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 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 0x4c543ef09ef5250d86c716325e546b85562d4fc9d5bbaa52f5c0d0a503f05912. 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/dc14387b-ddc7-4046-b17a-f413320c34cc.json and https://artists.proofprofile.net/proofs/artist/dc14387b-ddc7-4046-b17a-f413320c34cc.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 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 0x02aedc79febdc6efb9abcdbaee6fc6eeb081a4c6bdb97a532eb1f8a86d34b981. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ARK721000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8174ba9bc2338324bb39b6bc23b8e49ff3a0d40c30e1b060444c585ca4420a6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARK721000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21017148bbcf85f74ffc357f5f65b06b62300d2691e417763c05abf2c170c47b. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/ARK721000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa383a94c60e10a25a8b78b60af7a2c3be672b35be2da7fbe4b9359d7e8e9a1e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARK721000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ee3173c63f84a419cae9c85c38a7374b1c93bbfdf29528e7fd365bfa8148e5. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/ARK721000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47e67d6ace5b17bb2568e8338b57d7f8b138513c336e34973876396b7bfcefc. 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/ARK721200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe260dcae6c0c67ec97fe8d92cbcb658ec78df068f7904341e097d651dd59841b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARK721200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecb1d3a7c50c16859e7ff793002bed7ac82d491dc2ec09ecc862ec7c62d3cc2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ARK721200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08562ae6bf71fb7411dbc327be5fb10993daf44741c0db689c61cec1dd99d4e3. 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/ARK721200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c25c32ccf1aff685e94ed0de1c7759c759890c2aad93bb794312b427e7128. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ARK721200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f934325c5e69bb90545807e4864c0d172a307d0cad4e2320d0111d772862b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARK721200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b104fbb1694a4df6ae07556668966207c9b7cc9b59bd483728007a30faa4f1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARK721200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300e15953f8f733266ef03e6c7695147134a27f388b284978481317efe7717ef. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARK721200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c3aecadf46acd9cc6106292a1e6dd20b9d8b360d6841a3787a6eb881a682df. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ARK721200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881e23ea4d5b34773fe9dbddef49e8566dd8617b0b489ba2729f0e1ccb51378e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARK721200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe235e7baa28175ad10e12c57746e905a0e6041cb3f0de229bb59b16698b1bebb. 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/ARC081500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa920e030fdb65dbfe5d4a572b184dc11c9a24203980412f15bb6edafdb24b569. 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/ARC081500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc75b514fc41a11584f217d549b7ada5466b9cbcc2e2d01d51b79d27260edc44. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ARC081500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7072cf6ce24f00f1db10e65f597739b45bc85304f71864cc9db74c97a3689a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARC081500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d1370e2e76d03f86d1362f59de5b8cc74f09a9028176839b8419224476b75b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARC081500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8523d7cd4848ac3d7ee8e7cc3273e625cf61a9bc36983b8bf98dee6b4fdf75c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ARC081500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbdee2130cce86b5ac4c032afd38f5dd839187e7e0ab7ab9aef6d4115365bcd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ARK721700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab85c757a8dfe98a3ed4434f9a5fd6aa5ca11072572ce69dfeada32860023fa7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARK721700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306c4b3902ad29aee911e554c6717413436049ebe49c5bed24748e5a8f23b75. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ41916556.
Curiosa Exhibición de Habilidades de un Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cadeb9fcaa06aad9a01036fb7bad9225fb0de278b7ce321f4c0e550c0ebcd2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLS2394023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c8726e06a28504ab6f0439bcaf24621108f20ccb32601803143540f937dae. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZGLS2394025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6875a683d65b73bbb0158f180bb4071fa9a34893406e79693f8f855f87c26b. 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/QZGLS2394026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988aba5e024b3f18ab55e1859ed7522fd290bd63a975ee2b96ac05e1222a858. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGLS2394027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110c3ba2c9e725fc657d34727212a59a2d6eda1e1843d78e9105570277f72bf5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZGLS2394029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b03a471a2b0f2016afeba582e1dc7f9c618a3f6cdf1991decf50f2a8885208. 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/QZGLS2394031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cfb9ba56a00da55040ad99462034d139e40e662d2b1c48311250445f3581d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNJX2498790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4741c006dd1b20b9f080299e0a7cc4f6ac99f9290190b9ad587ec34417eab0c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJX2498791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc346384dc13f128cddaca70572fbe8c34fbcee5d4880567d66c9a674e321a878. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QZNJX2498794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c874c703c0d479b5b51ad4e544d99760048e5f6c7d2532106bb7090e6466e. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZNJX2498796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0951e6c506f68e411915dcb85f6be82c07eca6947bdb7d148a4ce203a136eda. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9M2415593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093ed7622c2c85f91b8de60e5eebfd786f35ad12694218dd540477230a60c1f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZW9M2415596.
Rocktober (The Best South African Rock Hits of All Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e880b45c8ee07058165dae4cf5f9d1b7ac6eae619a964842a2f44a667d1739. 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/ZAC581900453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017761a36b3f2b55938c254ad5daaefb29c79381caabeb91b5bfbf2e4a06b4e2. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USCGJ1815412.