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 0x55fe4cc483584b57f278effd5cd047d52d26c060b7a0b9feef194de202a30b65. 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/977be1f1-a685-45a6-a7e6-efe4d8903f52.json and https://artists.proofprofile.net/proofs/artist/977be1f1-a685-45a6-a7e6-efe4d8903f52.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 0x8ce8fe52bec9618d0df3bdd11c2988d63a913efca06022fc61b68cf7cfa61516. 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/USDS19700495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbf384631b0b98ce99c55f2dc41b16ba7e580cd7d68675aac400ca55a3d8698. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USDS19700499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d4a54e3b8b86dc1321b527c96864c44106e98e2105cc28e6af5aea12967e0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USDS19700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0da6e5116bc94e31d42f4b19c5a8e476f68b6a1ecad774320c0ef8936b3b35c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXUM70904124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83093a3b497b88b04eceede422430012f6afa8031c638504f70be9aff4e74b35. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MXUM71002613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72697b77b917f172feb17f210ca3792d4d65f036bf2da71fcd8622ac0140810. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/MXUM71002614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13a2daf6c1ed1c810c1ce8b9de759c48f4439b4b844f11f20303f0e4e7efff. 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/USDS10603247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0febd99f20c87113c423b868e01b4dad5c4393c0a39a93090a891782603c3d. 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/MXUM70803328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ff56d74704330575f4ef9c1bdd321fee200596aa06b471afa72e8c896358b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MXUM70904119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d2899c4d4ec19f6f42006e1b4c80b8c9ae7269e97f0c03ed12f30f148e5cd0. 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/MXUM71001458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850cb3bd54ecc1545f4cfb8130c6f558f712fb25197e8f249d3c92a2dd54425. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/MXUM70904127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fcef1373654e6806a496de61aeef54fede3c8fce11f077be050a2bdc98f624. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/MXUM70803320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5594522e9dbd241b21fc3381fba8cb133e6dd8ce37d3533e5112efa336922. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/MXUM71002045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeada03d96731da78459ef15b6294ef83c1f2f994c5bb3b89a5d8378e4db68741. 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/MXUM71001934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97d09a75f27436063508d9bf921fb8a37737500d2da998f971cef0001092e1f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USUM71019048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7689a4b1e717788759660c47c976951c0d16d57bd675317feb4adf2a0361882b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/MXUM70803318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491deadbd2034d65fe6623eaadec377784973950ddac19377d4ccc8371d5a47. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/MXUM71002616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dff79bda2b375d0b5235e2b42937bb5c90fba40266fa9ff0a3bc4b298276207. 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/MXUM70904644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7689a4b1e717788759660c47c976951c0d16d57bd675317feb4adf2a0361882b. 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/MXUM70803318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8ad15dd5d4468fb8f58a43bb03f78de34a6ed0e2f8c97582f917e215386e9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/MXUM71002617.
Fiesta Navidad Con Chon Arauza Y Su Furia Colombiana "Merry Christmas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a23781fd7e058b5c6ba616474b11b166592a6ad78872b1d7c68480d17133fff. 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/MXUM71001274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeada03d96731da78459ef15b6294ef83c1f2f994c5bb3b89a5d8378e4db68741. 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/MXUM71001934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e833053fbd40d10f5128e1d19efe54f1121c955fdc01c59513e6e13c15f8b7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/MXUM71002619.