thumb|An inverted pentagram is sometimes used to symbolize black magic Black magic (Middle English: nigromancy), sometimes dark magic, traditionally refers to the use of magic or supernatural powe
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 0x8a5691ff450c9d21214e4f964ddf8f8d1f4ac83b000e7ef46b2ee03858ed9ac1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac768d1a-cd5f-45f4-b9f6-90f5b50d77de.json and https://artists.proofprofile.net/proofs/artist/ac768d1a-cd5f-45f4-b9f6-90f5b50d77de.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 0xe9098d9b0e7c9c46bf3266f9400e02fa30552439c99e9e8e0ca0d6a5d5637772. 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/TCJPO2197975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b47550822cc17871b472697bdf9b17fe20624e0647495fd7fe3681349ce3184. 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/TCJPV2312615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27078c4e549973de3095e255465dfa048b84c131147660918bdb561e0eaef2d4. 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/TCJPV2312621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb24f43a6cb8b0220b21dff4dc4644eda741ad659ff2792ee17acc695ef34c0b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:43Z), 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/TCJPV2312625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acb0e9ec5166c4626365b1453d0e6a24184cd06123aab183b8d08915514972b. 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/TCJPV2312627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482fe046c3da214ffb242628f02d9c54799d6d5450332917cbcf7237c15f5ae6. 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/TCJPB2480686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755a53b62816e99226cc41e2d2c58c3712053a1634d0b63de237ad9f242ea044. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCJPG2556929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e59f206fc9909dfe5f1fa9558fb246db733346255cb81e82adbcc5ca5ee58. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:48Z), 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/TCJPG2556931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dabeed21b084cee1c9b4d39649a0ce32e2c1e62975fb639ba90bda898fd722. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCJPG2556936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306945681ad09a06eb36bb4de6417f442311138beaa2c12c9c4286d4fa628715. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:28:20Z), 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/TCJPG2558752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50972c62ae13d386200a9f09d98b70a3160d568c5b93a37c5617663ae04c7be8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPG2558754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13661c341fc4b5c540904a08d44947954885c59ffad9c3b0c2ec005e73f7afb5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPG2558766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc16e3b249628084d5a7ad01ec6730a3e21790c98615c537e52fa79702d55b02. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:21Z), 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/TCJPG2558771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e5bc38691057b9c51fb3a4bb4483cc812432d95e2747ffa7212bf3ad796aa4. 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/TCJPG2558778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f322ab8135aa2da545a8441742c0e4d595e05a4454a1981af5458d8f3d0a1c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:32Z), 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/TCJPG2558789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cbea5494cdf7e60c19ce51ab6caa046454fa676ac09ffb20720945d4c4dbfb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:10:28Z), 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/TCJPG2558802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1327314faa93ac3bd82fafe08885646be6284c9f5867932995b6da7f419b969. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPG2558827.