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 0xadf35bc2cb16488a38aa7e5f43d6c74e864289e9bfdc4d92e8837a77d11b8740. 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/2b13c7dd-c453-4e04-b98c-1df483eb3c3c.json and https://artists.proofprofile.net/proofs/artist/2b13c7dd-c453-4e04-b98c-1df483eb3c3c.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 0x82442b5fa50b1e66c0b4e72296243ef0be37e6a68cf935dff3a1ce990591a0f4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCACB1481914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fcb005c8772f8a7bcfe5328cc256b0cbdc23c77dd36a98bbfb5e64ddebe233. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/PLP331500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1363b114a7167cd7140f929792f4a149983a90bb67709f1e51e97ad85a99b0f. 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/PLP331500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa96e3451a96a3e4e3301a77e82c1cf532636591c903fcda1c63e75c45902b0. 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/PLP331500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6fe580b41eadcc0c2145a337a8099bed136f5da0af25dd17af37a592234ec6. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PLP331800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec67e7e0175d18ea7b7f0e831450105602f66c66268c96155116c8f5899e4c7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLP331800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d14771c9b8d9475bcdb9d7fa61e4e216e8b003b4aafeaae46b4b4ab868b7e. 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/PLP331800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e894de1c52e9465096824ee6c21be784641d0f54e06e120700d4454288787. 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/PLP331800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ac331069cea727321373e3500ab4993533d374fd8ecebe2d6aa86082e5165e. 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/PLP331800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4011e756efe839a641833459043122cfee8b25c6563c47cc2b4cdd66c8b447b. 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/PLP331800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2761cd62e2ef776be54f6a16530f99e26e7f23e6b3d2e491a0938c50d4e55d3f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PLP331800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcfe58e87adf83508471d75c75831a88c5e25727ea7f522ad359085f8f98976. 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/PLP331800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02462559d9210ea2146cf91a1956c5726bb3dbb584e3e3e307bbd832dbefb16. 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/PLP331800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481e8c78ae189d88764209869337b72c19a9ed30c3a5243a17ed00b8338ada00. 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/PLP332000001.
Mother's Day (Soundtrack from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c76381465fa4c584eedd9ba1cd5fa478795983974716a0048c16118984ef0. 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/QZ8BZ2305716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdebd5f453bda91cbe3c35d18ccf8f2839dc8d3fbb735747cd0ea2209f48eebb. 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/QZ8BZ2305720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738656646957a62b879208816dba9f2012272ee53cebc1298459570a95b939c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZ8BZ2305728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbb850b37525e40cda8e816cb31b5e03b0c218e4ca4d825a53294f2bfdb5d14. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZ8BZ2305746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6986e14f56f171e7291c47597e3e6ba9355072f61b3988af75e53f290aa9a330. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/PLP332400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40d1e89f21ed3e9a359e3713c9f31a0527204e6bc8a24444a7bd01e90dcb72b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PL42G2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286d971e67646b77bdd7a8467e0d17131478fce199452e1daed46468c60f087. 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/PL42G2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a985a586d1a71e8a5acb1a355364e6b009c98f5855e2b9d75a868a8183c2f3e. 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/PL42G2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c581652398286c8af8c5b550f1b12b46f372e9793ca0022a9ecbe7f0e63fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PL42G2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094ebc98efdf9a59e3f40b5f7fcd1e893bd018f4e695871423e3da0dc0d4f90. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/PL42G2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6986e14f56f171e7291c47597e3e6ba9355072f61b3988af75e53f290aa9a330. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLP332400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe131800caea3ba5b13cfe5bccfb34c7073134640befb1c19be12d356ea6c21. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/PL42G2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc370a9c888d3960d5752025299663b9f4e9d00e01df529a31b97872cc7b584f6. 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/PL42G2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ee4ef3e13240e87887f85a035a0402f7285fa5e824a843f77123006a52dc41. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PL42G2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fee4d2fc688d303e68c7faf5dce7b77da66023a3dd1ce419202df8aafd6b98. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PL42G2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da05ad947178d8dfc42d38422573a5fddd2c23aa499c958bba0fc21b338c49. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PL42G2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd042e90a78bac0b44b0bf6568bdbef63630a08fbd52033b29cdce023b97b0e9e. 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/PL42G2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3aab74afdcc9c78e608cd830844771e70ee1ae0bf7b1e8b9b036bb36280f53. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/PLP332300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9316c14ef639d496b96c5b2cdef0a857a0c61a54c3435bd78e8cdc6f0ac850. 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/PL42G2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7098f1008d796ec191d3d88b8c6e1c4247237f17feb68950d0b06589db89733f. 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/GBENL1902633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7098f1008d796ec191d3d88b8c6e1c4247237f17feb68950d0b06589db89733f. 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/GBENL1902633.
The Day The Sun Was Made (Zamilska Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2529b27601ac1b79713d1b4debb313480061d294eee2260c3b2062b01928d0a9. 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/UKRNU2100892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5b901ab47423f0096efbe695cc08cafcdeb4393a23847591d37001b3c80f4. 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/DECY51902800.