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 0x0578291ad60dc47f19b93bb867ea367f9ac001743bfe3adca540c8996cc7a629. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47d1ed0a-bc2c-4b6d-a5e6-ab607f8fdbca.json and https://artists.proofprofile.net/proofs/artist/47d1ed0a-bc2c-4b6d-a5e6-ab607f8fdbca.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 0x1cf719c4443e700ce0443c9359f2b8820dd96a13fdbdbfe6acf501b12ed70aa2. 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/UKXN22331744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dd8c2a7828fb96a652821c3f12a657af75e780b9d190fa4639fda18186df43. 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/UKXN22331745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27808f4e2a3ab82fa693b4e984c6fc7f9dafa2d970a7ef70ccdc006d309cb77c. 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/UKXN22331751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f611f0ae2b5c7e8f68086157d265437d48e3f06dae4baed7d41b6c928c658f5. 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/UKXN22331753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0501e37822d75c5b6e9decafe8effd29c63de08f2aeaab0e7c802a419371232c. 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/GBMA22475291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893d4e5c8ee4ea552587a17f8e970714801c7bca2bc0f5bdc0e0bcfd4300054b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22475293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b909284dda5b63e37b336f56ff0ae90128ed81265a97dafccd184145be8f3e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22475294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c495884cc61254c958b31b3017772dc2fd3d00e2155bae97120bc4b8ccf4a2f. 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/GBMA22475295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1195b082ccf02c69ac2ecc75062dc21344c7957f489a82d3c8a1064c16581. 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/GBMA22475296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651ba2fcf8d32d1bcbc2ff082253326c3e533c58635e22c8baa9b5946437899. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:51Z), 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/GBMA22475413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a62fdc9fc349f1fcf7e648f08a0e6eaf9f233f241508605893e666f076bccc3. 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/GBMA22475415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bc9d1e9b194f5d5483c65193714a3006f7db37e48a2d518a53c36184af784d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBMA22475417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3d56ef9e77ecf1920630eca98c512f9031c503725b13a58d4aa13a37ab4ff2. 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/GBMA22475418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff853cef3dbbc1abf06028088237b1b6be3e048785241ac7c5715570d7a883c9. 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/GBMA22475419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2182a2b9d35b47d0725535f3571fdfd86bb2e98ca835b55b8a80d9cd6a8ce. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22475420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12c6fc6c04f8998d4bdb833f27065b562351df7169befcc8750ac0f19bdb0a2. 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/GBMA22475304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad83c1ee581adee59b94bb5546de39bf29ac2c7d0753305ec423c38d68ed1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22475305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8598532e3daefab76a2f67db2507c2e2189737bf4aa31de2b969509bc45d2ab. 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/GBMA22475308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba521f29e92f1c0001f390b606bfe8d560f972a3ff8c421a0a9f07154891b0cd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:43Z), 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/GBMA22475311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cfdc0bffb7b798806e51c9ef205d70b8c11292d5496d02e65e136c2b1e6c0d. 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/GBMA22475312.