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 0x06b081096040e2ef9040fa81d2eff7cfa0025b4a7fffa81d2b0ccabf56116cef. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/763f84db-1ade-437e-8d6a-2ba36dedf6b0.json and https://artists.proofprofile.net/proofs/artist/763f84db-1ade-437e-8d6a-2ba36dedf6b0.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 0x3862407b7dd8ab061732fc92891ac8eb1a74a65f699fb018ee270119abe02611. 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/PL29Q2192524.
Sound of Relax Music for Hard Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf200814aafcfd68bbd1ee60f5991e25dbc1162e7101b4485264250bbc675c08. 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/PL29Q2192525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3e5a56808b112db47dc426d27e0bd4e4202810b4a31c6f23c083376959068. 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/PL29Q2192527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca2687cbdde258ff13844e7abe9d83645db38cc2eee975d426af49db5303fcd. 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/PL29Q2192529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93014a127aa6799e722be0faf50b0e41a0af42c08430fa4c0c4cb5a36b4f0aca. 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/PL29Q2192531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca98f2195aea968c4b33d38ee87c34957bb04263499fba49ffb7870b7e7826. 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/PL29Q2192534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420341ff500754c0a3deedf2c1a13eed369a31be2578aa129b2ba1295be8fb80. 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/PL29Q2192535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63763ab1d07698fa7347baddd64b65fccc7f3c7e85aa6a3c310c52603dbd94de. 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/PL29Q2192538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30b441ea5f596ec59e541ded92c54229b329e31c73806cf4eb523e1997161e. 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/PL29Q2192539.
Tune of Sleep Song for Ultimate Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64755bccfd08913f2dc327c308e671996839de86d9fe1aaebdf469190f6717. 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/PL29Q2192543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f36a865c932d96a97e4b4e3117c5467be0132f0959e5b155880185eb662e83. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PL29Q2192546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd75decbfdcef52430707037ce4df8c918bf9a8601dd770ee6ef4c802fce83c8. 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/PL29Q2192548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4787694ac316e33308110a2728531a2136870987962c93cc2d2f900310a6a35e. 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/PL29Q2192551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a71c8eaea33f361f32f540577e778b6bfb00b1b7fa94d93c30102877b06aaf. 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/PL29Q2192555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d5334b1a38fe20e3d4b93d2cf5ef6da20149bbd333b02ab62c93589368f7f3. 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/PL29Q2192556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8efd48f353e57b211739089827df37ec2e9fe6960134a490c474f59b914ef1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PL29Q2192558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835182724b65bc3127254a4fc48b70caa35563e3d8883b0886b08201228f940. 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/PL29Q2192561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777cb233e137ab4c984f000d3d8319413c466b1fd17ed4764b9e09dc59266870. 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/PL29Q2192564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0915686eb07511e74e09d15ab69b030af3af14f3d4f55594934474a6f4775a0. 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/PL29Q2192570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e9de13cebb56856823cfc9ffecd5aeea3881838448011095152fdba8c2fba. 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/PL29Q2192572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f4c9b2b8cd39df731c7ec361f8fa035d0e3efe9521ae595ce71013f97dc947. 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/PL29Q2192066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23139e3789dd0fae1baa6be5813863633975cfd52cbdb46f9f9a627c6a07d0d. 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/PL29Q2192071.
Joy of Nap Radio for Ultimate Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d19693efbd7e1ae8e59bf43fa263b790386212a6cdccaa61610a2fe3a0c72f. 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/PL29Q2192295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84280ec90412cfdf30a1ca8b0cdf14c454b15e0f3d609f4071965131e41b99. 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/PL29Q2192320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c569a5768a60171bfa40b4a675bbd92848011933351fde0ed93f63ea80c0dc. 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/PLL821900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468effd6efa2c6029be6541ffed546b9a9e13f3f1e4da83704d73afab2f6f694. 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/PLL821900818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e14a6f5353e24d1eb5e0b9c221207205862360475b02536021979d86783886d. 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/PLL821900814.
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 0xf389bbda0686248d043f0ebee1375e595459b5d99eac795f2eb0e759bddaf60a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/PLL821900815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd21d0bbd5aa75e74d934fa3827ce0f5ad4f737cfb3fc07182524229ca7593c. 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/PLL821900816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc3b0dddf5449e7174747af3a72c907e9d5fc627708c3cb172a31b75a1e7f93. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/PLL821900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599256de7c8c6ee5b6a69202d08ded874bd910146759540f2e1c9b02c208c9d6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PLL821900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14878d1ac85cc8ee4edf2bcf797196df4c50d95e565274b3dd9b449be87c473d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLL821400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c088792e40ec1c28af5e001be8b0fde9cf9c9edc310b3df3075799ed42fd72. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLL821400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4973592f362a1582c3a2ec71f1c1dea2536633aca699c28f00b8df12cefbed7c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLL821400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3adef97497ad1286362127528f7103baa6fd779128714cf0135800bbcfdf97. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/PLL821400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de36300393b3c43812ba5bbcf080e57b5954d508b3874d8bdfaad9b2c1961bc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/PLL821400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd83ebe047f884e31d3acef0b0cd6a2a233d500b2dea4d904c95f3bdf06a026. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PLL821400027.