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 0x51ac32caf5648347ca8917d72b45272f176cfb0e1956c8e9f377891ce8427da5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c67a262-8363-4ada-9d69-6373e4b0213e.json and https://artists.proofprofile.net/proofs/artist/5c67a262-8363-4ada-9d69-6373e4b0213e.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 0x869b590536ebb9565abf3104c99aa892e7788041b0629c323f1553be103b3d92. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USJ3V1431092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebd69d39f3f335fb72117ace7a207c3f6c6a7eeaee66d76502ced75c3209083. 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/USJ3V1462544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a73f152adffd12cd1423905bb2ea627b826e9b3cf929ebb6800e48c7e073130. 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/USJ3V1462545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dcbb84467304af77e5c114c10b5bbc25ad91d7405723a57b7243d45a199ce8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USJ3V1462547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95570a77d7857425559ac51e0c7ebff07cf2ce1cfa6d2426a3a49d9672af8d24. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:42:25Z), 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/USJ3V1462548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49736b94f2971e36d0bdc452667a1ff18f673c1927848dbc7fb0ed3bd1b3032. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:53Z), 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/USJ3V1462555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6eb7f07f1dd22a57efb0906b166c87c0a807a77734e2021bbeab7b05edb6a9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USJ3V1462556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bea66cace6049670cdcf0a3d3854082217a9dcddd765d107e8e4255768dd93. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USJ3V1462557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b51edce633542456dc8b1817a535375868f07c8742fb45ebde44193a22ffad. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USJ3V1462559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55049f9fa0d45c99232d503f5bde0a10d1b71fd11342834679e826f958950f1c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USJ3V1478075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f20666d65547d18a4b6c6fd7042531538b406ac640e5a09ee4ef3ac590c69d4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USJ3V1478088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670d2cf8fc37f9e8c1562cae2d08ab2894670225a384b91ac5fab65cae1eb6a. 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/USJ3V1493795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cae2c9ac2a23012970407959816ac8c431b2e51e915f9d858af64ea8e5f47f. 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/USJ3V1493790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb05cd9c747c75dc8cc4941484071fee125e260294d4a8b06082463a35fc322b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:17:01Z), 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/GBENT1664706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23140af6175f05b32b7f687fef04c1625f79fa4543c50a8ee4c86d3de30f81a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBENT1664708.
Gentle Bird Sounds for Babies Deep Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e95057183dfb2202eb1f984d48563684b4b363738d733b395d34b9340383d0. 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/QZN882076320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1749724c66efdff3e2545b4d625e02d64cc70c71e7b087837f213153724c7f46. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZN882076327.
Birds in the Nature for Babies Deep Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd7237b7f18a0b0d4f4a2c1cc07d42742b30fad68b0ca346c5045b95589770. 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/NL3WF2009634.
Calm Bird Sounds Background Sound while Working Studying and Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a54c2290a8de9c5ec321a059e7213b4a978a0c2c96cd55c41801c351397a1c. 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/NL3WF2009650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c9a17f0e31b90bf7b86873da7f2395c07fca09d0e94577edac9f75f6acc7f. 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/NL3WF2009648.
Morning Birds Background Sound while Working Studying and Concentration
Relaxing Sunny Day with Birds for Babies Deep Sleep
Relaxing Bird Songs Background Sound while Working Studying and Concentration
Relaxing Sunny Day with Birds Relaxing Music
Gentle Bird Sounds Background Sound while Working Studying and Concentration
Bird Background Sound while Working Studying and Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660830f5268aa1ea20143f3a428ec4ee73aed41fafffdbc0a4dd6c1820662b1c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:19:16Z), 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/DEUE12415929.