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 0xa451b924b61728962679ae06c90636c21fa5cfe46a7d76b5170c69dc0a989b1f. 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/d88e97b9-eeb2-4f6a-88ac-d762a69bd66b.json and https://artists.proofprofile.net/proofs/artist/d88e97b9-eeb2-4f6a-88ac-d762a69bd66b.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 0x6884ae26890dc1b22cef33abd20dfe02700949d6cb505f9249d9a8896a2a05a2. 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/SE5IB1800489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39850685c77012dcb9f01805bf79cf1fbf248ba7f0507f63e3282a4e030b4695. 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/SE5IB2101655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847a6578c11e825a3d11ab27ecb4cf0ef2884b1ccd28dfab14bc0234f7aa813. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:00:24Z), 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/SE5IB1800493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a08140771e3fc8e43cd1154e3782a386672ceab53a7ad99affb4a96e1533dd. 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/SE5IB2308054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd5f9060dfef56964161919d83a3667b327687a22cdeea24d27b4ea4c69960. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:50Z), 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/SE5IB2308057.
Tranquil Escapes: Gentle Theta Waves for Spa Indulgence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf45f494f55b21b3247c2b8e98479519ba69d89593977befa8e3e6767fe851. 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/SE69Z2419715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80cbb249e5017ffebe32db1aa0ffaedcc109beae01cfa3343ab1819c11e9321. 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/SE69Z2419759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb286aa01b1acbaa0c613bfad6acf076a7647e3e9cae0c017528ab9735f3838a2. 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/SE69Z2419763.
Night Silence Music for Sleep and Calm (Number Seven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e551585aa6ec946caa89890141d81bffe93bd176d201816898c814426ea082. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:43Z), 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/SE69Z2445031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1224b91e1c920e5c399f2322ab50477c6cd3ac7457526d5b3f7c449559f85197. 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/SE5IB2204817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ed021a7a7076814937ff9a399416b4722ab13fb8925d3a51bec8b403a37c3a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:29:27Z), 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/SE5IB2308051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3bfbaacaf914abe4799ffe85bcb2f364fe498fcf41c3c3e4f3edce0b83b5b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5IB1600534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ac4981c55e7bcd005585b20df04e48af4fa9bc5e6fb99e6b18e49490dd7fd8. 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/SE5IB1600535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1baf0923cc517a95ca3594dd59f45d1f19477eee5625d1c8d4053955e5d2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB2328975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb950a58b53506ee4dd1fbd761ae8bc97aa49a49ff71779e7ab3768220d6c165b. 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/SE5IB2328599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d4e838792cb773bdd32135d379da71b34c9030177c9207d8acb96e6aac63f. 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/SE5IB2328607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40957a38531493bd424c4677696f642bc7bdfe0ce99e2d94279381e802cb9c4d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB1800494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d222a7a94b657570728f1f914f3e999d57375d1b30a1919f416b5bfd91964. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5IB1800492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f9b474ee125a3cf038375250826cf87dd57e56cf468eed3fe18c51787a97b6. 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/SE5IB2328851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b649eb4a95d60cbad2bb6acec1673a6b2a1ed0058560f40c61510e7d7f561. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/SE5IB1800491.
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 0x50a18908bea54472d7e32746c0a63fe2af7f3a8e625b2b0b73d6ef418f3dc078. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE5IB1800496.