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 0x2b26a3b439a7c246d1b7e6c4769a294799225afd138491ec7a0a7d5794900cdf. 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/5b3740ce-5dfb-47f4-8846-0bbea46f5e52.json and https://artists.proofprofile.net/proofs/artist/5b3740ce-5dfb-47f4-8846-0bbea46f5e52.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 0xe01b5d22eaa2878ec118834461704eac0d011f03cc4984aff132ddd1716f2f50. 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/QZNWZ2003957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29442f050b3dbac30377ac84274fe4c48a9f32ae71ae792fc215d871f71d52e0. 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/QZNWZ2003961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb7d1e80ac34f37cf258e027bafba32a64b54f08fd8499b51caa389ef1f07d. 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/QZNWZ2003955.
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 0x88c4af45baf8ae1393c96910b25efc57f98646e5d0b191bd020bb84bf785ecb2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZNWZ2003956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6082000ff4910ed34a8f6d538a6b5658572da8b7750e4c2a3730fd13d4b1cc2d. 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/QZNWZ2003958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1522921e4ff53496bf2b2657522c60bd02011e20dfbb12bee1b47ef68e18a80d. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZNWZ2003959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f5e45a103ddfc840651501deae3cbdfee26b0b0ba9daa68547dd3498594f8. 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/QZNWZ2003960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815237aa09164e58dda49c16116df8ce584597f8dc9dffcd338a25dd19530ecd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNWZ2003962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc71b7b74d20cb58a9fe8acae808fded0d7837618ae6ab3f775b3c0a1e6190. 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/USHM81604391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b99e53ad7ee9c946824a1822302ca6f117882daa129e86ed473ccf7c15e5bd3. 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/USHM81604392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe468d7b1360925a441903c62d8321f7efc562b65f3d6ff54155f38563e152d0d. 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/USHM81604395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdb2b5c3a479954d66d3b3209a3366f989b412b7ca0e85c9f7f6e4c78514c10. 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/USHM81604396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba87ebe7dfae2229c1a65dbcc02ae6737fcc7e70049f67bc3c32d7503ff4bdd3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM81604390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe2fa843c96001d22a38c1de753bdafa7ebdd95d01d43921421366847b7f34c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USHM81604393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91029e3de5c6f200ce1dfe1f248c3dcf55d20e71a5f51a1259c79fbcf1ff1e13. 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/USHM81604394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ee924b73c55a7965c86148ae2d25d5a43e7a4cec0a325ba392c1ca51a669e1. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USHM81604397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a1ad2f1ba8fe29a8f1d5a49d4b1c60f9be9daf094c7ef9478442dc4476ed34. 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/USHM81604398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bef34ddf873bf68d90e37846dd6d00b5f63bfda460f546c39908f5819cb8f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USHM81604399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adbde0431e30553313256072885a72d03c686126c44925cee9b6e3b075e1722. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFM2411262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92b09887f52b9c3132366bfb5419a904f0ba8d5b88f42eb0b2b2e10266f820f. 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/QZHNB2273316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd173e8c71a44c62f51c5750872c1c30b7b810691e93e368c6ff49443f41f0951. 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/QZHNB2273296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b9454f08915e096207e4be646b76c72560e5158cf9ba17e1043af0eda7554a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2273275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdef249221bb40554ddec35b2808bf8a3ff96448d2af3584fe5a13cddb12877. 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/QZHNB2273459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37cf17397e77c6b5ded31fc11f92411bf65c37930b46208ffd99de01c690bb8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2273268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc363447ba49c16a45b0b458f619c090488b4db67d25bde7b33847f595340c1a9. 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/QZDA72268007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9140d5e78c2777c10c2b833c8271e895fae2dd69dee904ffa253b3bd586c749. 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/QZDA72268032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf1a3762a501a80f26c6159d555613cab8ab61bbe9fa80a139b2d1a8b54ca13. 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/QZDA72268008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62b0482c6b8eef2a4ad2c32342ddec461006321ac795a150dfb0b16bd6493ea. 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/QZDA72268005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c9fa84cc55964131d96132c32307df0ba28190d526a045cf27563a6b503af6. 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/QZDA72268004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856f08f5f5cd29f3795fc3112c93da718e0d191f9e9ef4d0ce3969522734800d. 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/QZDA72268009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bebb9fe754fd7145f50093f216a333bc632c87dba717574aa0497a8f215236. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA72259401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf330c1aa895eee57a0b7731ed5b4d4b4ee78fdcf6c05d150c726ca3c22dc14c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72259462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a827ad2e3e19602309c12ac18c970f3747d2bf1af371c778e262bac24d3216. 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/QZDA72259410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238e746d12fc679f3b4a4a7ba464afef21af8a8845fb1c2e04b56b13a4a39278. 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/QZDA72259472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf9438d5998be05aa534f8e48037ea5835b8a6ab654cde49f4cf41a0a11466e. 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/QZDA72266173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9156019ddaad34b40c7b55f76f10aad71dfc1f1deeadf4c59cfd53f6ae3edcf7. 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/QZDA72259426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eb63670f7078072b20fac2eaa9b6bb3620d5572b1f70764e3d90f8d0a6f2eb. 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/QZDA72259370.
Abre tu corazón ft. Coro Angels (Catedratón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706ec28b6e0a2de7e73ac6736548341f7914a8d93ed6297ee4e498785ba16075. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2290771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da244b0212e55b386a14832741edc1dea5f75347057f1e5224a30a367bd92e5. 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/QZMEP2108736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d267928ba3ee31c1f6004a7942170cfe34082429ad5b869ceb1dfe4a4b28eb. 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/QZMEM2186632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a094f024b7677c14ca051c910daf910448a574aba7ca2281eb5a35fa865af8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6G2190322.