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 0x6f2295aaece5a08fb46fcbc097db630a3fc3779bbff385b65cd2bf56d06cdf16. 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/52628741-7103-4d17-8c2a-e5312a5037c7.json and https://artists.proofprofile.net/proofs/artist/52628741-7103-4d17-8c2a-e5312a5037c7.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 0x1eb2bebe8fcad43ffa6a06c1080fee6df48ee6dddc217d0e320e86e515c32776. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/AEA0D1800569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e79b702f57e4293e2ad2d177e4d95d34bfe499f794d9320c1d06fd7b8cde35. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/AEA0D1800573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9193b6f20c03dfea995922c7aa53dcbd1d4a75c4649954aec4c4029160c114. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/AEA0D1800577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e25236d457a2ffaf0e41c2d20c4cca1181f76a0332d45b467da63a6de86e6d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/AEA0D1962437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda62e6cd77d577a5649deb62b412700ddc7dc0196c9677afb2e902b07c7c7c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGLS2079311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136a44fa6a3e95f12b7302d15e2b11ea9e4712186c74d98595bf8dc57df4143b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZGLS2079313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12242463cae3c96fdf72027565d7e2cdde2c0a37278b92b59223b5837aea281. 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/QZGLS2079314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dd0b98efc5fa57ca454b82d2dbb468ecc7b0dc4c550291365d1659cc0d2c90. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZGLS2079319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563ca0029d77775155303fcbcfd78793d5a90c5f7806e2e55adacaa01a7230a3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZGLS2079320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c743d17a00e9f315fa8145ee9d1f03ef61f427fe5450ba4e39c21189883eee. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHZ42037081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319cf2ea0ac921bcd8c6061bf935d21e2a42de3f34b33f4c4e240f57bd492f09. 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/QZ5AB2176421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd210534b5ad906f25a12d2aa5ff9a1b2bcb8eca5532b2139751fd40d910898. 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/QZ5AB2145280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13245bcf21fb60d3bf76b1de8fd737ff98aa87bc0af3c807809447564f2878dd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHZ32100991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8f00089077b66e6eb4f352d0577dd5d24bcc86f01024c02abbbc7f67338110. 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/QZ5AB2206758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3abb2554f38b3c71e29696ae8109521af7554579934d342487b18e8fa82ca64. 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/QZ5AB2206599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba9c8168bcc78df027a0237091d33a23b1d3778be608071f912afb352d9be2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ5AB2206701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ca02e4e560a80e557f62b22c8c9639da5d067772d06ad8546ee948df6ec362. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZMZ92209497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb229543d884e66f892ab64c96843e4f34001609f349ec10f3c8853c0e8cd3e50. 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/QZMZ92209498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086837d7d861db8df006fc18f048ebd7d5900c4990bd3664f0d605530bcea89c. 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/QZMZ92209499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf5bee474f74a7113ba7955d1a001694bcc546e04f96ba70138569469233a3b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZMZ92209500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2816580828440374f0664d5ca7dd9f15525b709ec9cca9ab2f7e85a1046632f. 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/QZMZ92209501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c5a0ca910121e274bce650c66cf696c5f65589b3e5a3626a69e8a661c0d971. 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/QZMZ92209502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de24d166497dd5dba784370b65a08828c62b8ea594262cb984ed102b96b1bd5. 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/QZMZ92209503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab8b698eb964be0825e35cd327550e4810d4a66de43d8719ed6c0a1314e5c00. 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/QZMZ92209504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2691ac081a134c408b6213ef9d447d000be28f1fb71639ebdff52bdcf9755d27. 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/QZMZ92209505.
Casaparlante: Sativanderground #209 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d3e6ac02ef2802b14eefce8c39b4be4bb5d3757c50ec9ea8ec95352ef4ced. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZNJY2354631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2b7365bb176ce6ab24829fbcdbdb62cfc4531e7bc30f7061bf7826f281b03. 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/QZW9L2313044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877fa499c752ef5c2015dbd5497caec7d682d4ac52e020f6fc7f73d978327027. 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/QZNJW2494378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7ba663d518e1773db80209d2ff2b3bee5d80df6fa445894bf7dd39befeced. 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/QZNJX2412230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb5029eac88cbb7ee710e3845d212decd11c51f1f88c7d421d9a4df1c33d373. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNJX2413053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c53e24fbb632783f3d923beedd94614875094618d39a2bae27f92c1931dd4e4. 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/QZW9K2443812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889fb39c9d8085a7056049a6da4fbda679c6a1c8498d0d7230c2d0bc1fd4549. 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/USHM22363021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b41a1647de1da5384a799a0b44e19f8879d9c6628118ea96b2beda79d1ccf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ51951425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7c782de312b9ffa1879270d14e92ece30cba30fc094f509d3dbccfe05457cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2331634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b07ec11f61c1f60b558d7d9a4fe584c6705f057c2406268b06e4573ed379e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2331518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd941f6e8992f9af40c9f2bc49ec9db57ae8d6bac0d18fe3c2e12763ba381d14. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNJW2362776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2459bcfe634e4ae05f5b1acde80bd16636dbfbf1d216aca1405a802aa1d73f8. 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/QZHZ62180288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0a9504d2b268dee7b1f953732f40f80c3abdd76cbf4156c9ee6a37d0874891. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZ5AB2482043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d23e0c77fb47fdd27bf8de5b8cf96c57630bdb57b69dfe82d10a3722ba0b17. 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/US7VG2351711.