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 0xe2d42a2351391ed478a2ff7f7115b5141ced76ebeba18d52d04c789b855feca9. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d77721de-679a-4d52-a1ae-a37443aac842.json and https://artists.proofprofile.net/proofs/artist/d77721de-679a-4d52-a1ae-a37443aac842.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 0x2098ac6a00e9ce500aa0098633483279262824fa11fe1e04f06a9c9fc61f2d40. 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/CA5KR2488665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa262215daa97d1aa5ba6465d34679d8a5c91216cdb040f1ff63da904bb314. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2488669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4dda7f231f59926f0e46054a1fb38d0b82a41ab69fc8b9040fa1f589f2018b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2488670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d026233d82dd3910039480a7a30fc9e2591e8494da35a3b4a950c719e4825e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2511888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b6c5f4d16e11c6870c50a580af5e86f690b6bb2bfb4f8f32ad0e6d3b013ba. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKQU2508254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea4e419749efa015ecf62feb340762f80d52e6fb5a10fec28acc3fb4ed7ff4. 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/GBKQU2508255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a9b2b05aa6397ac9ab2aee614711db84ccf1581402b4c1de2d5ffa8ea5874. 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/GBLV62419187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b88f302d22c5c282426cc59be5742aa78203606861f663f9cffccff0220e682. 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/QMDA72455723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84523264dda4b9afb72ba6b40ed4b02d5c956f15c7335bcbf6b2501ae2e12029. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA72455732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0a1db7c4a6c32c6f8f0fe9615243c231cc6a3daba35cd2665c2048b5b85dc4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2480767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46475a80a6a95f8e45173a2e3e2a1c333d411efc7e4c857cbd451fe242040f71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2480769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05104a4961622ae0dfeada4b4740fac315a0c01bdf1882a6e049398b76d7f36c. 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/GBKQU2449406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a14a952e9a382bfe800bafad9c04e81f377fb01e02ae289a6bc46ebe41c3553. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBK6Y2451271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f443908fd3d1e7695c47512a017b26f4d68e6c6e4c2664852eeedb96eb61f56. 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/GBK6Y2451273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dab54c791b4f517cf3c1ec7b08fd687a5d377d9ae93eb271837bba6e9dd46e1. 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/GBKQU2426089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b110463bddb2b8399f69d9d6e8ca05cd2505d1e9e287ae95e46d057e4eb106f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH742329194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6811298f17a0f5efb5e958fe521dfc799ccaf906eba52b5f542175f59cd59. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEH742329195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1454cabac891327361f85e2561b10ccd484ae36e64c0aee25afcbb68db004e3. 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/CA5KR2356286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93253352d0b301a24c4d2cd17ea201fce5c81b3d775f1f48ec93f2a71b1d9f12. 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/GBNUQ2300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6e8ebbf861dfbb27ff52bf3f45ec69af70cac68f299bc4216544ee40c600e. 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/GBNUQ2300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e95c0d4fcbb92386b966509bf95ab260da3590ac1825213de9b440ed9c064a. 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/GBNUQ2300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c94b125b8314088ea83e79d4cb2be03d1e05dd92de769915969838a4990cc6. 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/GBLV62419182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a9b2b05aa6397ac9ab2aee614711db84ccf1581402b4c1de2d5ffa8ea5874. 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/GBLV62419187.