe432b401ccead3e4cf29945d9c516086db8e9a. 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/FR5GK2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf159e0eafc6f5372f456e7f31b744eea809595a5889e22091d6a929219dcfeb9. 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/FR5GK2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab274aa020795ccc3f49fbabcceb6bfcf6bcca739dc6644d07af4843630f99ff. 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/FR5GK2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32bb99d4feb95d0a3d9bd511fa083a27bb679a030fb603e7cf43d41863a2eb5. 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/FR5GK2300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af1bf67dde26f7e1f9e8803f3a0fc2373050da9f2fd65a8a9dfffc572cb06e1. 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/FR5GK2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f790c7789762f12b5d7f828c45c57e11740fa2d87b940f2b6a76a189e0aa8cc. 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/FR5GK2400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9fdcac3b76c8437d1cea7085f2a5077be785383696be2878b0ea275817bc0. 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/FR5GK2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c64c9cc01208ebfca6874c49376c6d0f02ce25c434108b280169928f36f7f09. 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/FR5GK2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe22faf15454798138d0017f177103edffa76c9d18ee0860328bbc2a866c3b4a. 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/FR5GK2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa160d4d7419623af8c8523abe8dfe52da831c054583eee988cb2bfcd53c063f. 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/FR5GK2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e4cf60c148e5095d0a08d42b37e51ed4457f3f413a82b01128c8a7bb630647. 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/FR5GK2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40966743554c52a1d324f7a8b3b8e59dc7ef7dc4ddf7485969adeaeda8d0e0fe. 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/FR5GK2400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4788f6735e136fdf6fb8d76065da062421988512c43694265901fca0fabfae93. 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/FR5GK2400190.