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 0x7e8f10594bf035c5f8894cb14d5e0f06d098fa8b1ad2e9a85ec69d80f5ad61d7. 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/282b3fda-d576-4fa8-a2b3-5745d725c90b.json and https://artists.proofprofile.net/proofs/artist/282b3fda-d576-4fa8-a2b3-5745d725c90b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xbfe7e45395fa2a6f5e85963e6d636f516247b123361cb0bfa33bb05b64d70cae. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2244946 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3446b058dfd9811f7c856978d9d5557e5badb32f565f835be60705990c6875d6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2247650 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c00862164f9849c5d28864eb2b7da43980390dce2ed14be23d0fa29ab2b95b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2272627 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9415331c3174b9c3ec7a2d8099641987a2c4082ef3a80d539897b1db007d29. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2295277 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dcc04940402b0ab65c21d725c7a79bcdd7b4dc77f7249c32285909e07cf40d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2288593 — a six-check JSON result.
Som do Útero da Mãe com as Batidas do Coração
Som de Vento no Topo da Montanha para Relaxar e Dormir
Som do Útero da Mãe com as Batidas do Coração, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c885c4a65db26b70ddf8b0656e8b074cefb146ebc74cf5feb718d8be0216002. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2285765 — a six-check JSON result.
Som do Útero da Mãe com as Batidas do Coração, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6842e2d531dd3004f2b19cde00df4c46a066a7e8d9259729481877bb538f4c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2203160 — a six-check JSON result.
Som do Útero da Mãe com as Batidas do Coração, Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3cedbb748937890de3b258144d9f65233ddfe11c0845c09cded98bbbded160. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2289537 — a six-check JSON result.
Som do Útero da Mãe com as Batidas do Coração, Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae217c38a777e576fc7a271ad094e876d74f0fbeed514ed617e30dc450ed29. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2227642 — a six-check JSON result.
Som do Útero da Mãe com as Batidas do Coração, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f164753478deca412bd0478a58b06aeeacfcbd3c08c7f9fb9b2fb4c40400f7f. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2281154 — a six-check JSON result.
Som do Espaço sideral para Dormir, Estudar, Meditar e Relaxar
Som do Espaço sideral para Dormir, Estudar, Meditar e Relaxar, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3414a80c8a64db8fd66519a230767515365a3bd7b382906eebc7a1dc4764b3fc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2283803 — a six-check JSON result.
Som do Espaço sideral para Dormir, Estudar, Meditar e Relaxar, Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed5a01bc7292f7288026005710985b4757078026c9b61e4906ccf567db0a045. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2281160 — a six-check JSON result.
Som de Chuva e Trovoadas - Para Dormir e Relaxar
432Hz Relaxamento Acalmar a Mente e Relaxar - Música Relaxante e Sons da Natureza para Ansiedade
432Hz Relaxamento Acalmar a Mente e Relaxar - Música Relaxante e Sons da Natureza para Ansiedade , Pt. 01
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93721545be1a7519ba5b1f8cf75985cdda1d4742ed926b8c96fa5c79b5d39475. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2207749 — a six-check JSON result.
Tráfego em Cidade - Som de Carros - Acalmar, Relaxar e Dormir
Tráfego em Cidade - Som de Carros - Acalmar, Relaxar e Dormir, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9404847f2bb9ea39bb15246625044911d93b8569988a87226f389124b3259a07. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2209610 — a six-check JSON result.
Sleepin with the nature - SOM DE CHUVA FORTE, VENTO E TROVÃO
528Hz Relaxamento Acalmar a Mente e Relaxar - Música Relaxante e Sons da Natureza para Ansiedade
528Hz Calming Mind and Relaxation - Relaxing Music for Anxiety