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 0xc5677200ccc451ad2c502cdde0ae5658cda4d54e4f8dbf4da40c144205d90278. 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/6804893a-2697-4681-902b-44ce209e04c4.json and https://artists.proofprofile.net/proofs/artist/6804893a-2697-4681-902b-44ce209e04c4.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 0x12681249e302cb25e77a1116045fc0340873ad099fdc3a36ff662271967d98b1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:05Z), 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/USUM70957676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685ac338bc534b6d0c9f71980679ac7878e84f6401ecb8904852c8ea25871cc7. 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/USUM70957687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8549aaee62e8d479e3365c49bd951a39813f893912734feaea47b9d2b491c9c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USUM70957694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafdafdfdd7965ff80fb15ae66e0fd64f518653f00d93f68b1ec7faca427eaef. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USUM70957805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899ca3e2c2cf610a0912b57954ba9ae7b5282fd5f4ce8632c5ad9099e04e0974. 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/US5Z50900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a67f25e388d274aa8c35b446895a6a63fac71fe8b201ef2b8a0bc2f04eb02. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/US5Z50900243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0bb22e24d033e1296a34713f3fec5927d1b03d9db8d73b77619532bbc8a250. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:27:59Z), 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/TCABR1383835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3e7358ed543210521839684e0761081595783239313d3d9ac65842f310cfc4. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCABR1383886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4334d21611ed043cc80aa1cf758042f8005a162c0652ca386958d5b7e84734. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCABR1383915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0636ff745e059bd9825bc468c4d262120de26d1f639fbe6253bf642003395a3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCACR1668841.