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 0xd41ecf949dccf92d5da6f8c548cfb787b9bec290354bf5b10d8bc1be410acef9. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c8fc59a-d406-4dff-bcc4-80daa901d8a8.json and https://artists.proofprofile.net/proofs/artist/4c8fc59a-d406-4dff-bcc4-80daa901d8a8.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 0x794f89decc05914bbb49cb7c8501edc8b78e5333170c848178f79840e53f9502. 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/QZES52260911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b77d5bce84b1ba3111b543bc23e4ce38c50161278ca96d587939180f26d2a36. 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/GX3Q92340948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1532c4006064d4133dc81bf336a51151f99c441119bca7a3024feaaa1be1e877. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22263912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed67ecf5980369d0b81a23bdff542d12f05ff14644e4c143058c2c90b322d76. 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/GBLFP2352586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75e2b3b4c9a086ea3c406fc1e5f1b02fbf9fdd08739fd5243a9dc0b205c3c76. 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/GBLFP2352589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f9fa85018cdce01497d69684ff9d765f48c5bf7e67500d063ca5f78c82e6fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2352590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f8303de53ba4421fd7c1e0b53dd0d28d7cb501e38d8074b7597393152f4460. 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/GBLFP2352596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b77d5bce84b1ba3111b543bc23e4ce38c50161278ca96d587939180f26d2a36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX3Q92340948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2317610f7713cbe30f8720f16027f4f697bd8d0b35e3c04c8693310c8849758a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2352592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac8d0a5b23f8a462c14b08e8f85478a3421d2c7dfc8f561bf4256eeff64af4f. 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/GBLFP2352593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc247e9d45b1cc052cb9076939ff7423d3870e58d093b0ee4f5b450cdd5ecf89a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2352594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd698e7628ae9d30d3fca339ecc349f605f77a5f9a817e56b998db4eabbeb5e. 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/GBLFP2425164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c340201532adb4cd5a7c04e5fda8f56dacd25fb6a328980917d777aaeaf0524. 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/UKXN22339048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d04a6ae3d98a3cb8c81e2f327e539dfcff8a429b425dc40ea771cce9b2dfb6. 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/GX3Q92337271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcbcafb08b636ec1087b03e7f21bc13fde40493613d40440bbdd92de8f57ed7. 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/GBLFP2281234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b37a3a94ca037fdf247ac4629562966808d0f0017457eeccb56ee525df08ec. 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/GX53U2076312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8400417f7088db9f6038710af5e9f9a0d2d5479ac6b7c4efdc56c0bf90070bd1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2205148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a606e904848a8286c9f936ade1d3e31da8f3d73e0a029cb36d6a563c2492d03. 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/GBLFP2281236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8400417f7088db9f6038710af5e9f9a0d2d5479ac6b7c4efdc56c0bf90070bd1. 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/GBLFP2205148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b37a3a94ca037fdf247ac4629562966808d0f0017457eeccb56ee525df08ec. 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/GX53U2076312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b50fcdb0c35ac9fdadbdecacda0e170a3d2e5078397ebdfd58a03fa5611ed. 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/TCAHO2330532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636066edbe3ddf501290751940de6f61a2d2d0a0f97926b2f8e7bbaeee301518. 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/TCAHO2330610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb250f96ebd89fb6deca9900a487a0a415c618df229c74c613f28e1b8bb21ac4a. 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/TCAHO2330619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8427d651ea31656ab9f0317bf460b0b07bbf766731cca09a05f3b7f59c6b97. 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/TCAHO2330680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c852f990ae3080730516b9469c462949f4e7dceb4429189c1fc528e485f8b3. 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/TCAIK2446345.