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 0x4b3608989a15e42dc9c61be48394845eff8d2dafcb71aff530d8152b8db70888. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c03d4ba-dec8-4b44-bf4e-fadad38c321d.json and https://artists.proofprofile.net/proofs/artist/1c03d4ba-dec8-4b44-bf4e-fadad38c321d.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 0x979c3935376d48b8237cd5368213966b4aaa4f48b49c1992699803518ea72567. 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/QZNWT2345466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaecd5950036ad2225a678ac37a52099e45cf342efe4fea77f74fead57f1334. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWT2345468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385c0ddeb7ea0a6fb0ceaf9c0c7f4755d9907fcc4dda3977786efdb11b1303d3. 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/QZNWT2345470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03a1d8c8e77d27f1ed43c405ddd705f7d23812c147d034b81ea3f903e70e337. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWT2345471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfbeee8ef39228f5a4eb6ab3d85a87b050a7d8157577967ab1dcb07e5e3edb3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWX2387925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0b7e1251f6ac0756497afe12a841571e6423d1a604cecab133982bddd10d12. 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/QZNWX2387928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab03a3aa4f89e08bbf55074f888be188b11240ced0ef6d1c3810f72b445c3bf5. 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/QZNWX2387930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469eac610ca566facd991e69872bf0de16a46df742243b7da0984ab2d289c6a4. 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/QZNWX2387932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae9ceafa1312c0879cb6d31e86dc5899aaaa57e3ad29c8796b62bf00efc2959. 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/QZNWX2387934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b01ee374a4b403f0d70b0b52077c5dbd8d4e7308027b2b62f5db960e0419ab. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZNWX2387936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea9cdf00470816793e786986becb26cca49f255453623ebb68127160a7129a. 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/QZNWX2387937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf55090502cae047c57599fe97d92ffb9e05d14b2aea264e198ac29565fe29db. 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/QZTB52303161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4c9d581013df825720bc0a8c0fd3df02162fe4ca534b3af8c946025f65804c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTB52303162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d80b44f79ce0624a426f5ba76e9e89e7b3d4b936f7a9c76fc9159904caf4d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTB52303167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6dd819bd2facdf24e0ff44cfa6f4e796ccbf28961f492d0a27d8372b8e39ff. 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/QZTB52303169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9446eefe9ba8062cb4b6b83fd1a4e50248a693256e1662a7543212f4389cbefa. 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/QZTB52303172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34420d97bf73ff3988e714520a4c019d73d9e66e0273a37bdd780e6117c1f6af. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB52303173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901a1158451884a418382cf17f2208701d362a394a00137330c09a8e3aaac0e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB52303175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b998a5b8f22933b834afcfa24714467615b7510a65339a2e76ff8825d30b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB52303176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d3cdac0abc2173ee762ccb7957ee9ea0405e4284c8542458beb3855238e06b. 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/QZWFH2373706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4bded4e5a12444053e9fa04a115dbda6b723541f81a171e0b8d0ce4fe61262. 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/QZWFH2373709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab430a3d7f9b84fdebec61f05beeaef789d25b44d32d1a8ea5e43af5f0fe67c1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFH2373712.
La tarde se puso triste (primicias 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143cad80185981c1e6b5adf840ac612241e6d729c7b6b51291050ebfd4c1b426. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7P2481101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27df51aaa8f13efe289651cef62f98f3b50e50e15f6e6f210c1929f3497c26e0. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZZ7P2481102.