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 0x5ce2dc492aee77898699e3243aefeea41a0bb7a1f63975cdd1231cee93f1ce2b. 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/00e69a71-badf-4da7-916e-36131c41ae43.json and https://artists.proofprofile.net/proofs/artist/00e69a71-badf-4da7-916e-36131c41ae43.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 0x0e852ba3bbd43103085447a076fcdb9f0e1e87743edc4109775d31063b27bde8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FISMX9374304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e230c08872773f2da14d0dbfaa5a7545a73a56be8a89efa3e235047a62a37. 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/FISMX9374306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01631a53e69b273f286b054a9967834c07bbe4ac475e2299fcb390364cc95401. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIMUP0200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae32329e28d995bb819e5a1c17e5158e954e54375036771970f1c481edb5ca12. 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/FIEFG1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b6088a44a75345643dd8d8a6b5b5914efed1d13ec8cff45a0fa353762d85d. 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/FIMUP0200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b2744943de42daa7b22cd48e3f9bbb95405ff1ab908e20010480208f178a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FI78P1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b971c223361a2fdd9732b5512853b60c7d02015c8e8e35887c1a3f6c9a5e14. 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/FI78P1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45b0f297eab5edb0ac0547094d2668701e22b62acc4e9fcec9c0cca1154b5e7. 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/FI78P1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe759eebfe8f3829884f095b70740f851516c5c04ea2e883980265c4716f2efcd. 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/FI78P1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb2c30afef11a4256fb50d0e5a1751b979cc38e2d452eafbab072177415bf9a. 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/FI78P1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71376b0107a35d30674e26d6e4c4ea671b31d99eb51960cdc441c954b9a4167. 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/FI78P1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb39e8f370f1252f8c93c7ea079f5af09aed4774d2c4d07f0e0e144b3fa062. 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/FI78P1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3197d8291b5bf91895f1243117bc50f133920a3ab4309726daf59451e90a291. 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/FI78P1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d4efc71e2db8f21af9dbd5ef3f9d4dd1d40ba33d33ec62519abbd5cd9b1eba. 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/FI78P1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b971c223361a2fdd9732b5512853b60c7d02015c8e8e35887c1a3f6c9a5e14. 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/FI78P1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b2744943de42daa7b22cd48e3f9bbb95405ff1ab908e20010480208f178a2. 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/FI78P1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe759eebfe8f3829884f095b70740f851516c5c04ea2e883980265c4716f2efcd. 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/FI78P1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc9bfd534c947a25844e326b28bc9d949906c18408f859258ca409f650862c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIJU22300002.