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 0xd1db1b5f93538c7fc7598c2b7db3a0e8640bd82b4600b96c284afb417cb8f7a1. 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/8f369d0c-d542-46a4-bd4b-2a4c181cc6ac.json and https://artists.proofprofile.net/proofs/artist/8f369d0c-d542-46a4-bd4b-2a4c181cc6ac.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 0xfbb3f570c55b9900f1aaaaa5299787bb6041788a5067ae2ad35dfb5da204ea1c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM2PV1867730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca3b64bfeadafeff6b7161fc79587bca6a02bb4e2ee5c5d843afedd382e0573. 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/QZDA71975808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0a04b8fdce23caec836577933a4b521d4bc03e7a0e74c71fd1af6aae4292b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:58:49Z), 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/QZFYW1993423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb06e05c7abde60fb15eac4ee51d56c2f7f115a756d2717a340a5ba4533b5a7. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZNWR2174249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab624dff7cdd0c2e8f0ab72c623842646e917efd680a979a350ed6b67c713fe9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES72233383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7577a735e1d19ea558c78354165282bf0bb3f8924c5aa777e23111dda99217f6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USA2P2317717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5a53b6e8bdb7ea069eee5b0c792536a16f16c69d0e4ed5828f3b0d38ee738e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USA2P2416689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832d66dcce7c82d8ed4239e539c4e48ca3b30a91e49cd14e5b8c940630a72e66. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USA2P2416690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6000b1123f00308c5e221ca2d610d5e985f5be115158d0e0f06298473c01c72. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USA2P2416691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd217a3a33306aacd2a59a7e97329ee154245bc76d028033ed6dc70ec72272e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USA2P2340558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11cc358672b4318df002cdf8db4dd7794800fc29c8df00aa67a8e2340e13e49. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USA2P2416692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a2245d29944b5cae169ab93ff36a609fcce7fb67e0a23af442c724b6465d39. 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/USA2P2403956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f451c580cf9bc793ea83d349f85742e1bde615787fdfa8132a0a98307fc9429. 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/USA2P2416693.
Ano Ang Kasunod Ng Paalam (Prelude to Paalam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe5da003015a8c3e7d9d397711c36e6553e2cc7073238ea682e3b759680bf6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2461136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908bcb6247eadaafd502e7095cf3a4d450ac41232a22595cb9cd279b2117190. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USA2P2514884.