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 0xcc9997403d6357e4d5a403ad6b0e52ddbe199b004f19a0a1761c69197779d8c5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6827695-6161-4549-9b11-ac28c2f41ba6.json and https://artists.proofprofile.net/proofs/artist/e6827695-6161-4549-9b11-ac28c2f41ba6.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 0xef3cbfdabf430291ce090a8f5e600d8818de7b4bc4a3fded42a2b1a51b10939f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/IL6432200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6434a24632ba4772030d7b12c079366af6eb8fdd443f6dfd9d668c829c01c96c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:57:55Z), 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/IL6432200816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8682bb14670134b37434ec205d76711df19e9edd71295b52ee37e2070c9eb33. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/IL6432200817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b009715afdaa4a7e0dc246443ed88657a65c8ee451def8176479a2d6c4adf. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:46:35Z), 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/IL6432200818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aac4dde277eab11ae43d05b79f6fa95815355565ef88cdb9fb219df21313434. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL6432200749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b0c6a5fb2561cf478b7eb457aa2923749063e1e47241c2bc6dc37fd527ce48. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IL6432200819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5967d0d082540c41cce8ce31967b94ef4d2291bcbe18cf6b6d3d8166a102b831. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/IL2DY2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5967d0d082540c41cce8ce31967b94ef4d2291bcbe18cf6b6d3d8166a102b831. 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/IL2DY2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f039bf9fadf38336ec53206d64e22d0f660c501e93b060480cb3c2a90c69c2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/IL2DY2500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb8d50e2701ba5250d9d603cc54c9e215338e1b3e1e847b441fd81d7cc07a1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:57:57Z), 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/IL2DY2500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2f4eb66c788f8d06ae1dda10d91178f46d079afdab5dde0e2e61ccab8b438a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/IL2DY2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d30f6fff688452b57ef0c3efa6c7fe0393e7d5b0a54079032ee8bf8bda17f10. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/IL2DY2500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5ef4a08556af85d563863795fedb47fbc1791344d83e418131d22f9d2aa2a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IL2DY2500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c62960068096b05a7347db648948506bf086c7bc26025381981bd429ea902. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IL2DY2500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd332d0fb1d46a347ac030c461c902dcde477570a8f95db5fc4f2e0b2bbf81e6e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL2DY2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09d29935e198ff614242ec052c98019002c3e00272ef03a7b307c0979d69861. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/IL2DY2500584.