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 0x38292d15015a1e167b1d7054fb6b6e36939c8819227b699c6744890f7a7986b4. 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/a00008b2-ce17-4ffd-9bb6-c56dbe68966d.json and https://artists.proofprofile.net/proofs/artist/a00008b2-ce17-4ffd-9bb6-c56dbe68966d.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 0x5d93fff10c54e0149aeb38ff6998db547b4ed62fb5e5659da57bdbb83e81fd78. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZN882359524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc41ac7da0d59194bec68988dd1657b6baf33518e3c3eeb222d059f98a166b6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCABU1415818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fef1ab632f79be461bc84cd43036c754cda68ae97be99c12fcba5a499fefa2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBSMU3331711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6172c4df32e7886c377c29d570642a280d5c513b86c71a4d2db3baaf26208b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU3331712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7f6992cb0c6c435cadcc057ba7ad2ccfea6c838b20a948c20bb60ccc7887c7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GBSMU3331713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0fcb952f35d36223f0bb0ecdc70f82233dab57c6b52325aa48f84354fb8920. 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/GBSMU3331715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c812f979d8691ff02d570768823f0e99061b586b35e1f9eccad9e28b940d70f. 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/GBSMU3331717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0d88b7d86360e7aa2cd5245aa6ecfa54fd24dadefbab3ebedc542433e1bd7e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2443507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcb8870db200b87e3d4c4c8f08023c7b8ed0668bbe0d24d9ccadbb793fe51bc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIX2443509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c4fd40e47d9c5160061108bfd9f48e9b51d4970b34c26e9a57cfd34f0287d0. 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/TCAIX2443511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa057f15b8860b148ff9ea30bfc8d7b69383992288677853dd3165648e8b9f72b. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/TCAIX2443513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85900edc206ddfd00774d52e7e9f4d67ba25451efe1fea0cb5624548795a5bd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2443515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed3935c91c194f32fe2fe0178be6e4c4d7b973ace9f9588141d57df153dcafe. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIX2443517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f75be1b7ccbfdcdc449ec4c9b97225b608978af8bd4a817a50c18da15d0b2f. 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/TCAIX2443519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98862b8800d6c45d8c10bcf28d83b2b6ea2d06106c73538fa1f41396a48340. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/TCAIX2443521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4eee5d0fd32f43067bf08d449b773a8f312db7838c63a45878c41f7ee314fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2443522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fa482edf333d088c81880dba6baefd4bf184ab4cba22c13701e516d1520761. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAIX2443527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea4d03a203ab02a32794aab898d7ddae6855cdc84ca56c4eded8b4787890e6. 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/TCAIX2443528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4d4a96653e24b29a4c75e837369774c6981410068eab1f8db2f17b01f1785a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIX2443530.
El Suspenso (Blow Family Inc. and Twins Music Presents Kenny The Ripper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86246009f2e078d5f403e3ef60eff47ae8c768831ef02f78b67e9d4583a7f8f9. 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/USGPJ1111105.