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 0x94c289ea891832bbf29ca6b77ccec304a18568f5e35861378f0804f40539144e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/230df2ce-5da4-4f82-ac7f-2392638e43ac.json and https://artists.proofprofile.net/proofs/artist/230df2ce-5da4-4f82-ac7f-2392638e43ac.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 0xa463d744eacf2ccf082097bbf42f9c8c38af01622bc23e6fc989c3fc6c3b5a83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEC830701253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb979582bfd64593f70e927e0b7af8c4d4b5bf430cf44b8b79abb9ae4df0f35aa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEC830701259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f863c13f2dc2151d661d6c2175c475845308bf583217c9c4516bba0665ecf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC830701260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f2999f95c6413421983a57eefee30a0d327f231bfb594a8a40a012d19a90f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEC830701261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476fc57f3a885c28a8e9f9d84841f8c2d975a6837de254ac3b8356eb58a28c8b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:01:03Z), 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/DEC830701263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfbc4d1e5a9e327480fed9f957ff1bb494bc0f6b10fdeef3e7ed857a7a76e8. 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/DEC830701265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7919506a6cb997ca8863113e1896e68fe83f88dca1b057a80793c778371c451. 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/DEC830701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595eabc319b4ee27016baf733f6faf26bf02cac0cd7fc666a9a1e4300b22fe21. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEC830701287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7590467ae8bebcb93ed41482758098ec82bc0d569d31f1930491c66c043298c1. 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/DEC830701312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10fcb2e74be1580aecbd649fa7571b171d165fcffcc8261c4def0c6e75aea1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEC830701334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019804b7be84f24a38eb6ddad45ea3d9c2ad2ced8ef278f5ee8d417bdb81ceb0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:14Z), 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/DEC830701343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d69b713110c403b48254aeaa4524bbe1246697e863c4be80e58b3d5989d47e. 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/DEC830701346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4394e45bf2772f203fa62d31de7ee630fb34af1cd2b93cb60d2312747cf6a7f1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:13Z), 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/DEC831600555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5eeb2aa5aad8174e29c6b93f313a6bfca3888a1cedcac6335161e392f4d68. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEC831600556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c8a83feda1263ad52888cc6e972a47ba5b9ed6dd385ecd4366fac7c3d74719. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEC831600560.