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 0x4364a2ab1d0337f292ab620f430dd8bbd2192f7a163b4489201a774b013f1217. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e8a8d9-c4f8-462c-bce4-57dce276fcb7.json and https://artists.proofprofile.net/proofs/artist/12e8a8d9-c4f8-462c-bce4-57dce276fcb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hondenmuziek - Kalmerende melodieën voor puppy's, diepe ontspanning, pianomuziek, antistressliedjes, slaaptherapie
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 0xb0cfa060f33fa0c08842f149706b8622a8c3f77f8554521f0d7badfc079d41f8. 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/PL0652011276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f33e476d2adc64c3e8b023a9c61934fff3b48122ca52477f4a44ab450faeea. 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/PL0652011277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0edae3ababc869ba97b9678d8d2a13dfd11d0c72ed8027c8fa38eee2642c9. 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/PL0652011278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c2cb4af2752d296f041df01f45b9d891049ac59f01d55b53699e657db06e1f. 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/PL0652011279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5c41f02962b978446e0c74eac56c35e24da4f101df412b5c20c3f4f22f330. 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/PL0652011281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c421cd6f9a70738c8077b0ea3762b6bfe17c16b9d2ca31f9321e371d74744f. 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/DEUE22386997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b1f7fa7d7dc3d9b1ffde6d556ba260303375b060c7fb0944257495af0a863e. 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/DEUE22386998.
White Noise Arctica - Loopable with No Fade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa528a416d31a9bb9ba3f03c26c93e3d2ba2a74c352a03e65b06ead13af006. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEUE22386999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46df9f70f0c719286ea9eeb32b952014eef26f0bd17847a6aa1fe7ebc23c5dea. 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/DEUE22387001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e5d7134851128e7d3b9d75df0e54ae12169d1352338111f410b35b8a1cbce. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEUE22387004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47dc68d6fad4dcbe2ad6d73c6af856a1400fda0c4ede380f22a79f9f95a429b. 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/DEUE22387006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60c91b91f76ff4f8c55686daaadaba38168f925143c65b75ba17c470b0d65a6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEUE22387000.
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
White Noise Water Bubbles - Loopable with No Fade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd94326e55584a1f6dee85bde69e87a23a1e57571537a9ad89e6978e4a28033. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEUE22387002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded101ed85207f704cae9e4ba81fc327f22bb47575d5963833792e319eab206. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEUE22387003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c8e05122fb103ba29c4037ae17de745e1c38809964cacb6f0b7464d3a861a. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEUE22387005.