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 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 0x95e7bc25d750b0c66d2ffc9c664a10f98498d52c1d031c3b8aebc83ba04db519. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f431d94-4617-4127-a6ca-ffdfc479c229.json and https://artists.proofprofile.net/proofs/artist/9f431d94-4617-4127-a6ca-ffdfc479c229.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Silence Of The Sun And The Rhythm Of The Rain
The Golden Age of Danish Pornography (Original Adult Film Soundtrack)
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 0x2253edb8c06385459cd3098786fc56e5a7e879b5e35b757167cf3e3a7859927d. 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/QZK6Q2017737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79daff41f884ee7cbc1deadf6c51bc18e44a34119f76f681bbf5486f72a2a5d8. 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/QZK6Q2017738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a7b58cedf1dcec77c9fdcf4f86fc01f7de59073b7ce081fd5f6a006cac1e41. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZK6Q2017743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06f22cdefbf6477b240c8a8aa50a0eb44a1138a86ceb79b111820cefe7709b4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6Q2017746.
The Golden Age of Danish Pornography Volume 2 (Original Adult Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e89c65b0690c5d86969ef7a53ce6b8e59a5002b18a29dc7499f6bf97f3e0ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2017768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8454ca4cc4af8178883a7696d0f867a1bee36cdecdf81b9800924d03376c4d1f. 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/QZK6Q2017770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb405475f7ca9fcd986e0fa77af457f72fd557b487b18d89c5b8d3881a0ce0e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6Q2017772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf788c632e0fab457c31562e60bb26310ef7ed8261ef5561fbb26765136d7faf4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZK6Q2017776.
The Golden Age of Danish Pornography, Vol. 2 (X-Rated Adults Only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf966efc0164017ec9ba144b8f19a32979037fe2147856e6a8cf2572b5853b15. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ITO0P1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1117deb5ffafa64d4a7d09bdc08b0134cb921a2bab9900910beea80e4e17c79c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITO0P1500004.
The Golden Age of Danish Pornography, Vol. 3 (X-Rated Adults Only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7bfefea04cbd2f3c19f2e41addf40f0b8d41d0b421404104d5a4a33415f8ab. 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/ITO0P1600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda0d28fcab398ccdf3cfe576fec1b08557a57f2d6db65918ab8a63aea3b257. 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/ITO0P1600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a50927b059b38ee282ba48355024b8c251d1bb3bc265c9c324b8faa423b03b2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHN72508802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbf26a4bf099df80945a9391300c4e7a2eb118d3412c2730c6901be14f57d33. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWS2554462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf0c66efdc80f7488dda6cf700437dba8d5404722a57c1e15dcd3e2af17817. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZNWS2554463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21902f57e951d7fefe4a3213dc3bd63f9f29eafbe1e7deea6360c1106f242f87. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZNWS2554464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cebca42372c58d2dbee16ddd1f7f65f87c72f91359ec5470babc205e2b4961c. 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/QZNWS2554466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cc37e741833986710afe4a78cca9cc7e296658d9d577b36881075ee0668c06. 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/QZNWS2554467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dd52ff02bc4ca5e01ba531dfb3296246ba6e47b9cad131e9d55aed6d105d0f. 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/QZZ772551386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15b7618ec3a734a0329f875f680d930968187b46128662a3f1e6026c7ae5b2f. 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/ITO0P2000122.