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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da426012a73f8e21141691db2cfa5f266a0d07262b65f1038b47d65bda824e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55c7f893-550e-4e15-a430-2fceffe5ec4a.json and https://artists.proofprofile.net/proofs/artist/55c7f893-550e-4e15-a430-2fceffe5ec4a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bcb3e8388a0069ec389417b7fc25fa8a15162c23930c5b3f0403cbe7974d10. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USAP38832701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa338b54b9066af49415df26e085e10db7bb20ca0d4ee8fd97e5373f3dae01e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USAP39031805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9b2f30b1e7dee6c4325ec57287daabd82388e9ae6c47d4c86ec5666cb9d0c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USRE19901479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3091528b8e4d049222636c680f04ed4ca51e36550972309d87877a3d1191763. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:22Z), 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/USRE19901480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2abb7e9c5d55b05cd12612d7e7a45eabb4c722919a4c8b37130808477f25661. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USRE19901482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f2d34a1854c8e287a109ac1c495d9996a18061a3779166977bf64ac0d3133. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USRE19901483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b94c49742b65eeaec07a0e49d705048a6e5a9fc11fa3046e6dc8f9b5bd4f1a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USRE19901484.
Un Mojado Sin Licencia and Other Hits from the 1960s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b5f7d9835da4cbed862d5a226b24f53c3caf71e847dc9ec42ba364791889c5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USAL30000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b06a457bd288d64efcc40a07afcdeccbcc1e2d530bc67e50553a16b5efa7fe. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:56Z), 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/USAP39947801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc4c11a715766f614be7c97a10a1dc5b2d0f04342f769839e574dbafe3406f2. 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/USAP39947813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c23683224bd90c3d81488a0f8fe2a5d3f7e42787b6ba08062694baa1f7e22d6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:56Z), 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/USAP39947816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5b4be7943d91ee98a1c38f38b9085306e3879b242b95016ea704660e47462d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USNA10017219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c05a294775312db9deb5997efeed5cc818ce5e84dfd90ec991b6a47152ad93. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USNA10017222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e700e5353415e5b426b9114d9d31c94ef4a31b432ccf2d769cbaaabf64520f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USZUP1010224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf65c27603fa34d7200198acd29313b576c69c4fe2e6e33f5cad0994947ab667. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:21Z), 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/USZUP1010309.
Flaco Jimenez vs. Steve Jordan - Battle of La Bamba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa523cb59d148f3a621a7a4c23097b3f02ec8b6fb316c11d6026ce9bc6119d0bc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USZUP1010422.
Flaco Jimenez and Friends - English Version
Club Corridos: The Best Of Flaco Jiminez - La Bamba, Cielito Lindo, Open Up Your Heart, Y Mas
Flaco Jiménez Y Tomás Ortiz De Los Alegres De Teran
Flaco Jimenez y Tomas Ortiz de los Alegres de Teran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b118c07b5dd310971ea5eba3e4dc2426268e1b18e33cfe6b33f2bd062843f0e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81067863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe515e2c05d44b33adc646e8ab976d19fcf2a1ecf9286064b4ad08466fba8a09a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMC19544493.
Bellamy Brothers & Friends (Across The Sea)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f27dd3c3578dc11ff7c4ef785c460bfed0766a68c053d9d6830a47d876e8f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHUM71300119.
Happy Birthday Buck - A Texas Salute to Buck Owens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e23a051c68708faefa7e93be49f9ad23d177b6bd7dc3556597b7b3776777ce. 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/USAKP0700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f693a48697f26d326e8d973a0db5a23b43c7cfa8f1ff898145e9326e385829b. 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/USKO10302141.
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