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 0xac831651883415a6cc300fabdb1ce3f9696e1d7dd6bfdebc7a37702d7c19cb09. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b385b5f0-e4e0-4c01-b65f-acd79627320d.json and https://artists.proofprofile.net/proofs/artist/b385b5f0-e4e0-4c01-b65f-acd79627320d.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 0x0c2ce9e7f9aaabb63f1289911881ac2038d688674ea4602533afe78d71ff06c3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NGB5S2500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c8214d0de284eee9052ee701b0ce8f37cf8174deec9c200bcfa286ff29dcc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NGB5S2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18391dc4ea75eb264a4a8369cbd92dc9a6b3b71e8950b0cad8da02fd1deaff8a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NGB5S2500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017ddfa517192801b5f599e3204370296e880ae090e78bea6d41330e807b5187. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NGB5S2500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c00a942a779e88e906e3d70d2e9b0e8315bb5c04b00cc7478e79c0d38e23e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:27:33Z), 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/NGB5S2500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68d57c1fb4958dcdf3a3326ca49533dbeb75fdd91500853c03637c85a3d83e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NGB5S2500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce50b2f3b6408bc23c317e718d5b75f6323ebb265f919986cdadffbdc70178d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:14Z), 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/NGB5S2500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15f58ccca8649efa5bf9285f8ac2d6e356b44aa814364031d63d51f6d9282f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NGB5S2500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b9799c9b5c8f705988a6270bb461ec319cd0b045372164fc715b768066056a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NGB5S2500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b443f6fa06550137fcfb75824ce22bd05adbfa89848bc3504978e7f421cda55. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NGB5S2500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a4a3779caeae549d64a104dc24eabf7a857da51fcf3dfbe2e9b9a9a373bb29. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:40:17Z), 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/NGB5S2500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30295feffaa51ac57fd7e8fccbb04b75f9b7eeadd0b24436fa564cd951aad78. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:51Z), 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/NGB5S2500561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1a818fe27e157980b3923463fbadff51f1068608b4bc958d514cafb287bcb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NGB5S2500562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ded51b3973faffd1b4a1b7e8964c75e23eea3617d2b59647a09ef6811237b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NGB5S2500563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be7b95e75104c1fb6e5bd0040ca87311e4a0525f6017a6bc2e55883ec8812a. 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/NGB5S2500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6fa4de3782e1ceaa3faa21c7d4897e06e542f2a1c4e73df60be2e0c3f06e5a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:18Z), 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/NGB5S2500566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac299b419ceb0420d906b119c1e792ec898dc79e3c7ac7cbd0296af40824c1f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/NGB5S2500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bf1b5772509e0395ab69843004654a5c5499081a04fc2ee15dfb3cf79f3fc4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:34Z), 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/NGB5S2500568.