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 0x36dac44c7f3627589a3745099eae3522d20fae2a6471a91fe5bc08605a2c88c5. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42053ebc-5da5-4e04-8c50-ba809c59852c.json and https://artists.proofprofile.net/proofs/artist/42053ebc-5da5-4e04-8c50-ba809c59852c.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 0x6f4844a4e5a2436b24425eccc3022489c99deee74607c33a6a0cdf5af0f3afcd. 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/GX3Q92475177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6ef980802eaca66b51bd7b338382d7fb7c4c71dfad7630d510b161921bafe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:50Z), 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/GX3Q92475178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383aa258a1b59d1fbd85227da52fed3da622438c3adeab47e989b13f1aebd1b. 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/GX3Q92475179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336c2557d81b82b6fa1ccbda7ff9ca681f849a01064e0bbdd9e9366e9d92230f. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GX3Q92475180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db07f3a2f4b0ab9d3d6c7a67c7ae8000d3baf9e6bff0e1de885e312b0b1127a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX3Q92475181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60449454f9a271119f4381ba598f66131c31a32e543582e2eb48c3603603307. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:42Z), 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/GX3Q92475182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c0a9fa45d8b2869f8401be795e4d7565255f71ad805f0861798416a6d6ee5f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GX3Q92475184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774a51312bc48ed68f309d6133bf9b781b16d017b402083254eefb1b5bb8d66b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX3Q92475185.