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 0x867918efa19199f4809bb6738548243af5757bb22b0d2df92e11246c3770b0b1. 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/f9ee3240-3685-4ebe-aab4-86b51999492d.json and https://artists.proofprofile.net/proofs/artist/f9ee3240-3685-4ebe-aab4-86b51999492d.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 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 0x5298be53e2c2c0c57079721c9a6c31f9081de1f84bd519b90589a59418e8cb47. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NL6VJ2226047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb7985107fc6839005bdfba0edfa88a983186f1bff28a97688d47e166e2be51. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NL6VJ2402767.
Caminando En El Bosque (Sonidos De La Naturaleza)
Música Relajante Para El Bebé Que Duerme (Sonidos De La Naturaleza)
Los beneficios de escuchar música clásica para niños pequeños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b99824f66430c296c3c228971e00207d35a2d08674fd19f720adb7cc54b381. 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/NLGM12122768.
Sonidos De La Naturaleza Del Sueño Del Bebé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15639e671337b1a90f7380090cc4e4732ac3d61e1cef722f0a60936c106a52b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLGM12136368.
Canciones De Cuna Y Sonidos De La Naturaleza (Piano)
Música Relajante Con Sonidos De La Naturaleza (Piano)
Música De Piano Relajante Para Bebés Con Sonidos De La Naturaleza
Canción De Cuna Y Sonidos Relajantes De La Naturaleza (Piano)
Classical Kids: Música Ligera Y Hermosa Para Niños (Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ebd27d35c66dcb5de5a24670c81f6b92b0c1fac5b925b8a7e17fad02507194. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6112b7d709742a0a87fe6929a2c8b6f4704bca76fcf9596300b2e36020cfb77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26686fad9a903693db1e59a8473e6b2d20a6ad08e31b1c4de9846b30887bd644. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab591f847115cbc11a87b5ef969d3cb66d57a2ca9a5d91253b40cc7b860223d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe882c3dacca530cdd8d47a2310d6266e7f20f387136b5b3299c5881f2d8b1f6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9105884adac29962000b0dbbcac108a4155dc7a8d16d0f50bc6c6ab544301a82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d18e32a6111e7ae997f960fa55da9e5078adb57ceb60888dfaaecc309c7948. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba02a2f7a4adbe8c1d3af0da14c6333155bdad9583318e211db7bc863aea0b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLGM11907887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46065f4f3feb4d3a26015b90141cf8a8e8a615e78f143eeebc719846e7338b9a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NL6VJ2453668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe834e87fdf884bf07ee98752ac09c95af895333dc11bf9bfbd009c8bb71c9419. 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/NL6VJ2453669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22af2452a1bf742549b534efba81021d90099dc570c10ab418c6fb8c6197143a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL6VJ2453670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de52c8be9d197446e7b0ec8d957f66e63f2af8db5bf995ff284c1f481c3a50. 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/NL6VJ2453671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756fe5ba99d6673e15837ad0f44cea607098bcc08e215a9b7a3c4cf2a2771b12. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NL6VJ2453675.
Canzoni fantastiche per far dormire i bambini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d8d72f9f7a32c56e8aafbb404be930434133867792e45b39086cc6ced2e79e. 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/NL6VJ2453678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a09aa57becf7024ccf2898cc91c538dfdf73487a4f286a08afcbce6d1c79f76. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NL6VJ2453679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeef9a097d0a283352376f4c57b649bb4a74f1b843a89f09576e9ac33626d220. 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/NL6VJ2453680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb587e224e736d948f9f68f08623a67112330f8af0f5db22c5a9053d590b1b8. 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/NL6VJ2453681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064c4550647ebd398fb98f47aa8066ec21d46745ca1c6650e02e4f84fcaf5c45. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NL6VJ2453682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8348263a97125e959aee963f1dc9773395a490037ba63261704c7c71e7796f. 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/NL6VJ2453683.
Kinderszenen op. 15 no.1 Von Fremden Ländern und Menschen.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf58446a3396d576b30724bfcb8474dfd2cbbe7d9246101e9af7df9ef52e9c5. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NL6VJ2453684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059dedc74c6ecdba42494904da461ef8348a50f94a6fb28cc31e933081697d54. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/NL6VJ2402785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423d01531afdb334f7071d252a8ee6c7003f58e697c3694e84e7448247c9b5c. 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/NL6VJ2402786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c45d78fa06f1666393035cd36090f69b5862d2fe2cb0abebde15e7fe3b160f. 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/NL6VJ2402787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e0fb7ce78566191b4b9520c8ffd42b4fe156dd67213246d8bf2c057588a870. 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/NL6VJ2402788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4cc89303af744a743c334959e833bd649d669ccdf4e0eaa97f6ea9ca855dea. 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/NL6VJ2402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19b0ddeb06816bd25ec6a9968bfffb046fe6d97c2aeee682fda8137cb5cb6c4. 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/NL6VJ2402790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b04f460a3557cd9806da3d0973b87adffcc8630e7cfbc5dc4d2c7f2229c38. 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/NL6VJ2402791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe401a8096e4a4b1e43040128e67d6090c69275d128b8ca3d2ef955a81a5224f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NL6VJ2402793.