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 0xba34c2f58c69e225dc73741de11445639e811a32187d9beb034aed263a5bfac5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/787254ba-5137-4ee9-85bd-0ed51cf10d22.json and https://artists.proofprofile.net/proofs/artist/787254ba-5137-4ee9-85bd-0ed51cf10d22.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 0x647c02a6cbbc57c5d0407ecaf73662f41e979108f0c3869dfd2fb20325548d9d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USJ3V1020683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20463db10f0070b059d3594ce43a64e4782e6bc4303851c80a23e8c06ab30164. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USJ3V1020684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826beb732b5ddde6eccbf1097a6047064c2a71045504788ce9c25602099af925. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USJ3V1020686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d194a8f3f390f8de9ec1bd032362beb0c92d960024a3b7b7813f8958ffea47. 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/USJ3V1020689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af863c7f1c50bde7f179023019fd1c7d5e692d3fbc902b413f41764bfcc8fe0. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USJ3V1020690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0657eea7706feb406c2bfe59f85f7e59b67bd2caf867615f2ddb254e9815fde7. 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/USJ3V1020691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a939efe11f171903ee33551e01c2392a8e527e5053cb72daae7c86ffc70c77. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USJ3V1020692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5cefa2c9b7780e19fc904aa75152b3f3d5302f34d3131704945c06fde7ecd4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USJ3V1020693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf5ead9fec1b08770a7a3b8a83630ffff3866528f0cf8808575c5027c43edcb. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:42:18Z), 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/USJ3V1020695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56802a51f4731e549134466f4138e4a99bebabbe381d5c6328e44582c99e3e44. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USJ3V1020696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b29568050bea3c8eca09a0d9d00e74803887e980920da8f30f540bb2c5996c5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:15Z), 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/USJ3V1091036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef21d973912e093ec0fbf8c907b5317a5ab2c3563e9e97f014ba94b9c27c1fd3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USJ3V1091037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba52a66408777a75bfa909bbafd902f05f526bf985f89277d6623101f2a690d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USJ3V1091039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837589597eabfccddae1aa431d3bf70ba59b90f0566209ba5233e8a7e86a06c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6DC1856093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ab25eec976d3c0d2f47ab431372179c3cf802b57ab63dfb1f854cabe6b8323. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:05Z), 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/QM6DC1856099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7963a593dc2927e145e38275a1002ae29a6ff856b98af48ff7ed6f6f8a9ce99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6DC1856100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e35a0dd0dc5a0d4808bd6724147bcec790dadc4a55a648c6cba300230e49b8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6DC1856101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceccf7420f7cf834e2fb8e194c1829773d6ec87ee74a3275b9d6a028a966d92d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:00Z), 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/QM6DC1856102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382571bd1588ff9a9405bfea95fe9e6bfefe2a2ed82ae00af8cb98f245fc5ae1. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QM6DC1856106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5559c39d6e3279251b70a2ab8153ffbbab65126f114c59455d140f14b35a05ee. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM6DC1884196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6191af7cde4749263d1a2455b956b9aaaf1754790b3c943d5013d2146b6014. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM6DC1884197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d11416338d2947289d70d236df61b01dc082e489f22058b8a0bdad14c12fc1. 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/QM6DC1674626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8aad520d63807d877557c82aa03b3d2e5a48ea09ed2f437c5bc3a69308af0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM6DC1888599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8168d145778e44a9cf666706d2311429f2adbb3ee48c08123c7967425d8f11. 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/QMANG2225779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161ef0c83888a2f122de96ccb461ff8ecdbd3ab358559073ef3a69dc94fc5353. 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/USJ3V1327692.
Como En Los Buenos Tiempos (Version Mexico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db3ff21326487eb13a1a996e9b9563a298e2bc5e7aaf05d07c8568a48e8411. 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/MXUM71100111.