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 0x09c7c6de409eb94f5bea5872c689feb8c5ed2967f70f18071534235453ff55e2. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c7d0bd3-6ae1-48df-aaa7-77ed91f53d8e.json and https://artists.proofprofile.net/proofs/artist/6c7d0bd3-6ae1-48df-aaa7-77ed91f53d8e.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 0xfe3a4fba3656e3152705bd89e61969c524a292a72a6db0f48f781f5882bb3e8d. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GXF9Q2512398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb35d1f5c8ab138bc45ca5417262bdfd388d3583bf9d66ce7e5cb2120d199f0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXF9Q2514289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc7eb477d2dbc9d89c2c56afb4ad28e75ccfbffab4cc63aac88e6899b8a01a4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:38Z), 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/GXF9Q2514283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3462a7071c81bc5a0dca530b2ae950ca95ef74d07f01e7ff736453d566de399b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXF9Q2514693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac85f3fd04220e9529368809d6b911727dc21924ffb37aeebe0bcf93b22d08c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXF9Q2514083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c235defca3fe5deb222f2c9ed9e948a68ce6deb0e360368a5d82eff0a88c1ce. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GXF9Q2536552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5dc85e4922dcae554d3b93293a736713329040bce66729479865e371b1d799. 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/GXF9Q2536269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28064d4ca59673a61e36016b58d18bb6a3602acca39ee769c8cc271e72ada4b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:25:30Z), 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/GXF9Q2536280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f931c93926b5a0ad6f1a57d4f586d7d569f7200778efbd54aba6711cb03b644. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:08Z), 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/GXF9Q2536458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf753d1cac5c6499354da5eeb93f07c6500e1ba4a3bc61a175432dab2cc9f2bbe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2576074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc1a0f9524c442dc8e15465e5c7d9bb2a9dc68d5f9e4cd78ad6eb6b8e77187. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:29:39Z), 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/GXF9Q2576071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b5ac8c16cf8431e3cafe79c45ca53b303ed5e53c953aa85e1d52a797d47b65. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXF9Q2580437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d19e5c3f09fe5838d61f0408b58e389b3a5a8f24c18c6104644e2b3651d706f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:27Z), 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/GXF9Q2580416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208e6887ab2c1f1b32f9cf43a064d25afaa2c6d23459534e7cc37aa084432ef. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXF9Q2580434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88324c024e8c6d5406f69e71b28c68ea45acb6fc5bcaefaa6300e0df74f2b4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:16:12Z), 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/GXF9Q2596023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cf2618c85ce9088dd8229454f80d5ea10e3df06ed875291afa3caffa4a790d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GXF9Q2596018.