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 0xe83060d565f6e1672ef0fa63be2671f75c3b089ddd5b984248205ae7a0a1a26f. 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/f88fd1a0-8da0-4724-936c-3569eefba2f9.json and https://artists.proofprofile.net/proofs/artist/f88fd1a0-8da0-4724-936c-3569eefba2f9.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 0x85f1e3f33947d32869d18bc9cff9064d954178434c3bbd8c083f4648c1352649. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBEWA2104840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62455818da8ec0248b9a9a9f5290185b8912be3c4fd850dedc33288c4c5da155. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEWA2104841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe3fd281ff689ab54e2a77b247e79da4d6b98ff9196e38f2564483bf90483a8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DETO32300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03403ec2ec1005682db2d81fd0273b0fe288f5620e3f20acaa78571334c877bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DETO32300593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15a43a952a9ca127d65bf7ad6c8c6b05e17aaa11086c21b5abfc8abe62bb18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLV62107334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce6bc85e69fdb94e676421965f3956a6f43cf1824ccbf68089999696728f15f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBMYF2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296dace1883e156707182baa168e76e5bb34c5afd2ea31fe853e037bcdae6918. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMYF1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe511e5896dae1c803fd533d0b264047cf6e5e5dc2ea86149d0b0f8e0507669bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMYF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3878583fcc63ae3693b233165c9cb4f2548f9bda1cfd9544fe01e6a1273a45b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMYF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5017ebb12a7eff6eba1658a83d3901169bc28c6a72d295d6f88607c087889735. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMYF1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d506b79b85f02fd9b971e69255b744440b1eccb0ac92880550f2ec4649eb6a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMYF1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c220367969cf74a5dc33f8772ebac179ab39a23d6ddb40d5f5bedd5a73178e2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMYF1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f17809b3202107102579b8babcc61677cea18bf6a986d9996178755cba1c6e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMYF2200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77240b6183a28b547138d50055dd17de1ab07fb6a79f8319502d71475f57713a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMYF1700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce6bc85e69fdb94e676421965f3956a6f43cf1824ccbf68089999696728f15f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMYF2200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d19bfc76226bfb4cfc3e33ef760bb7f6c0bf8164dac34ee68c4e5d21f80c92b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMYF2200143.