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 0x2992800999965ee92c04209fed4de31b6bfa2f142bdf774495a91ea73ec265d0. 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/65c1d139-61eb-43c7-b552-64e1c7379edc.json and https://artists.proofprofile.net/proofs/artist/65c1d139-61eb-43c7-b552-64e1c7379edc.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 0xcd460940ac247d520e957a2bd5ef32f429a7712a4184580b078487b0ca4c3b7e. 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/TCACX1724172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e55bc2f35668d2d694d1bc66be9530a736ef20328dddb4fab5b272c5e0d48. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCACY1752863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc35c34911c6fb851ee6b843024cf8dfe76d117205ff166f2490b35a33ed32a. 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/TCADB1745702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3519a5158425c822b455be0f3817ec903f75b24742de6071e78b47d470750fd9. 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/TCADF1725516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c9eff8902e4a151bf3ce1a2e437740b4df4da02d56fe7c8a67fb35ff28c03. 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/TCADH1751897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71403dc35ce31a715ae0c445af98979bf5d5c224dbea7ca431a092b324949a7a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCADI1724426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b10cbce3ae2d88751a07663c870ddc9ae4f3d5d773a5efc12eb903c87f3d7. 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/USAT21802038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5502c1799dd15ecab04d9c1892cf9870584c7871d9a3cf10e7d2f9b362c8e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USAT21806617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff90b8150c5f7c19769364422e5b8349b0607ea7a12a789d5d01842cd35ca611. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:37Z), 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/USAT21811287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2ce4c03a7774229af55ac0e4b57d1db1a31f50e05e375b77538e0e9eb01eb. 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/USAT21811288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd0649c90163de05c1498912e81cba9f13f6ba50f62dba4daadb4fd2e453889. 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/USAT21811289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fef07394945aa90c02d30fc8324cd7028c13de5bddec08a13cdc651a6a4c9d0. 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/USAT21811290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5502c1799dd15ecab04d9c1892cf9870584c7871d9a3cf10e7d2f9b362c8e. 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/USAT21806617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11f678bd35635c97d1fc6f2b1d2a7e64060760cb7216ddcf6686ffad535e95. 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/USAT21812945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a78d5711570d1df61aef81114550059014ef46c1debab4517d5236e7d3cd91. 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/USAT21901882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc52a2e44acbd43b313add235e4110eb825d9b2964be2cae149d7143fe55cb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USAT21902462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a4d3175dbf489d9a93bf01b2e27260f278d0a20c9538851bb284db7f79d0c3. 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/USAT21902785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d498d095596710b5fa65aef7828ad0eeb8edafc8a1d306c6e9215511adb11f4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:48:18Z), 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/USAT21902715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2540f98b6ae53061326161e393ffd44fa9380939669c1d4a8be9a3a5fd19d. 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/QZJG51942087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578bcb3c21e8a1fa2ae4897a32c0ac60db57df18fb2929a6fb7e48b9a49d459a. 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/QZS652156585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e54b913a1a949b70d872c73bd0342b7c669e5b20c42b36a0c9256b518d6e3. 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/ES71G1917234.
The Hills (slowed + reverb) [feat. Blake, imallryt & Future Friends]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038231fbeb011db0853118058c9c7a2d6a851235dd3e3a5e4ebc1ddd8a58bf96. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZS642207291.
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