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 0x4e9f028ac9ca2469d02b3334229fdbbe2ccf5b3cd6b01ddf67b2ffc9c4179d09. Chain 2 (Bitcoin): anchored in block 953795 (2026-06-15T13:44:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dffa1ae5-09a6-42da-8645-1f2c1eb15d26.json and https://artists.proofprofile.net/proofs/artist/dffa1ae5-09a6-42da-8645-1f2c1eb15d26.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 0x4f5b0bd9a3ba4a8f9fe177ecf76ac9d6816f4220647dff53bcb02c4adc10db66. 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/RUA1H2380632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67fd2683c83df988478edecf02782e89b09a586138013bb746d12102ad2766f. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/AEA2L2122486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede3d9728af14615798aea4550bb3f031ac4b9487e58c56c9a4cf7f3d7119469. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA2L2145093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1692492ddda3eadeecb61530123604c9c81879f91bd7a5768c755b04bbcee212. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/AEA2L2178229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6ceec587c7a01fe373e4cf5adb9f2ab39adef447694b1f39f9dbf9e2eaae58. 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/AEA2L2190853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc08898b23dbce5f51f29749d5e35f93b4730531462c4da01a16bd0f898def4e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/AEA2L2190854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cbda61e237fc6b8cc8291816ced42c76c01f2d66d31c18c46cd1f295562ff. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/AEA2L2190855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d029d9f143bc41d791daddbf247eb2c52b086ab360a1e86f379dddc4fd90674. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA2L2190856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e541d290c1ec0f064d76c175b684b4f849178d735830bf05298ebdc7d2a389. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/AEA2L2190857.
No Te Preocupes, Mañana Será Un Lindo Amanecer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f01c8c7166e370dc9b3eec65c14f32aa870389ebb88e6db49ce4f025ded057. 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/AEA2L2190858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c6f9fb45c6b0ad9f4a26e97a9e77540f7e8bdb1c73fb7462505809f6593bfd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AEA2L2190859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79063eef76413113cc3479ca8688508324c4177b7a7a50d3211892dcc5fcc90a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA2L2197764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67417400b664ab1e4f67018d01470145e468a4189f22eb91824dd9634ef2f6e4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AEA2L2197765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e3d972c7d42f5192942c776291f302f93520dec45ac441ad6196b4a7f08f26. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA2L2508050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f8c2b0eb16db6582bfbfe7eca3c258f677785828090610067a60cb4df6979. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA2L2518733.