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 0xebc8a9f97b589d9eec55c116eb81ce625cce4b31ee398ea75aec1a684eb53e13. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99733ec1-a42d-4f23-8a53-2f1692535835.json and https://artists.proofprofile.net/proofs/artist/99733ec1-a42d-4f23-8a53-2f1692535835.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 0x4a644de2daa51844d36052e1496fc50eb7baa537d0cb91285446a3a339403045. 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/UKU932382114.
Cuando Vengan a Buscarme - Cuervo Cuervo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0977f619b2b4200bbe4cf16c1f85798b0599a843fa14f6ef2469ecfeb0f22da4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UKU932382115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8e1b05bd90890e427cb3c6f1ea0fef9844846a341b6989064813363174616. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/UKU932382116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd99a3cc65cec3c93429aa76911a48021709406b0182bf3690b5bb338f01fcb. 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/UKU932382117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8258b17278e568801287f70a46e933498e1c76ecddc5ca6bc278bb4bfd1c9d24. 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/UKU932382118.
Árbol De Esperanza - Silvio Astier Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36faf14a1c23c56cf32ae9c75d65f34c3afe8be83d05832766fb2f8dc7fc891b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKU932382119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c09ab7a783eafde6ecb3aff82682ef394401633068893149a0b6b5ec331cd. 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/UKU932382120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfdb903581889f3862c82ae8b8f373f61f1b6e8aff9ce9320b8406dd6677183. 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/UKU932382121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd9869d546f36186d00978958454f95525d3d10e34a1fdfabb311d78a0f568a. 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/UKU932382122.
Santa Marta Del Cañar - Mutul Mayan Vision
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a47a2c2981a8749a0627e3dacff03c2d186ef36d78966f3fdc47b5cd8bf0a50. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/UKU932382123.
Santa Marta Del Cañar (Mutul Mayan Vision)
Árbol De Esperanza (Silvio Astier Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36faf14a1c23c56cf32ae9c75d65f34c3afe8be83d05832766fb2f8dc7fc891b. 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/UKU932382119.
Cuando Vengan a Buscarme (Martín Omelka Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510feef9f634135c9482f31dfceeaaef3064b518a5351d1a6f0f26855be6b402. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/ARPAE2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23f6c9b7ae59409e1cf6483f390e8b5456733f216b6c294d9005e86e9355bf2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ARPAE2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbffb2d547fe7da7f1120b574df5ad4e77ed560b73688a494f9391c73d1d513. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ARPAE2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d585362eed820097f77f516d89620f73c200b2ba1fb5035525535eecc94034. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTV32455764.