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 0x6124e3fef0ebda08b495ed2bbc4f5677c31dbddf035262834088013e66034ccf. 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/aa16ac31-238c-4501-bfef-9e19ddb61b27.json and https://artists.proofprofile.net/proofs/artist/aa16ac31-238c-4501-bfef-9e19ddb61b27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic Bedtime Lullabies Tranquil Piano
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 0x15b9a396248e8ef90dfcfedc035a91588fbda7175a797d09921068795edfef41. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFS2402297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae20138bfb5780c410a4782d1337b225c1b9f6dce93c2054398f44082611d2d. 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/QZWFS2402298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80271ccedb6b2cdc0d7b6a63c8ffe5521535677428cafaed25dec2a224f5e450. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFS2402299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a24772f6076abb3982d91b1f3807b5833a13bdd5cf288cf17099312c9e0cad9. 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/QZWFS2402300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3d819973799536f57f9fb43132eaa273f89da3e4d2cf5ede85f456307230fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFS2402302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b877675025f46c10c2af2c5d6e161d8935bbd4432276e97e60168363cd661a9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZWFS2402301.
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 0x962b756293c72852941884541b6feb94e70b5b2cf4fb3c0ed8651990b101c36d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZWFS2402303.
Sleepy Baby Dreamland: Tranquil Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca653913a7f24e129ff077dec3ba67b7ecf5ea8e5924ffd79018f93358ec9861. 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/QZTB62429718.
Restful Slumber: Calm Melodies for Little Ones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08698ef14785f393151dd323fcd76bda458585c27649e1c9234bc0a159640a8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZTB62429722.
Sleepy Baby Dreamland: Rainy Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35e010bd93427540ba81041a828a3d25d8f0ff35909a69a4049302eb9c8af2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB32444870.
Baby Sleep Oasis: Peaceful Night Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec04976a0f6edce87e7f648a9c782a4d0ec676ae213dd394e2064df09736028. 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/QZTB32444872.
Cradle Dreams: Gentle Sleep Sounds for Infants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b65f0d5367293229884caf2708511bd3a0dd5543c28c7fbb940a06f56fa912. 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/QZTB32444871.
Lullaby Haven: Tranquil Tunes for Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437efba95ac50f66c17075f707c6e428c4546b46543b916229544c985e74ddf9. 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/QZTB32444873.
Dreamy Nights: Gentle Sleep Music for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e0ce827a6cb5ace91ccb089808ad7f6c898147d346eded743b60f3acce7999. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZTB32444876.
Nighttime Bliss: Soft Sleep Music for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee773c5e55d910610d51379d5e110ddba71c19e38402c301b8ae494c2f4b061. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZTB32444877.
Dreamland Lullabies: Soothing Sleep for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02f4efd2452b17d16b4ec66058d3a6f9475666c2119513b0384b031aa8fec7f. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QZWFR2415233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4750b9c1ab708bd6afd63b6f450f6f74ebdd2b3eda683b3d42b1f4fab1506dd4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFR2415234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c6b523f1092842fb4453e62dcad00cc94235a752372804b9b707ee5d5933b0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZWFR2415232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3518a549ac641c152c1228fd0505faf84d74c107e8339cd834627553202b0f3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZWFR2415236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97058e1faaa130b0332db790e47a00cc18ceb29c0027cc679cbd9b2dc5cdb37. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFH2483770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa13e09ffa795a535c370f0c2c7515c48c317ea26adb89b424b4b2a8915534f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFH2483773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c1e5a73f771382a49ef70e6a70736bec615851abe2fba596041a22bbc2563c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZWFH2483772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b77ccf61b02ef243cc7c5635b084f8b33c873641051c4f63a5ea4c6e1306cd. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZWFH2483771.
Bedtime Lullabies: Tranquil Nights for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc172119cb848c2d64dea55a8d5b7fdc1e79b0ec7e41f6233d2efee54df228bda. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB82409481.
Sleepy Lullabies: Tranquil Nights for Babies
Dreamy Lullabies: Tranquil Nights for Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90450e3a75c29786c2816468e5ff5849ceee714d2ebd75dd1ed8205dcf9e88d3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB32444973.