1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x520a3f2a85b914936ffd9c594f672537134b614a97a190f404e23f9473d35037. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7191751-a9b6-4674-9963-6f2eb4fbccef.json and https://artists.proofprofile.net/proofs/artist/d7191751-a9b6-4674-9963-6f2eb4fbccef.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 → block OTSBitcoinBlock must exist at that height 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 0x776b4061ee10f697a169eed7620a0c0fa033398a054e2a53c4d3a5dd9c0f9815. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKAXK9660703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b073c6bc10a078ea51c0d83bb057abacac3923d6b799fa7ba058db0ad319e19. 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/DKEPA2100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7742adbe099a38aec4a908d5c5de1b4c3e4c53da9941c08fbf864400f0ad1d. 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/DKEPA2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d297b13bb9769d58b842bb05b378ab2879835cbd8b29a5ee9c7050cfeb27fb. 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/DKEPA2100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaafb82571c2466c39ab7bee147aab455a777c000e72e82fb03f429af296427. 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/DKEPA2100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae86e23b58e4df8fd92cbd40fe4e185eff7d0a38b2ab15c9d9a28569f61ad1. 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/DKEPA2100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df055558dc873f4ddf49d6f006a3216d5c00e410429702d26436f3c6e6507d. 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/DKEPA2100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d142a9798e58f98f96a28c09161e18f0c54b05ec2cf33aafbb292c4f67b829. 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/DKEPA2100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b12672752b766d098f516193fdfca2938b62e0d6747e988290064b588fb04. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKGXA0700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41522c827ea1f394a99a9633d351e00a1c23b6a547b9f49f55eb64ef432e644c. 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/DKGXA0700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f6e216dd54f12da72b451770c1393dbb87a2dc772774c64f1cd18cd13ef50f. 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/DKGXA0700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b278121a0f2fa20d222ff3995bf6d1cb46c628e461cd26bcec87efd4f89b85. 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/DKGXA0700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12bb970caf37d227daf828195dee34b9dfc3b716a8619d6117917278dabf489. 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/DKGXA0700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e935c8644233a05f0bc0e11bd2608d73e0dec2923691bfd85f92d6570bbab. 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/DKGXA0700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91eaeff7670e7ec5c894f965b01c77f2715266c11994ffba948617fe7e59beb. 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/DKGXA0700116.