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 0xce05d68b7e1ffac453cee10905fa1d52077957fa1d860272713d9ebab0be7918. 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/8c5859a3-3746-46b0-8aa6-a8ccf740332e.json and https://artists.proofprofile.net/proofs/artist/8c5859a3-3746-46b0-8aa6-a8ccf740332e.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 0xb35f9c522fc2d8b5968294297c14adb8f8bac727d7f254dfdb89f4502b3bb33e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:36Z), 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/USX9P1319154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1428f7fd8a8b40740b23ccf08d907300d8186fd5ada75cce8c680812eef44bce. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GBWUL2222136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec4b86633d8d374de4b203ebf6a76f9fc19955e9c8cb85c18c0f99d0bcc8d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBRKQ2366478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a85e91d0b35b3aca0ca4ff15151fd75bc92ba6a2000ac76c5a041172272ad1. 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/QZWV32352359.
You Know I'm With You (with Claire Wright & Mellodose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4ecadb58dc7bf9731605aecdbe7f6e716d5de422d0bb6cf657f08135a6fda. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:11:31Z), 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/QZ5FN2289027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a85e91d0b35b3aca0ca4ff15151fd75bc92ba6a2000ac76c5a041172272ad1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWV32352359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8885e62e5b9c3f082ef0d3af603f8e349edded21328cd20bde407ffa774fa7. 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/QZWDD2209339.
Her Melody (with HIRIE) - Ok Scotty Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507c439e883f77fffdc72b32b51645520d97735a7b7116462d78e69eb6456980. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:54Z), 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/GBRKQ2499986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1ed039c4d5beba4272dfb587c5e0f5b7a8695a426ceb28c5f5ade54025ae48. 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/QZWDE2495004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6ebe213aa17ce325d7069e9a400c72f53cf13ec97e204154db96a869880869. 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/QZTV32449817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba0d3d922082bfe6ccf35b1f8eb1d6e0a36d99a25aef9aff07b45d428b2a4cd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWV32467413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755581678b58b9ce27ae98c9232c2873e9566224132efcc7ae2b6035765c7e58. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBWUL2564923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef75f34caf5372a03a1d54688bd03cccb7c2ce81c509a1c89436d52f8ad0a8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWV32562046.
She's the One (with Surfer Girl & Tropidelic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41984ba8db10b237a44efa8d20a2201daede7d5e61ed9d1139f9a98c40b27578. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:55Z), 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/QZZEC2437036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf7b29cdbb647eaae76c4237515d8e82eed072c3d3e44db30ab309a5a12472. 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/QZTRX2352401.