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 0x96c07c03e4d7d1bfb4e8e0d764a190ff66de661e5d0e83bbf2d62b690e51cd30. 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/deaaaedf-0aa6-40a6-aed6-6dceaff20bf7.json and https://artists.proofprofile.net/proofs/artist/deaaaedf-0aa6-40a6-aed6-6dceaff20bf7.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 0xeec63edcc92d2d67c050d12b704d6baaa2d9e9f06a2b10cebf21a0d1b5c9cd69. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ARG991023285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb1d74abdb9bcbedbbf5e13620ceda2ed56d6705b2d154f222095f3fa73c31b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ARG991023286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9230fcfadb16e3a33e239950d57741160a58bfc5e82c4c35cdecfd8ebe8eea. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ARG991023290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983cb8bb3e5bc32be2d70ce04821fd81979f533de58d8bb2ae94d24e30cfb691. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ARG991023293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c14562cb8d114a8d0fed15153304f19ab1d656af89ecefeee65ef3a9fa8353a. 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/ARG991023298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484ee3b1394e7354a47b263309ce79e0bcb69de24e8d719e80df2c019288a63c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ARG991023302.
La Movida Tropical: Los 100 Mejores Temas Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cfa611de3093f79718d02e043807ce37a922ae081133e5c651922d099bccdc. 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/ARG990901314.
La Movida Tropical: Los 100 Mejores Temas Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d927d59e7eaea1072a4f5273bc3b1682f0127c8c7d09382178b30b567b656b. 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/ARG990901329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881afea1ba40a5025d357f5564517d864d88f9a0e2b4683d578ba233ae8b2b33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991017060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7b1456e864bb4b2e3bb5618f1ce9161d001476d4ed0aac9f56c6ef74a30d31. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARG991010173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba17bd8bdf770e7e852d5aa5e5c55381eaaa6cb0e6f9a49dec86a2ccd26ede3. 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/ARG991021843.