thumb|Credo III in The Liber Usualis thumb|An example: the autograph first page of the (the Credo) from Johann Sebastian Bach's Mass in B minor In Christian liturgy, the credo (; Latin for "I belie
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 0xdf12c7ce72b3ef3a3bdcfa4ec5bbc8e4586e61dc5716fac5396ccc279a9e5fa6. 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/ab94e349-23f5-4f74-9700-31dfc5ea54cb.json and https://artists.proofprofile.net/proofs/artist/ab94e349-23f5-4f74-9700-31dfc5ea54cb.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 0xb4ced8365991f9e772127186af9edc636c4efc9b7fd6b2be9307c60575439930. 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/LVL152100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee773ed3c2cef9291f6fbf0788a50f86473b19a2f1014016666010d2f9ebf3a. 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/LVF351400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563ad23dc79d6ae593e65592b5d9c61aff0098993bb54a68739fb3e7a78b5b8f. 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/LVA100200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934fc47c47ccde844f9fb3e0d06d9bd2ddbb57edde4f0f963cf2468a2a6735b8. 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/LVA100200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341f7869c2f32aa5890a6add71d0a1ba7f37d909382edc34626a76f6fc23725e. 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/LVA100200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ad4375deec44246c25836f970de87c21339aee3f71969f9a9826377209bf83. 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/LVA100200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1316c98bb025f7cbefe7893b003b9687622fe0508fb2d91ed7ebb43bf27093. 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/LVA100200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8904bd23531c89da7ab20a0306802cd001c1a1fe3c9be66559fb7311b1f2eef. 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/LVA100200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6181d333fec0f9e5625a16e1339577fd4243a27e6b5445cd868b12cd0563d8f3. 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/LVA100200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2654a654816c2e42fef0a07187fd84f2edd15ac1496d5f4cf549682e0886c4. 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/LVA100200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a8406eea14301056fd2f35b9f5ac04867130602cee5ec596f7029f4b8910f. 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/LVA100100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e6a0962a71f79e79c805317232b683d6840ad8041dfffc37859ad503c7afdb. 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/LVA100000192.
Turies! (Credo 25 gadu jubilejas albums)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf96900320ae228180c4a7d9bdb6e07a5f11cfbdbfe978a2e15a0e3a36c0d00. 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/LVA109700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3370f66e5e613b3e0582e275b081d520bc50d776808f964e46f1bf0810ade2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LVA109700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317cc696e878ec0c3e4061b28acb6aaed74b84737df7ee1563f7052db4cd2ddb. 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/LVA109700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0823e153026bb501b275c3401563ec8fb1270be2929dd2dc33d6bf5bcfe7ac5b. 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/LVA109700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb446407cc7d2f70042f498c89edadb2e0db900cb4c10e3b2e1972234a4b954ae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/LVA109700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dc0e3cdec6a0b787b37c9fc2e68bd33deece63ff1d57ba2e761a4e9ac99bda. 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/LVA109700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d33c59b6a6d82a9b09488691ac305a15b10526ab17f035e3cc98e51cc45298. 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/LVA109700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74cfcbbe73ebc457dbfcff59610869684669b1ac116280f0af262ce502cbcce. 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/LVA109700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa887cf9ab47b75872e50aebd51fb059f78243c958b7f4dad81e0153400474fc9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/LVA109700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba56d80f7a6ca8e7c1199993cc6fdc8edc3f8ccf97bedec09a9fa9a6d44e48. 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/LVA109700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0391dfd729bc1b935d0660d63f85f64edb581f9ec2dabab1c48d022826dcd. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/LVA109700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8904bd23531c89da7ab20a0306802cd001c1a1fe3c9be66559fb7311b1f2eef. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/LVA100200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd6bf2fc4db40e65548fc8473de69080f6ed4bb17ea8df57ab65ad1ded95ce3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LVA100200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4842cc2e28878edbde17bb45ffa20be9ff458b15453f23d0ba0777bcf4607f1. 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/LVA100200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ad4375deec44246c25836f970de87c21339aee3f71969f9a9826377209bf83. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/LVA100200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563ad23dc79d6ae593e65592b5d9c61aff0098993bb54a68739fb3e7a78b5b8f. 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/LVA100200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1316c98bb025f7cbefe7893b003b9687622fe0508fb2d91ed7ebb43bf27093. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LVA100200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d33c59b6a6d82a9b09488691ac305a15b10526ab17f035e3cc98e51cc45298. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/LVA109700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e6a0962a71f79e79c805317232b683d6840ad8041dfffc37859ad503c7afdb. 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/LVA100000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a8406eea14301056fd2f35b9f5ac04867130602cee5ec596f7029f4b8910f. 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/LVA100100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc65956a57fcb42e6c316dc0e93068cccf17a84912f0bc7044dd32edb3a2f40. 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/LVF221400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74f43686a1d8b68a92f25151c253a42486de4e94ab917836d3cd07489d0fb6e. 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/LVL152203841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666281624ae8b6739a6302992151826ddfdf3a692811d2961400cb29cd4a192a. 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/QM6P41401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92beaf3e46c8cbe6318e8ce2170f3eec926fd6bd5662b2f4548c3448f6bf3d30. 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/QM4TW1663101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf96900320ae228180c4a7d9bdb6e07a5f11cfbdbfe978a2e15a0e3a36c0d00. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/LVA109700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74cfcbbe73ebc457dbfcff59610869684669b1ac116280f0af262ce502cbcce. 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/LVA109700049.