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 0x534f5f466c6fca117d95636fe3b54991955e1316304a3ca2c2d83fbc69f1a6b0. 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/d3e525c3-2087-46f4-b716-27b966ab802f.json and https://artists.proofprofile.net/proofs/artist/d3e525c3-2087-46f4-b716-27b966ab802f.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 0xa4deda0c7970ba3abda141e9e6d99537ebcd7f68eaa075f151199f23f2405156. 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/TCAEG1945719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e0f44e39f7731676e84fab5fd5692e307b575e7dff33d766c7329cd36d4bb2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAEG1945724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65ec96209211a2d03acc2b577975c2b27b3239ddaf46b4213d39da8f5704115. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAEG1945731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03f9d5559c7d4636395fc41b13eb7d87647709a447aec62be98e10ba330030e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAEG1945732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c65eb2feef42de8a74e91047dc1277336246bd1bf6baa751af508b4afc8ace. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAEG1945734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e2363ed1019446ba3cd88b402eab8b44ed9a3be7c066680c7259a92eea06af. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAEG1945735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3402c88e10f82612ff9a3a36d73b18d5ef47fe49286d97fe6609f317c8910bd. 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/TCAEG1945736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c583e3f96ff9ddd919d5fb810c19c4ab173b971f73617e46e2eede986b221ce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEG1945738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe122bd69dc9011040839646952db67b05d6db8812ded5803c5d2ec57ad557. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAEG1945739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031156fdc36e547b5c3f0bd0994c86676de39fe252c7fdee53925cd5873be376. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAEG1945740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b658b25152d853517252b21a300acbd438d29aa68ecbf4aeab51ea08a0ab55a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:33Z), 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/TCAEG1945741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe72d3218c21eb9a0649ccc6868cc3d342c897cd7cbe5e98fb080de53c012e8. 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/TCAEG1945742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206e3c87bae7ea70f76cd690c2f9e7685f0991efd862ebd41a79ac53013e45f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEG1945744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dd515fa82c75e5e82a28da615e8964726835f357780fb004bd1573b3d8778b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEG1945745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2d3c08b332e8a5c3410ec284802f95dfac655926e2a74e55d8d4749724a5dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAEG1945748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34ef0d23b75e336e88e3b987ede1f721a1ddeb29de10db05bd8b7df34d6bcc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAEG1945750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf19a04f02e82f012157c04cc3df6a871bee89ca58cd2b12d2c0811c500a4cdd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEG1945751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa421cd79128025f39d8e07d6059ec2a64d15eab25f0bc31e9b8d9267fca71bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEG1945754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06046eb3c503296176c4d9a79ed328e7c0357dfe5b881d2f47c6ed18ccbd25ad. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEG1945756.
Soothing Fans and Air Conditioners - Loopable