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 0x1a45511369efd1fdc930fa6977f0916ed2eaf5c5d55a3b3dd040ac16b7353c28. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec15adfd-6dfb-458d-89bc-24ca767a4902.json and https://artists.proofprofile.net/proofs/artist/ec15adfd-6dfb-458d-89bc-24ca767a4902.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 0xea9997676336fc822839f8ef95216e4a5a410e703d6ba2cdad7cd269600c834f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCRST2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac94cc0c53e7465631c5768708ff2aa281ccc489117092ba3d461e31cac092f4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BCRST2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17b716d98bd9621117e4caa1a9c529f72a61ca851f65f596f695cb8c0998409. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:20Z), 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/BCRST2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33361c5da41e0de303c860244641a63bee59f045614c3887f2bc00d7b61875. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:13Z), 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/BR9BY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a59dd25ac52e1c249a0726e8488ea01365f4c82058fa258ff95ca3bcb2e0b. 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/BCRST2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0151034ff0890378fbe7334c80d62cb016c2fb04d74c7118dcec57bc3ed5fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BCRST2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9d4c6ef8bd39203ee26288d21a2a7640e4feb2c8e363874528a221ff584c4e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR9BY2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fe7952786e64475db8aee3862dd59ead2a583bc9eb58163b9ae3ffdb081af2. 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/BR9BY2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f60a9043fc5e6ddad98b5a21bf15506473f65be7d921da924e6171722bf7b7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BCRST2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736eec9f9067cb1ab60709c3056ade8f0ba2e3cc6135f24e683eaae8ae6f8ac1. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BCRST2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95462b51a7180e312d4135b011a34a30cd296ec2a94ff3f7c421770158ad2d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCRST2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9cbe3e5e1f9de5b036f494a26a31ae2d36aa46052b9b0fe99a5ae7419cd39. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:26Z), 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/BCRST2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893f540fde19cdf18a43e6c5419059b77ea1e5fd1f13e9548135fe05bd933f26. 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/BCRST2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2cbb71931c8060592d7d93f96982ed5745a2966bb5f9fe7e8148630b708f92. 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/BCRST2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e19e9c24fa89a0782ac8c524cecd227347209102f963052d8ea41f7da0be86. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BCRST2500001.