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 0x40a5f9269c33950ab3f582ba1b74efd023eff0ddf0662b799eb68139dbf2e623. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f13c3c5b-5e83-4a9a-b8ad-a2c6c962ac13.json and https://artists.proofprofile.net/proofs/artist/f13c3c5b-5e83-4a9a-b8ad-a2c6c962ac13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Raise Me as Your Labourer (Prayer Chant)
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 0xb55d28a961c8bb79244c0d1529bce0f955da609a85a931090b784605c4c889e5. 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/TCAIP2417210.
Receive This Living Sacrifice (Prayer Sound)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f48740c7310aa774b3123b9c319ce3e0bc4d3888f5d028aa57dbe57e5228a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:26:39Z), 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/TCAIP2470772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba28d52cdebb7c52723d807c94c6390e09b095b8fe96b2d61e508e5642d4380. 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/TCAIM2467217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a840d7c5164f00b336e5b95c39189a14a16873d50e4e0adce1ba7474a1e7c8. 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/TCAIM2485740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5904f97b2656c07441423d2a53c7ed9624e8e1d60aadd15de534649c62fe77ec. 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/TCAJQ2588410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a1eaa164b2911542895fd1c73326cb74991ae3310158019e59ef870f08265. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCAJQ2588488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916d27536817be496a741aa6baa31b5a564b7c572c7cf32282bf03cbc85b9b07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:26:10Z), 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/TCAJS2523774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ba5d577b29f3a5f3f824972e3d9969e32fba5e25cda1beaa35669f8bba4d35. 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/TCAJR2562413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e734c2edf4af6f92fe56443317e1408d5f66a1d5065dd9842be20d4768808d8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:17:12Z), 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/TCAJQ2507312.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c177cadbc38af713ae842bb15cfe083ca9af7ebbc2a90e528465847a2d3d82. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAIO2466232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abebde9e86ef093805f4b91433033a770db3cca8810a5fcd76abe9c2509a08e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAIM2485570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691da35690689e6919d58a4644a8e672b876c1f6ddec6ddc450cdf342448181. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCAIL2485272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9f5e400136bf5e1872f9fb6b23055bd57cac33c0980b1cef6340008cf8d7fe. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCAII2482131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc3b20500d9a44f729c93ec7bc7d7f70a4b85a955050cc8b7bb4af2a2a190e5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAJR2588447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06a471e0fafa3a0bdaeba97f869567647b29af8b21a958f3c75f0a0e2ad2586. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCAJQ2588500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1e12ad5a24b4841d38fdccef1878c0d11703a546afde209ea5398503959bbf. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCAJQ2588519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfebf6dbea2a183fe49faa8918aca6b79d6576df390128853df148a8ad798dd4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAJQ2507337.