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 0x76ae31a59856d0d21197bd9c835ec4ba884be8f2d65da6130f20c0ce604f90d5. 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/028c3c93-cef8-40f8-9067-1826ade4c659.json and https://artists.proofprofile.net/proofs/artist/028c3c93-cef8-40f8-9067-1826ade4c659.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ritmos De Guardería: Hora De Dormir Al Bebé
Música Para Dormir Al Bebé: Susurros De Nana
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 0x6716953d1b95475eab75ca4b099708a9b91aaa16ffc61467f0d124ff704a4e62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVU51786136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74826a58d3dc6d3b09125629dec0e0063187b646c3be9021ac93734a7f5b5a9. 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/DEVU51786137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264d099e63bec03d0fc9341b2079bbd5806b1b34c5174401f61dd6440c87d104. 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/DEVU51786139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9e2edbadf838b6e881a6b01e351052f6e8bfb39deb4a54c8b473528830f508. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVU51786140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb945682f107940c965ee986357c4dda4c98ed0b25c4eb137704e921884d1c7c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVU51786141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e369418e32279bbade9188018883a80ec4f70b70da805ffea40404ebefe776. 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/DEVU51786143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5daeb4bd8675e5a3f155d761ad79e671c27b94544911a7eb3c0f51fe35f5211. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVU51786144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28faf05c041b70aecd4c2f9c95189258ea2e8e581beeb0bf58135db57ba477f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVU51786147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae495e7a964f09229fa167d9acd7878c89d65e17fd47e1b55d10fbb5bfbcd83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVU51786148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb0a9478f95162843f37e3213865c9245a52b319d960fd4d3edf297c1b33cd4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVU51786149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd68ff699e4fa4a89cbb5c2996d563b3704568058bc4facf5619ac356639b673. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEVU51786150.
Sonido del teclado (Escribiendo en la computadora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311d53d397c896350ec842fe80ecaf8290f7560896bf351ef44a0c6b32074c5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVU51786151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc6c6a203dc0b0877fb9775559e66729d07a87dffd0a314cc54f9cfd89a23c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVU51786152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094e38b5e9b9e84e2bbcf876db4d640c2f4319121707119a13254670f9e2639. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEVU51786154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de0bc6d4beecb6892916cbf4003c0eba0e9ac77378cff2ec25b1fa85af58a25. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEVU51786155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad565a9199a7a40e88010e6ba13c68b6b6112c34e2a81ccc6a256c217a2c95d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEVU51786138.
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 0xeaccdc7cf18cfc2aa3c83707348854b3868831c431470c6b8148b3f1a3fb8d5b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEVU51786145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa88f976e2951a572f1d6fd64eb222a6b8a0b7fc14e2557f33b4db8ea1053b88. 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/DEVU51786153.