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 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 0xbae201eba4f0b8bf147e86bba6a1e0b062b9137cf3805a20ccf4c427a84dc617. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38566a03-a43e-4607-8b99-61b243a22382.json and https://artists.proofprofile.net/proofs/artist/38566a03-a43e-4607-8b99-61b243a22382.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sober Sleeping Babies Soft Noises Sounds
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 0xae71ddef4dfd622370e29c23ec5218914b989954789e52cdb1e2238c2498f176. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/PLS102022206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f241f7fc3dc07aafb7ef7e8c6648a8a809aa6593c0a5cd6397b5b1a5d42a490. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/PLS102022207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12446342c549fc339d9265990d3113275ee3b428afe65fc57c6b5bde2d1abfc5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLS102022208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d73dba6ed8838182784a26f3dc22a99c9584b4d3c517e1de4a91ba83fec42. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLS102022209.
Rest and Relax Deep Sleep Noises for Kids
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b15851a50578750309003e0c5d4f1b5732de6a3954f03fca72ca4bf374b72. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/PLS102022210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9163bcc1a9ab4821095c2897ebd3ca7ca7a23f00d0aaed8ddc911d05af159b3a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLS102022216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a470e1c23d8bdae70ff185f4cd8442fac2f9f4f31c2c448ab911fa5c1a6de. 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/PLS102022217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe02620a8147ddb5788b067c1dfa248c092b9a6ba69dea32e96ee7802c86708f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/PLS102022218.
Babies Calm and Deep Sleep Soothing Sough
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84745cf19b4439fec76c55ee329a9054bc4b40cec4ef80a514299645fd998f92. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PLS102022219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53aa9eb07d43a0c76d5b270356f14c63d656a202ff6e9db0e338b090b2bb6b5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PLS102022220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5e2c97dfa01853bf010d657f74c8eb5c448c22f17ef1663e1ab9f3012a38e1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLS102022256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531003d3b6aede602b4ef1e6322cccd0c0ac9a8adfa4c102f5921425c3ade1d9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/PLS102022257.
Children Relief Before Sleeping Soft Noise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b3e8ecf7ba105ecc3abd5f2b4676a8b110012b7629c17f10e188d50e53c2e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/PLS102022258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ec5c163420b157a9926e0f4aca1b60d6d43e55e725736bb7092c0810cd147a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/PLS102022259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224076cab3b1a19a43facea160c523ab27b3bc4a10676b4fd2e1d0b82ed8bbae. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLS102022260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf83d1d8a9e2ac8993a1f1a3d3503eb56d68ba7a15dc04c077fdd6c8cdce8a2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PLS102022236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12931b55b044da5637a0e4e073a6745f9a50a6bda5d79b0a44bb3ec817c80d29. 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/PLS102022237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7361a9a150f17d48aa0b9220a0784b8ff1fc2794966d291fd00ae3d61706adc. 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/PLS102022238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ceeb5a1fec1127c4f274211b8af2cd036b863f6bf26f14f9a2e39e1257765. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/PLS102022239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd5e9a8f522633d3a3601db55f9e888e1eea910dd762c2eb47887bdba611f14. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/PLS102022240.