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 0x589747d5e48e42ab967de63d0ca4ff7750ccd7d36a9c690fede92507b97c6eb6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/751dbce6-1710-4ea1-bf2d-e0cedcdc2559.json and https://artists.proofprofile.net/proofs/artist/751dbce6-1710-4ea1-bf2d-e0cedcdc2559.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 0x6c7adc9f7fa191fa2bc953bbe75d1ae5f77fdf3f9daaf7d143db671e63469379. 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/DEY472374658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee8ed97e22766bb410a4a8faebb537fc9b2f6f38b9c83599930534d485a5ac0. 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/GBKQU2395400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd66801740f2cc3d8bb9151fe83e76541ad90a755ad2f6006aae28ec20b6be6. 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/GBKQU2395402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eae9488e97209ec703c76b54dcda4eac06c53799aa7a6b8a5c2a1587ff4df0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBKQU2395401.
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 0x287c8b108914186bc5bc5647a60859e574a50df9fc94d1064ac769d847f18ebc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBKQU2395399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5104274fbdbef97a5dd9434dd37d8cd43290c4d3563c8533c92d78bdc9d10f. 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/GBKQU2428539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa7006b136ee6e69c6d298d241ef1ac507f71e97a70003fa1e2e4a378a3e264. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBKQU2428542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114199a40a317ba261308df3b7a477519c160b83085fe380470a3b7f6c12dcac. 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/ZAY592400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f85a0d2a89b23af6b318ec499f95cfe541e08c39751daa02ddb6570921b33f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZAY592400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2b306bbcf05a23c5103adfda36eb6a3a907a1c5a7b4686923472b49ad0dfd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ZAY592400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854df1a3bdfb532527f437c735b44f5633b0fb366f76fd7f97b67eee491b0d65. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:14Z), 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/ZAY592400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b137076dff00f5de8485ce9a267678fc2bf6549a3c5b6a9fde10e596ed934e8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ZAY592400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eaa50164ffa0a7240fe5c45f004ff1eb5892bff862e293ade6880c19f67b35. 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/ZAY592400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01d3495ee2cea7263f1a01007ea4a7447bb800c0d15b67facc13bb3885f940a. 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/ZA56E2201401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3259688014e3e17f9a44e4a53d7f85a3062fc08576f53b8e83ff3dc4242b57d. 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/DEY472379816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c24ecb723b5a8ac2d89cb5bdf4b22804b77dd4e32b097c183594676eb82f6. 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/GBLV62309666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0abe73796d0c5cd7d553ace4a2221ae8a04a980447b4ae9aabf18178aeef068. 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/ZA56E2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e9c516c5b3f3280fa145484652ba1b2065ff70dcf3069a956ca7f71a0c01a6. 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/ZA56E2102034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0784c3917079bcd4c7f3821c79103170b52eefc5792874a2fd753133d3f8d0a2. 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/ZAG8M2200989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2425172dfb79f6160e0a495cdbcaec9aa2e8f406b2a0d0756fb7136fd3bc6a63. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:24Z), 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/ZAG8M2401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f546e82f808e67168c6058694c6f4b28fd8cd092d676c83337f3d01b92e44. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCAGD2252266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0da63ed82474820d2936d7b7b5aad640d65ef579821c3557669a7f7c09209b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCAGE2267236.
Silhouette Sounds Vol.1 Compiled by STI TS Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f35a6ea02b08e0631e5cf5a78fa984619934bffaa8d97a8be9438dfdeca1ac9. 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/GBRKQ2284072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70434582f69abc6c1bdd8c4c521d54690cee566ac40b845e6c765e717d5d54d1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ZAM142400392.