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 0xfd89e80d0cc04f74aaa688da989ca51b9b2094ee34fc4ba7c8ecda4abf42c6e6. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5021197f-10f1-40e7-8f57-97d0cb07a008.json and https://artists.proofprofile.net/proofs/artist/5021197f-10f1-40e7-8f57-97d0cb07a008.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 0xb28a724a758635e5f3821fb4cf8045a07c44d81804c5bf96545355467dd3d96a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6DC1906396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36ffc33d3662b0f9cec3380f9a60ee0602f2c2bc3dd76f3e7fbf7d6ec58e93. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6DC1906397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19abbd0d052877b8ee443b24a6ebca925d6de3ef4697737ee71cf20a8aad8ef0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QM6DC1906402.
Pasado Presente Y Futuro Vol. 2 Presente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688bce9b3187159fdab234c918cb90cdf9af3d311bb17cad3e05861534cb358d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6DC1906415.
Pasado, Presente Y Futuro, Vol. 2 Presente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f240b71470a1c11073c0a49dd5376f5495d522a55cbe45020d69012e63f23aa. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM6DC2087523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c3d65baab81acd7637db81150b7e888d0ea684a1aac6ff34ef9572862bd8f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6DC2087529.
Durango Durango (En Vivo Power Duranguense)
Caminito de Allende (En Vivo Power Duranguense)
Las Dos Las Queria Pa´Mi (En Vivo Power Duranguense)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832c007b73436edb409e694e0c083670cee31d0d13f1d85feedaa352fd0456c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNFJ2204745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc10ff8595432a6d97be0f9e7f7dbe4a11ec25154af6179922f4856d864de069. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNFJ2204754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a7c626ada2055eddfe5d3fdf6025c652c4d88932dc0e636c8c638fd76bd871. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNFJ2204743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e03257bbbeacfd10869082727d0daf0a88c1bbe3e75c12daf5a6acaa2aee954. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZNFJ2204744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832c007b73436edb409e694e0c083670cee31d0d13f1d85feedaa352fd0456c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNFJ2204745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90d90abd7824430cf49948153107657de8c48317e618c427016543f833e1bf1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNFJ2204753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc10ff8595432a6d97be0f9e7f7dbe4a11ec25154af6179922f4856d864de069. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNFJ2204754.