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 0x5f72eb54e762a104cb988c299845d7f850a3a91e2826d0bd34119d81bf5c81a2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80f62c72-bc69-41cb-b453-2c8e3de35051.json and https://artists.proofprofile.net/proofs/artist/80f62c72-bc69-41cb-b453-2c8e3de35051.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 0xb4add471e5ca7e1a7188b7bc7f97bfa4d215c20a04d7f9a86f7e9cdcd77b4963. 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/QZNWU2354694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82de79e6b520dee815a6e4815ab9df34545ccae9464a5a64fea17a2f6b982587. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNWU2354695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c293ecd15adf27ba5d08d1449afb2305686e8208481c15b84f42c9216eb70a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2354697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e06056b14b156bfe4c118a46df5698bbfea85a35323e41c8fdac8cb67bb39e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2354698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a271300070e6c55e8213ddc9bd868790dbc088c5cd3d7a3266c278642bc5a8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWU2354699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0742b874345ee27e630ade663c8b5a46a15383a5442b77a4fd7e3f7b5d301c. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QZTAT2326328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef14a709423b0e53d4bf218cc2eb1546191b94fc5b02074d711ec3dabd3dba9b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZTB62397635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25796c839c67a0ca86fabf5e85fcccd10c62d9b329efb61f0c23b8e50d32e3eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:33Z), 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/QZTB62397637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb67ddbd23627f4ba36f9f4977dd70c7778cf68eb9d236ccd3189c18186609a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZTB62397638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276027dcf549b3fb36feb0b240d7ccbc5cc6b0bce075822c115f1b1649d9032c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB62397640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad6c3d74cd54493aa9d93020a33038a8f402811e49e93f57f984387bb37b1f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTB62397641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee0d0486c23234eba96eb62f999b6f201cd3db368cd0b8152ba40ea7dcdd1d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:06:05Z), 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/QZTB62397644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644428ecfaa23deac84b40bc47a98c2477cbc9112f6ec311832e597ed76686f. 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/USLD91783835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ada033cbbe96900abd30ab3a7eac9cd377aabb2a6cafce16621c22457750d2. 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/USLD91783836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0faa137aad5371b5bac0336a8e5efd9eb3c6f82299f437fd81fc0dd046d80b3. 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/USLD91783837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56095021f5642e4495295f5ade392eea39ba6798b357257d766ee43c525ab386. 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/USLD91783838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad532b7c4f26b05d4cdfab24100e151acce10ae3f602fae97457820a2557e85e. 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/USLD91783839.
Please don’t kill my vibe (feat. Blxckie & K1llbrady)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465f1a656afedaef0e07518a80656937cd7a33fc5b7baa9db84f063da680a39a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USLD91783840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2790b5bf945fd0ce381e7b90e7bc9cfdeeb987164dc2a3bc2aaf7e1c840f7c4b. 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/QZNWS2111550.
Aquaries & Snxw Present: Midnight in the City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bf64b5cbc00fad1c2d4ef1bf232e6f356d230b5931748273c4849efa4db27c. 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/QM4TW2325291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1a7d50c391fa78ac84e2f2c8462628ef7a9f47b715c4f30c091ed0c7da179. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6P2136725.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch