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 0xbfbffadb5a63b55df9dee2848f1658b5a6a454b2119e77bd9eef12c636767445. 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/b24968ca-35b3-4777-8b87-58457945d395.json and https://artists.proofprofile.net/proofs/artist/b24968ca-35b3-4777-8b87-58457945d395.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 0xbdd9302985c4ff332866506928b9a64bed957c359f707879e46b9bb2018837fd. 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/CAWK52521420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae2a3f64369dd1afb358abe18ec5136c63a03692ecfdd6cda4cd574095a37b. 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/CAWK52521423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165febf50f60d9b3e5824606bcb9e2c595362dd395a763d5b9441355d81e1fb4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CAWK52521421.
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 0x428231a81c2e4cc872e995b7d675be51e678f6fb2df5829879dc655bb25fc617. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/CAWK52521422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a67234bb36ebd7030a180f6a17a9aa9bf5fada4ec52b071f08351d7369a312. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CAWK52521424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc4c3db06c4360c492248a2fa175f54213284fc77c146fc11bb99936875d5ad. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CAWK52521425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf39af65d5ed39a1971d3e4e8de764ca1f7c7c443dc6666237b859bc600be261. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CAWK52521426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27ead747bd5e1166038e98c767ae529f4e0b825f87e65a0938ee6fe668f3c4c. 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/CAWK52521427.
Sleep Therapy with Rain and Distant Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6266840e92b1e38b924f618741e4fd1396fcf9309d5d9d5b6f335057d8283. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAWK52502821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf853c8143b4365f89d5cca1cd6f841c825fba1cafbe3805ca5474fbfc0474. 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/CAWK52502822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d840e89d09ebe06382f6cd767e0cc3675239f5126fd02aee0e2aebe2229fcc. 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/CAWK52502823.
Intense Rain and Thunderstorm Healing Ambience
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04495c4edfb2d83c9d9f2694c592d3d3cdbc314647a40478866a89214e75d9. 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/CAWK52502825.
Thunder and Heavy Rainfall for Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9116d45639bae5c88793b149977747e69c5fea80c5f9c9db64b853f8a6af8241. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:40:36Z), 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/CAWK52502826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7c1595c35267da89ae656677f0548dca43019e7d32972043cb92973c09940. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CAWK52502827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8e5d4b4e28feaf06f04c050f51fa285346c02bbfca0e799ec00a4ed58d02c3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAWK52502829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb3570de30351f476951efc387b58951bcdcd2d58ab02ad7ce6b9fe754f4ee2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:59Z), 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/CAWK52502824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb22e683560d03c4a17d64d1618dc52cf921f364c3ed2b7c838de7009b69d1. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:38Z), 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/CAWK52502830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24cf6a241a19e73c25cbb0043dc97e2c9c824d9c66ee41cddee91247c348703. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/CAWK52502828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4398c74d7663531f517749f17a6d4c0c9ddc9d5d0c12261e4da7b7fc6547f0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWDE2460013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb4b4ae6400b2d8d0b9dfe3aa6d26c52e907b3bfc38285f88516ba4cfa142ec. 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/QZWDE2460038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ddc64bdd1fbd8416c14ec58a1ed0f70ce9984268dc78b445f7b6d9ea9a5838. 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/QZWDE2459987.