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 0xef03918eee024f3c1479af9b660e94156463e9c666fcd99229d94e137e0e2637. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed870d4b-80a6-43f1-aad0-5cdd1894e02d.json and https://artists.proofprofile.net/proofs/artist/ed870d4b-80a6-43f1-aad0-5cdd1894e02d.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 0x1307254f1838e886290677e0c16b574e35a0f728439bbf1044c2c0da99516cff. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/MX2832401367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39906113da654e38474d4daefe689172d56b1f3eed9e9cff387a178cf4eecc70. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX2832401370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad989a459c0795e2ed47407e617379f71a48e0acc6e0386e3e7566ecbe08849f. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/MX2832401371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174403ccbddd1dc665aead0d618832c72a8de86e679311e6de68b03fbbef2474. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/MX2832401372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc794e8daef19a86589b6eb5b0939870171a3396ae09ee1fe4aee7a134b0a1. 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/MX2832401374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d4b7b7f382f2dac61f54fe8f2d28d15b10180496ee268f02968f5626b4ef3. 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/MX2832435468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfaad02275d60e8b71e2a96a2de1bda88225a6dd49ccfdbe5f89e61d28e06c9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MX2832435466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a4dbdf5da29177474853db9519ebecaeccce275c59839b095d8e13a33f0ca. 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/MX2832435465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046483d14f7ae1e43847d75bb5c6f95b94861e0fd6270bfe3ec0e6eb01f03efc. 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/MX2832435464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f921b8a47778bed857762e4ca405e3e90eeb445edf2db73e943919f5b8fe171. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MX2832435463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8470a3b2cbf98a152c8a1d8d7316cfa2105b724d3f2bdfac17a88d58845c2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/MX2832435462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01ae90a86e3aa584cd91a2da4dc3ae51cae82c723317691ae414de585adcc6e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/MX2832435461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381ec950db43cb289e71e9dcccb9a701c1e064df32aa1da7249d19b930e4c84b. 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/QZTB32577438.
Hijo mio porque lloras - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe058c490608c3874cd3bc95e8230a7ae96f63c2bce45b0ba170e0496278f96c8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTB32577439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194fa48b28634095be92267f9d724c31b36825da39eeb6d0ec2cc1f879575aab. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTB32577440.
Estando yo me angustia - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974d57a16d181ee13e20dd6f32e4faea2d9ad1cf827e3a816ab03cbf149f0ac1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTB32577441.
Nunca nunca Cristo me ha dejado - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d6070669cd8b4da8311e05b7eba08e1e5861b5b7719c260614d76a06fd8af2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB32577443.
Es Jesucristo la fuente - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf47b54b8760ee14f6c8d6ae0b77824708959e2c7b17168bc108e9fa85bce27f. 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/QT6EU2519034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc709fe59c5afabaa8d205df167a637572e0351099f0db9bcd8837cbfefc4c. 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/QT6EU2519035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff2e111c2dd89c0360040d8a46f3804448aef762284dd1c66ff07355b2d6f42. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/QT6EU2519039.