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 0xcc1dcc9f5b311598c318564b3a81c24d751fd120b5ec062b5235e99f36bbfcb0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba85b7c8-cc3a-4f7b-88b1-de6e501b5507.json and https://artists.proofprofile.net/proofs/artist/ba85b7c8-cc3a-4f7b-88b1-de6e501b5507.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 0x1fb2b70e8538af88a6064ace29ab6934fcc82ff4af2f74dacbe6926eac759ef2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:45:09Z), 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/GBLLT2348213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d7bddbe9c16a77f1822c5b13ea8a40294365659a46374e4ddc611f76c1f94b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBLLT2348334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053583aaf0fb66ca504b71113c18ae42f35690cc4f66e4b88f7a0e2e7f7e76c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:19Z), 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/GBLLT2349933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4f4e1cdebc20ebd3cb0506d105b9bdb80fba1a6cbbf387751b2a290a1ba5b6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLLT2350888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8897d47dccd969e6a67c256c9dbaa349ca2a257b3ea0110a4ff165f37c61ac56. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GBLLT2351153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f768491b9afabf9ef787537e2e208185c836ac1fa0e06288e5f979aa72b5ab. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:11:05Z), 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/GBLLT2351312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f62c34c2615a3d0f9c92c254b10ff198d3233ea01cc745b8bbdfe9e5fb740f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:49:14Z), 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/GBLLT2351531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fde5a92d60bc71f8c279dad476f5723223145365117c945f5a0a4cec1144771. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLLT2351926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cb1e96a9f5368d7a7243e9102470eec91da170a3e72f2fa1bda97930c3e6b1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBLLT2352399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b6ad541608a718d918b741fa6a117d8d9570e74906ce668df83401b495f741. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBLLT2401757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c261644d44b7b19ad64c110d869b42274b1fd9df73631b2400c082a96f423ee. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBLLT2405751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026405aae1a75646dbb5b60dbdecdc95b7c9d26fa44568a24a88ad6aff1fcec4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLLT2407313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cfed1af4ed42b2c841edf1a14f578a33fd160ac2cc223bac4630bfe3c68e63. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBLLT2408157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18605466b9f29f69bf917d290c24145e4f531858545b8742eaec7c5213beabd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:25Z), 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/GBLLT2411479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207bb5ad5a9d93ebb40468ff0cd9ca712c3f5ec8d91d191e2609c94354413b19. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:51:27Z), 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/GBLLT2412047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae949f44520ce209c8a98b8195895e888020521e4b9c1d2ee7f9fcdd5937e4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2412048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a704195b5fe3b6d50e03eae346a43c84da7fc0d790beb1ebccfe016e4235c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GBLLT2505891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea08ceadcb02e896fce5b3f545113d140cdabee8b9066d396e44cecdc93fe2. 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/GBLLT2523286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b8a904236c588daed3d7cd63542f77ce9dcc09a616b21abc8e3005baa1637a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLLT2526173.