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 0x1365459ec2acd06cf9f18b0cde77b7b38ec6c8dc7259f471cc0db4bd07ce0f4e. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/034cb339-4755-4212-878e-6d25c30689a3.json and https://artists.proofprofile.net/proofs/artist/034cb339-4755-4212-878e-6d25c30689a3.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 0xb98e780a3cdb1fe5eeb4f672584042b683f2dc92788fa8865dc1d86c1752028a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7S2531738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b469eed3c9b4c73bb4fbe47849aab02b116173a77f66130cd55d48ef37d5fe. 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/QZZ7S2531740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e3648a45dab2fe8feb226ca028850e7d4522963feaf1e5daa5ef4d44c7f316. 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/QZZ7S2531700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89725fc97ad9f8f4ee301d3b2ece0e63226792b40bc22a6ff02c546f04b49d2a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:41Z), 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/QZZ7S2531692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe41926cd913d51efd5b3a487cc8311c1743ffd40d454c425a1986e118d47a4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7S2531807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1503731bdf68637e04bf2452d3fabb369ca9e574ba981608bace53d8a2e48c9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7S2531958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6006640844e73ff173429400bef8b49932c504c76b6fa3d2715ba6a69ab0226. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7S2531734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f0847d0d4f378be1d04d5c7a50a9aaf6f7d9fbbf2af8a3d0b1c131e8feaf09. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7S2531809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e78bda3e3d288192b42a2256ed58511f9a4ba00ea211dee55538b64dc2c97. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7S2531805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363d30d91d3dfd895bd1505aefafb6aa78b9e0e679cdd7599286e142aed23b8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7S2531693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bc0e9a191de2e30bbaed5ac773d42fed564895bfe1b22757064fe2afeeabb0. 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/QZZ7S2529568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01199f1c0d2f4a41358f02c40fd8f72d9b247355fcbb2f2f9e5c1068965ca3e6. 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/QZZ7S2531780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4faa0102b4932c65031e48d59d06c0315b98d56debcf2a7bb5946768441c888. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:11Z), 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/QT3F42514393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc112b506ad988ca6f276ed571f7c6ce40ccc952c4e244f275c6c2ec431efcf. 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/QT3F42514394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacda4f7696da7811ad2fa33e73ae67ed6d22e4e7d915d2f78039521285f1a90f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:57Z), 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/QT3F42514395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f506d9d04c88240983fe04167f199dcb9a4e545c1cd9ed297b439d87f7d159. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52501350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f2ec45b1aba0b1a7f241d34dd58f32f83ddd81f1c4aa2a274973350c84835. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:21Z), 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/QT3F52504057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb14611a3e3128113df7f620d9c158212dd8d8afa284b9b05eb16273c18120cc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F52504048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6901eeb4050d9f71f6f4c627307fff8820600d03ac11903f81b4943a8c54f577. 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/QT3F52504053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eb249942279057ae17f71e7b9a27509006d9288df8abb41bbc1005fd339deb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3F52504050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedadd194c0fe622b710d8de5a56fbfb5e964fbccd850a0443dc47c58f2a67489. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT3F62517082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd9d2602a6ffdcff162daaf43b91cdd617d8249fb5156223f296068fc5ad6ef. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F62514181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540251be04e356390bcdc8c56ff9cda4d5adf2f1e8ddda534e6366a1c8b2632. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F62517075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfd345e86740f4e967e8cd0eeccaaeb4dd5f897875ecbe5a529cc87526af3a6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:50:49Z), 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/QT3F62517071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd9467dd5cde5db8fb5d8a30e32256bba75b78f591c36e11d23586c16d2e3da. 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/QT3F62517113.