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 0x621c1485ee4f1b9ed7521a0c8267eefc10ded654b77371ef04915b7dfe9728c8. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/936aed0f-3022-455a-b373-680849d30b15.json and https://artists.proofprofile.net/proofs/artist/936aed0f-3022-455a-b373-680849d30b15.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 0x9025d3cbb1b0d9ad1529d9ba36aecad9060a2a4d57298b7aa8baa1e7253c42c9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BEY881000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e96a0d35a4a5049eb9b4ac76a2e74aad352a13f68f98b003c6d1ed4515b329. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:09Z), 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/BEY881000503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa759693f321896324dd9441862311bb0e44dd2c6bdb1eec9250b79a9136340. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BEY881000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbab59456cee7b23050c402c6d206eebe876f3739788671886211f3e9c44800. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BEY881200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3852483214c10656a491b07d736b17ad63fba290f145e30e782a6c147bd932. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BEAB91300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c8b92ec5703a6f917a1b7aad2cd1a875791bf4e97e3bbd580fc500fe9ddd43. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BEAB91500013.
Vlaanderen Feest (En Het Is Nog Nooit Zo Warm Geweest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cec2c80f328dcfb1ee03fab23ee4cdcd0a1d886e0695d447fc451145b783eb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BEAB92200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf78ff51def9857bf4e5485ef610ec42763dac2f0c29d5504bcbc3c7b02994. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BEAB92200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5ed9136d7f5f87d4314d9bcb82c72945765c4d3c3d050faff5acdc12be8b1f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BEAB92200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04e36d990b7081f90905312e17c8f895cd7099efe07db03b8a019b33d75735d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BEAB92200035.