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 0x9512a1ef511d89da4bab6029da4450d909d91536d226112ed062ce133f100a33. 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/4b4b7dde-3ae2-42d5-9234-b1243a960e51.json and https://artists.proofprofile.net/proofs/artist/4b4b7dde-3ae2-42d5-9234-b1243a960e51.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 0x8cb050348e1e003f7ac15b3e3c810780efb27e85077b25edf30beaa858ce800f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/RUAEX2236433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a81af74059ccf35941a71b06db4b4a5013dfca6bd35cf7c96e747a3cdd7fc. 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/BC3PG2306198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556cf8fd7ee1c35efe22d12f685d4f5a39d0f519a11ed4eca44e2b8cb37189e. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCAHK2341280.
Ritmos Colombianos Brazilian 2.0 (Speed Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc93d81e423421d645937acd9f302c991eb986de965bb77dd11cf673ebba11c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA0L2363389.
Ritmos Colombianos Brazilian 1.0 (Slowed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3511a940e1a1caabb6bcc6207a7e12b842d896d9e6331f58d5bef9785bb4d6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXBAV2489994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f69942502cbca51782b08db15cc56b40592ea84700dfa43fb19b0910c857b8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA82478601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcfbff4f0209d0a077cde4206c396e251ddbe6e094f9b02dcc641d934ed67a1. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM6N22471377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5ed0806b024bb8021343e9855b238a8233b7641d365329fcb777f118c82713. 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/QM6P42494418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f343502adf79a3105c7e4fc44256dd4a01959729dbcf234d0acdca69e445c. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QM6N22485072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12035ce47585b2178d3bf98e38b27b95fda2f87e3d70e58307414d7171dff360. 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/QZTBB2419973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a63b90b69d2fa432d87b41ef459e5e0d2169c4fbc9d1ac491435cc0479a68b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ792426096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881772c0c53a0b82882bc11a6f44c12b9eba4250cfff9b5d726692e73708a1da. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ792426098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f51eef153a0c91fdacccb7b0bef549ed99e6bffc79c3faef3b5bab8cf802b6b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFMF2442737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fad134bc79e73cd940342de6c295d13d5326f6c80b52eb7e8232cfbfb4e02bb. 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/QM4TX2590789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e179fc0e19ce1df904777a1aadfaa4224b895f4bbb7adccded04bf52f5976d7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/RUA1D2552621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2b6627eb02557d0985db3cfec62e9ffa07a7319ac5d3dd728704720be460aa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/RUA1D2552622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a29732cebc07d01d8a796cb3da0fa8b966eebcb7737a7a2240297f38a1a68e. 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/RUA1D2570554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2892ea7597f5c4a8751d3c1cce7bdd141dacc7170a387508e676c5a2bbe40eb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:31Z), 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/RUA1D2570557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce305f0eecebed737bcaddfe778fa777c573b0ef77e2f948cb404c5601cb4761. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:35:42Z), 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/RUAGT2518846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c1ec94af9faec922b49125687001186c44769f4e4f2bf92b34e3bed4bf53a5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/RUAGT2557930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe644da4ed81e36af33f459d90be1a3ac19ab4242ffd714d042a1a62df1c61. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/RUAGT2569602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9e2960b28a9590d9fdd534a3b3bb20a16562d81ab8620cb071f52106107bd5. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:21Z), 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/RUAGT2575173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d65202ad3aa81404a862cbbf4c5a9cf5d2022095089af4059c5fd66e55c79d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUAGW2508441.