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 0x4603fdb38f78ee9505d56b30ea930a5da666f686618649bf1a3eeefa42b92d81. 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/9aad7779-bb80-420b-b7cf-22111c84467c.json and https://artists.proofprofile.net/proofs/artist/9aad7779-bb80-420b-b7cf-22111c84467c.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 0x450daf02915bdc4f0f03afbc647957a63e1551f406b35b8489b8fd966e803604. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGP2234981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee84e1415b1685192dc72185d1e05cc2ee5359b8d2325d70c423d857b42f994. 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/QZGLS2369286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d58635a7decad456d501ab078b65958624bf2dd304e76d8475f009e2f3015. 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/MXF152100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe05bf2381136126ec4bb9e067a506f4cd5f4f828fde451022625dd00d51f5c. 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/MXF152100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ae7ca7ce3957ad94dd2d851f09f2731d54653b244e3e132019fbb7ce50ab9. 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/MXF152100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66778221492d30d461bc9cf1dc5a1479eac28149e0c7bbf846f77ce0b015c8. 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/MXF152100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d01c3f8b1c325f302d4582275abf572e140065a37365fa66cc49c1bcb9961. 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/MXF152100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36ae9f4827f0da5b4cfbb7735bbf0e99ee91e2bac3d1fdcff466c23b126e35b. 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/QZMZ92007259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55f2826c8842ea9426115e41feba46a4b0500973977aa80589e543e4c247ef. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MXF152200452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b6b91fdfbf473cf946dcc514df5548bf23af12c64db37e3a3e3f50db7e8d5. 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/MXF152200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55f2826c8842ea9426115e41feba46a4b0500973977aa80589e543e4c247ef. 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/MXF152200452.
Sigo Esperando Que Vuelvas (feat. Los Golpes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b6b91fdfbf473cf946dcc514df5548bf23af12c64db37e3a3e3f50db7e8d5. 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/MXF152200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe05bf2381136126ec4bb9e067a506f4cd5f4f828fde451022625dd00d51f5c. 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/MXF152100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66778221492d30d461bc9cf1dc5a1479eac28149e0c7bbf846f77ce0b015c8. 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/MXF152100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4df0af536d067c68f5a077eeaea02528d5e0ba406d3d9079ea562bebdc6ea1. 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/QZGLM2011021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05888a702233c8d9ff066673aad49b849bd44861944d3bc5e26f0573ccc0a50c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCAGF2264540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d996f14e992787293c09c62d5a3cc045b4c3b6eff70a15b542aad4a70883be. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAGE2226119.