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 0xf425ee3fe490f15cd8549e79f241582eb8547b0cf0417eaadbf4c30e8058698b. 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/905b0b6e-b4c5-4f70-abbe-d52dee37cc5b.json and https://artists.proofprofile.net/proofs/artist/905b0b6e-b4c5-4f70-abbe-d52dee37cc5b.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 0xc97701cd1c10570557cfc110e621c3587209d82b6d0ab85618db0e0d7bf7886a. 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/AEA2L2303271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9675c9dfe1f374c6c37461b7270823eff7377d4dd4b4af3ae01a7fb422e8dfb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/RUA1H2401204.
Pentagram in My Room Full of Human Vices
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90afc1fdd15fb355aa543ddd9a96a9131043b71cc0cb2b38f1110a4b762f5fc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:50:11Z), 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/RUA1H2401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac614449391a17999f0e8d50876ac2db96ffe01f29898412aa3304b92ecac1c2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:03Z), 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/RUA1H2401210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9675c9dfe1f374c6c37461b7270823eff7377d4dd4b4af3ae01a7fb422e8dfb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:23Z), 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/RUA1H2401204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94af2e7786ec112b338f8fa61c6773e26cec682a03c2d0d3c2dc23881b39c90. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AEA2M2460148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abbdfb625e08e0ae0a2a9f66f6705db1e15d80b5b52c5f15bb3b565be2425b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AEA2M2460150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e518010da5ed67e98ff19be6720753eba603efd8b9ac714965ee834e78570. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA2M2460151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe02a05e98491179a29f262b9659c22e358bfa8c3f247a28b03c3644eee03bd2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA2M2460152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8e1e4529c534374ed7010e44451610818201b88a9a60afafc3194203f080b. 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/AEA2M2460153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9d18c23ac238bb0fdbb4df732ed5db8cbcd6388a43a89e78926995fa4e30b6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:08Z), 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/AEA2M2460155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd967dcf518dc588a9bafb6842454fa424de8b65f0e5ef6930518e8eabaf66d2e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA2M2460156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca9a2d67a2129501b1ea00bfd12d555eb4f4b41af3ad624f508885b26339347. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA2M2460157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9215fe520fba0f2d9fc7547617bf9b289a58f50486a6aaf47ccae9b5b01595. 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/AEA2W2568123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1877b2fa5247117cb19f2b0475f5449b6a3a28e964b29a7a79da6a55401ad5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA2W2568124.
Before a Forest Fire/The Last Song of Sleepy Owl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144efc905e89c352b102617bd89bc8bcee1ebd5023234c38e899d3b6d81a6f3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:56Z), 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/AEA2W2568125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e5b744513d007a08126d935ad215906432a0a4257c77b090f448877a5cb765. 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/AEA2W2568126.
Cat in the Bag, and the Bag's in the River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ce724482743b55316f766accd7f00fd346441e462fe9351bb6a04e1c188840. 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/AEA2W2568128.