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 0x317efb21196b24ae78d5939f9873926278f533c746b296ae81cab866b8526b84. 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/e8543961-30b9-4f57-b09e-c1b7c6d00827.json and https://artists.proofprofile.net/proofs/artist/e8543961-30b9-4f57-b09e-c1b7c6d00827.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 0xb66f6283fd8641689e514544d01bf8e37bf67c4dbcf3a20a3c5212a31df974c1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IL5841720329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec214f1fe3219d8d11abab6748ef6ec9ae029c392bc6862d256c555b09c323a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:48:32Z), 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/IL5841718586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f0c9f905810a3349cc204896caf5914cb6d1bec021bab53058222ff2e5acc. 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/IL5841720330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b156c32bdbb192d16f63387d5cdccb00a30f1c1b934cf07eeed75dc5559e5a1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IL5841719652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9407bcf89fcfa7e87f0ec4803e6ce1bcfb893c7421386a6abdf8c6f75d8f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL5841720331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7147730127e3b20b72d4144f1f764e2e9ee7d008cbed068da2b336452e1910ef. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:05:03Z), 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/IL5841720332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2da5f3efee38e9978f065ce502b7ffc98fa75f09f33213a8470cb021998dfb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:01:28Z), 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/IL5841720333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c098258cf574b46bec70d24a8fe264a92ae935e26e07fa9ca9d8a1c7f159de. 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/IL5841720334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103992b9c7dbdfc9d12a6ad5f5a3dac1652965fd4fa5e07669ed170d7724787f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/IL5841617266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d6dd66b572c60b4c40c3f7f9ebf61951e82c2bd8e474e15462790845377b58. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/IL5842028196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0df8862b8abf9f8895c44ea54cd74c557e435e797fe120231abbcb9124524e4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/IL5842029322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea24fb82592c919ccf0503957e22c2b209772bca572d904cc79a0633e36098. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZES62201544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fa45a96d81844407111a938ae7e5afd3ef164ee83516ec1c8e53afb6ddf6aa. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:38:04Z), 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/QZK6K2216640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b63f8d77dbd603242bf4750e82a49a19c98d9a013e1dc5828caeb1a5245c297. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZK6K2216642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e21f5ee6f154dcfacb24c15f6fd36306b16cb54ed7cb12f4f3f8fb28bb525. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6K2216644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078965235ac31ca27061e2d3d4ac5b512185d2d4a586cc3f19f5ce2d14e122ca. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6K2216647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5533279c7443f1bee0ac6a2ea14c566e9d0a21ec798082752b710558c308265c. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:15Z), 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/IL5842342540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b12ab2a3d84b3de617f8e47c031812a9366b7a13e1b615571f8ed8761ebdfd. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:14:07Z), 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/IL5842444102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedc086368e65cea687abcdb3f07e715b12dbccafaba89ed2ff33241fc92195. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IL5842445482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d578d9ef9706a467f9a51f8d64a944922bd323abbb28c276e2b077a8afa2e57. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/IL5842447016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4070dcb6157dea255b03f48d3646a98cefc68b2a32f55ec4693e8122bb8d7cba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL5842550651.