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 0x5ce72013139a1e67dd4ef4ed8ebab9d23ea5c75294c914cfb0d2dbc9de9fe301. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c78dc5db-80a3-47fb-9176-1f4fc298f950.json and https://artists.proofprofile.net/proofs/artist/c78dc5db-80a3-47fb-9176-1f4fc298f950.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 0xf5e44169dd9dfbaad3d2de82620919cb407eeef5035ac15b7be22c238348fd89. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US2BR9704843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22bea047eb1a76dfb5f60cf4db6099b9294a9837f0371ad2816e706a416b5b8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US2BR9704844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a71c4c9150e1f44ca01700992bfe11278bb81ee545931ec32940584ed3854. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/US2BR9704845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aee58b8deff214d7d1ab979230711a0c877d9991f6627c99367b014e426e64. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US2BR9704847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00755a4e40bb1a94ed172079060f092f8d54cac5eca0b456e7a16513691ee3. 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/US2BR9701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c527717e6b79bbcd3e7c6545ebad1b95e5d438bf3e0faba7035125562ad3c0. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US2BR9701477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24082ab0da81d95805025083a6ab79925a8136b4a2fea3cb279bcc03bcf2373. 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/US2BR9701479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15d01d0a1bfd9918a40d18b0633db93a085e6312900b1ac67c6e610175df9c. 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/US2BR9701472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fba4777482499d1bef1bc6b5209281b8fd89c689bf1af7e3be422664dce63. 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/US2BR9701478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf653953c08244735e8d60103adf93892684b3008d886ce075734318acb1339. 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/US2BR9701416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed13c21da18c8efefd8f77e95db32ebe3b5f9b3f568c876f56d8271a1096a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2BR9701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc3514d10104344f86d5715cb77ef74e6fc214c0d724b4bd51fe49a2724065. 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/US2BR9701475.
Los Más Grandes Éxitos De Edgar Alexander & Azúcar, Cacao Y Leche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed13c21da18c8efefd8f77e95db32ebe3b5f9b3f568c876f56d8271a1096a3. 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/US2BR9701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ace506ce79c05d40d9d661d19b67189d79e6cd55b3b6faeae3a9a398b1c47e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US2BR9701471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15d01d0a1bfd9918a40d18b0633db93a085e6312900b1ac67c6e610175df9c. 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/US2BR9701472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953801096a31fbe04c7492ae3b2728974c49836facea6c0e474c19611b3c7216. 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/US2BR9701473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00755a4e40bb1a94ed172079060f092f8d54cac5eca0b456e7a16513691ee3. 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/US2BR9701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc3514d10104344f86d5715cb77ef74e6fc214c0d724b4bd51fe49a2724065. 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/US2BR9701475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf653953c08244735e8d60103adf93892684b3008d886ce075734318acb1339. 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/US2BR9701416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118bb47efaf93cdd78a0601ec3c0c90f8b468f67dd363f38d3b74d2354f00242. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US2BR9701476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fba4777482499d1bef1bc6b5209281b8fd89c689bf1af7e3be422664dce63. 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/US2BR9701478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24082ab0da81d95805025083a6ab79925a8136b4a2fea3cb279bcc03bcf2373. 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/US2BR9701479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc7132d97c98c48c0fdcb1582c53a0c7a9acc906ddfaa3c147736ada6b028af. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US2BR9701480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb858b664881527b5703e548fb3d6c1ef58c7eceb7f40f2e62e2557c2f4a2f7fb. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US2BR9701392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600aded1cdf0435437036b54b5f5a66917c475ae36fd5f2dbee3f096b2f7fe66. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US2BR9701341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78460238395b17d160606e00c3e572caacd797ce5b1cca359d2ffe6a1d6fa1c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2BR9701405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144f426375d0ce885c6f802aa9b79dd7a5f9cc083ee5b4d0459997eb1e3b695. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2BR9701406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065fc41e56cdf3abc1eaaf826e3bdc5902036942067dd02875be29347add5a7a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US2BR9701407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586fc2246ade6a79e39fd51f67326df2a950658d59484c87861c22bfa4106f0a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2BR9701408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab4dea06a3aa8daeb6bf5d2703958f414db1e2144ce27c0d1990fbc8adbad78. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US2BR9701409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20f3a87aad0043d5d17459f8cea9834ac038f8df55e284bdb5c025d103b95a. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US2BR9701410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac545fc243c96b09d7b3e74afd9638a94e4868c50836d85a093d6a9b1be230de. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/US2BR9701411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708021473dd6f39739d6cf600aa2b043cd4153d47a3445ca62d376ffb08e3e16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US2BR9701412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cadf9c13d584d542714b66e9ecd51180d99b1b3cb627e169f78a5afcfb9ba9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US2BR9701413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4f165112af874b431d9038c9d607b687f9118ad00875c0fd04de03b631444. 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/US2BR9701414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4524665bf10bf45f5fabfee6a79b9304325c5312c308b47884071de1fb7d978. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/US2BR9701278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99233aa591ab02fbc4c87e4a25527dbc33694a24d2d8ac03645af94efcc40336. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US2BR9701415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927fc2e86d4c55fd63c6f31f9a51050796be33e0bfc0db4a8bdbc20d5a64321. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US2BR9701417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867f8fd361f529c0962f1099836f4900edbc990b2093f4a3a1ff60c78ef5809. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US2BR9701418.