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 0xdbf62c3e1ce6660162f72f091579be2ceaace40053482f21d1a517cd486fb60f. 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/62792eb2-886b-42c7-a597-0d3cd0b197a0.json and https://artists.proofprofile.net/proofs/artist/62792eb2-886b-42c7-a597-0d3cd0b197a0.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 0x18f617109d247aed77d59ee5d153f89da0e8d387679fa4ab6b9d05edaf774f59. 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/USLQ21480039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b14756af009699fa28647c00feb7eaf3307c07ac88092c6349f6e64931bd70. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACN1657689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edce59a0f2cd7948778d22f38824a7e22794d740af4de87868f44543284d709. 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/TCACO1617571.
Senses - Single (Headphone Activist Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e9a2d811a00c9f3a7b2ca89799ad900b0bd033f0188a7a9d87ebf926e65dd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMWZB1610151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e45a25e6c94f092a30df7f69d147f6197047d84ce961f13d941d8774ccdca. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QMWZB1511911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aef0f456cdab080dbf21d5fcf107d46cd5efe9be66a6d27080f555966b34bd. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMWZB1610541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da441985f2c82a22eaab6bf0d60ea67b74fab30f33ac2b1209b5e2809ab5d8a. 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/TCACS1679204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadea1e6af6d4c11497a58fcd82ff7044b326175f92620a21a1d5934d938438a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:18Z), 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/TCACS1675173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b138d26adf22af4508bcaab03d70cb4398362aa7fbbd006640c77f099015f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACS1675174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6b65521628eb39f5ee357d4ba0be60c29287077498c9388b5ffc0e0d92dd85. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCACS1675175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfd3689477b5ce855904ba6ade491972b23c36439e58afa3c85560588c0d315. 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/TCACS1675161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463baaf2884d3d1c6290b26eecb290f25861e2f19eb66140e5a2910af5b243f9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:27:50Z), 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/QMWZB1611678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173668a4a279f5c30620dc6be97e3752934458919e3ce8b9a3e21eb0d2b70118. 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/TCADF1726795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77098e68790d308c38f8c40e5f0ea34172c41ab9e493951495159e68efb8128b. 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/CHB701800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db6550c9b3aedae5c3ce6a0f8977c54dae90c56e6174558d6bfcd40a9985371. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CHB701800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6f73483826e050b5be3f14fea8d7752c800f444ca59d05c4dfb98e6c04e79. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CHB701800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742904e204eed9a3474990d6a174e7d959adf6da856431c26142d906dd4ce012. 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/QZFZ61943217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd5d33b26b810ba861050e2cf286028bfd39caabb55e5218f677880091082e1. 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/QZHN41959960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee526869a84cf10dfd15726057abe0977add5de8a6b784d952d4664a20e243. 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/QZHN41963098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095413337a170ba2dc89d2e14ed2af8256cda693de482f0b1467f7866ef64f9b. 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/CA5KR2227641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cf39d1c91f17611b52f12bb4087cf765af5f2c587b552a74aad6fa9b077665. 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/QZPLS2326703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b7e8f8ef0f51e935b163b415d5e8d69cf5e7df72179f415d2c01f44d3a64d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQX91800328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a9cbc57efcd187cf4d3151567f7aaa3cb131ce60e1cdacd74d003dfaa551a. 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/USDM32019210.
Without You (feat. Prismo) - Made By Tsuki Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24323034f5908bbebaecc2d963981f07a43465af1379e406b485c4f560826605. 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/USDM32022930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202bc86767136ae3eabf5c35b226be71ea7b414c4d60bb5cff11e325d32db6d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USANG2115009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5409ab8f39cfa111b3926ef301a10e718a455d005d6c92e4c5d4f2d3fac1f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD1700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32afedca403b07292503df29e37f951dd1e3394251b0bad36ae946f250c0b9c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB2LD1700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78f4df3109cd63e15a3b26eac617a439c37cfd7eb33f970b05fcc85c5d0358e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD1700073.
Without You (feat. Prismo) - Kuur & neutral. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c5adf1c4894fe1b65d1c73b561c3b900f1778e96ce684ad8c504bbd58235c9. 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/USDM32022932.
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