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 0x8bdffe46fc478df7a7b621899524cf74d19599f6adc5402ef380b26c6410f649. 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/36a0b552-e3a3-493a-b4d8-71e2792a6d04.json and https://artists.proofprofile.net/proofs/artist/36a0b552-e3a3-493a-b4d8-71e2792a6d04.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 0xaa0645bfce2a15b63b067a08ad5e6de2630814aaa07d0dbcbb628aa3cf76d018. 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/ITRWL1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a05f188051e478b1e2e0637e02678a4b9d359b2fde110474cdc5fe0c48bffa. 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/ITRWL1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a63e388b46ead0ff208a82de6b1c4956081f52336aff257a80ae35384eafdb1. 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/ITRWL1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b91bb32e9524d32e18fd13f9658d10314da7bdf7c6b113c40a8a141678c21. 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/ITRWL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b6df02c2a588fb17968caa54c099707e90cc1746559a68b508ffa6c0b3f9d. 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/ITRWL1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa077c31cff26e05ee4a83b9b5431c53fe3764430613d22544062c0e9fa1edfc1. 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/ITRWL1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd49e24c358b1370cc9e399f96a97ec07c8338e2889be2cc97df8be543e00a5. 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/ITRWL1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30eb95285259de7e6a04378e9999cc2ea1c943a9c25157cb4c3336c1be98fe3. 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/ITRWL1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb45a0cba8450175d5eda3928f617f0d350577116abf622a0912cff1d041322c. 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/ITRWL1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cd72a5ed12dfd78a11e8aeab22939455e9cfdb2dc776139d8d3cd28fde75ec. 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/ITRWL1900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5e38389bf249b30bc5efdc5628a2331e56a0adfe61f8eeab6caab22f90f873. 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/ITRWL1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffd955cdfaa7cdb8e0a5d812556d34c231618ffde0a3658ae66381a9a1bb317. 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/ITRWL1900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d46e8a16e1ae472f106b4e852bd56beeab2ad16f42b949095a73f6f902d0511. 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/ITRWL1900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0645bfce2a15b63b067a08ad5e6de2630814aaa07d0dbcbb628aa3cf76d018. 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/ITRWL1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a05f188051e478b1e2e0637e02678a4b9d359b2fde110474cdc5fe0c48bffa. 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/ITRWL1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a63e388b46ead0ff208a82de6b1c4956081f52336aff257a80ae35384eafdb1. 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/ITRWL1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b91bb32e9524d32e18fd13f9658d10314da7bdf7c6b113c40a8a141678c21. 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/ITRWL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b6df02c2a588fb17968caa54c099707e90cc1746559a68b508ffa6c0b3f9d. 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/ITRWL1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa077c31cff26e05ee4a83b9b5431c53fe3764430613d22544062c0e9fa1edfc1. 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/ITRWL1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd49e24c358b1370cc9e399f96a97ec07c8338e2889be2cc97df8be543e00a5. 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/ITRWL1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055350cc1cd10dedfc4e696e1a6123b7742d6377bb5cd79db63467595c79126a. 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/ITRWL2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c23bbc25418b425dab123d41980440fcb4d927a8f7a4d08bdfad5cb00a705. 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/ITRWL2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab989c0944acf8980e0ec1aeca0ae132f733490d7a77861e954dfce9edc8336. 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/ITRWL2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede9a750d72d2bc5654fe046c1b1a03a2d80be8264e811097bf99de79ec5ca0a. 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/ITRWL2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde89f21a2acc050b10968b955d3e29f7c9d4b474bea7853609e757f9c03680. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITRWL2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b91bb32e9524d32e18fd13f9658d10314da7bdf7c6b113c40a8a141678c21. 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/ITRWL1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd49e24c358b1370cc9e399f96a97ec07c8338e2889be2cc97df8be543e00a5. 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/ITRWL1900042.