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 0x3cdb581a023918b9534b2b980b460c02723d70c9eed2d96c3fa0a74d9c12e09e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a55bd18a-87f7-4b5a-a4cb-678de93cda70.json and https://artists.proofprofile.net/proofs/artist/a55bd18a-87f7-4b5a-a4cb-678de93cda70.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 0xea244e4fd87d0b21a43bb1e7135e9fec62a549d10cc037a167686e6eeab4a24d. 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/GX8UM2400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d368862a03202d0406f279a5f178efb76f67486ff11e9d64b28c158ba927137. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8UM2400346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc772aa4108ae2ba37ace0b08fc711c6e9fd1c683b5dc81bf2e203f976ae392ca. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GX8UM2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefdb457acc4e59ed0640a23d6c7693e57c7f9d06b1740851766872b884aa23f. 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/GX8UM2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cce9216b7c45aecbf66cfe7ccaf38cddd985a788d60c75ea38c0bdd19e51b5. 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/GX8UM2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578bfaf970174a805845afa7d9187109f7dceba4cce558b9db8167fd1df2e4e9. 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/GX8UM2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41d131de41cc6685f9725c76312e216e3f22f339e893c9ef77f013bfe832440. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8UM2400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8323dfab782df0b4ca38040fc0aebe9f0b82a41e17d4008f3dbd2e5c39ac3c. 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/GX8UM2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae64f79d3beb6423a0a72d1038ded1d368b6906c14b44365b61201f14482ac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8UM2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03636fc6e273185a515390dfe50a7c0fe3de4c54576721470e2a627e89343568. 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/GX8UM2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e85aad4190868a48ec90b2def1f62cf613f6fec8e32376a14af86a625765aa. 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/GX8UM2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ec765af2f540676a3f793779cd332ef401edc4abeee98dd1860f78c79acfc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX8UM2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a6138e3b25da92f5ec4e1161035bc396bbbee6a4f4bfd2c976a24d3afa0dd3. 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/GX8UM2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafeb2112aae2028ed0f427368d3bae742257340a1f0ce73f57c1b56b75390b. 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/GX8UM2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df937b0204c15bc1d3aa25c550ea52408ed3b8e7d244dd17125af1393fead15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX8UM2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9aacb942fe6524ddc2d1b8cd6e124913a0be26d847261548f1191e5bb939a2. 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/GX8UM2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0d890daa7ea0386c8487bb0f78d0f6d4faea283712e9527b45b8c2c901e879. 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/GX8UM2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107a0f2291010f6b8aed1045d72f23d290a7a1bac92a15c1577e614886544443. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX8UM2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e24bb9b6e77211a3988550cab4929597b8aed09028a5a4721e7535f62c9a91. 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/GX8UM2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bc07dff2a8278fb590f26a4238f51394125744277f66b9fdd82238165fa1cb. 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/GX8UM2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8f22230aa1613ee55000937b8a22f9c31a88d50bda23332ad938c3088a49c9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX8UM2400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc772aa4108ae2ba37ace0b08fc711c6e9fd1c683b5dc81bf2e203f976ae392ca. 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/GX8UM2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cce9216b7c45aecbf66cfe7ccaf38cddd985a788d60c75ea38c0bdd19e51b5. 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/GX8UM2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578bfaf970174a805845afa7d9187109f7dceba4cce558b9db8167fd1df2e4e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX8UM2300036.