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 0x1c667ed99a5955def19726f145162f7dd19d6090c1d13d5da0fd7fb02a83351a. 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/5be92310-fd94-4465-bccf-88c7fc484000.json and https://artists.proofprofile.net/proofs/artist/5be92310-fd94-4465-bccf-88c7fc484000.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 0x9f15414d22eac1f50629efcb8c845a1b4bbeb0f437f22eb9ae56c806a89257e7. 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/UKZGC2501187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b64678cc406dcf9c6198a1101e79b236ff4da1c379e8c346a5843382e4c2d6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:58Z), 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/UKZGC2501504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd998006955bc7e505907f7a0a320d8bde329225a0fdf93f9d486191754b45236. 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/UKZGC2501505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6321a7ec21977af167b14996e4d47ebcb21ae9c2f6dcc13d5d92b2d4b3d99. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKZGC2501506.
Chill Out Downtempo Ambient Lounge Music Top 100 Best Selling Chart Hits + DJ Mix V8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a007d6ca79ae1778e274358b46c6f8b188c51de80d2a769148e01236567207. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAFS2183497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa586bd191aac57f1473d6bbcb16ca791d0520d1dca6552f509771e9672375cdc. 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/NLC731700662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc40cc718f0be97feee3ead8b7e30d3d816de90af845bb340ca43ac1e2f4d21. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLC731800385.
Klassik Lounge Nightflight, Vol. 5 (Compiled by Dj Nartak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcb3de335c13c3bc9df35aca995f97e5f58b60556261c0f387d0e71e600dea5. 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/DEBG61201655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc44c717aad895bd0eea6f93d387ed6ddae9120f378753bb75f425afca0d1281. 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/DEGA20800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4e244ee312ea7fdf458554a4d78330c5fdf07bcf44e06fb9898af194618f33. 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/DKZK51500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6169c39d1048daf0a2a0e9ee03cb76f5e1c74e7248832d7d5e1b7f4d697f339. 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/DKZK51500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae4e786fd99bb0472b9a9b7d95625946ffa115eb791d038a2646469c6c13f8. 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/DKZK51500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c3fac970431751c9e2764d3e63eb6023383f144f32ca93255528337548ffcf. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DKZK51500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ddc5ed76b830321a2c2520462739008d007754f265e3a69f8ffe980aec69f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKZK51500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae95374691e714bb9407397ee608c767f68acf18b7ac7dbfd1d63e9225fbb847. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAR41222134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b204703d0ba73f4ad2f549d37bebd285e9fc151f53839e910caff1d17cc78d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEGA21301117.
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 0x2ecbe963ca416eea7ab49251d5ff9b9813510f4b49db9df82f47f1329e71a278. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/RUA942340605.