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 0x13269a8e82839d5da884747c49725d081bb128e94a1b6828ce5c54ca88d3d99a. 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/18bbcd10-df91-4816-aa8a-c5a3f08a72fa.json and https://artists.proofprofile.net/proofs/artist/18bbcd10-df91-4816-aa8a-c5a3f08a72fa.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 0x926385e70ea38da81ee35800f980c151e2f84ccf460a9734c6b120153f8ce4a3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK1403269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0211bebae052f4fd97d6279b6a60755a8b42c852eb79d6d83a083c7472796c64. 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/SEYOK1403274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5527118de6d881d8c0d77bcc26ce37a6e3aac817d5fe66bd3117113d416b5c87. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SEYOK1403280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45d0caa28fbecaf9ebee3a0dc1f9a1bd5ad94d58321a1f006f13c6cdd85e4d. 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/SEPQA1200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212cfc2c98a3bc62cbe359ee3fb2c70c01762de8ffad0503750272ce79208d37. 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/SEPQD9821010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eebb94ea114f050e1bed5ed27cb75b574f942df4efb8e78b2c72ad409c2a0c2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SEPQD9821020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fa2d9f8955180fb068f0764c0aebbcd7c1af574ec253e9945c34c84946ae6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQD9821030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f37048fbec86b5b72db9b2befc6ea9764b76109b5bbc4267d1a163c6bd66f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQD9821050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f86302c65b5dd255eb0a603273dbb6674a224728bd05191decd0a42807e80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQD9821160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5b8458cc56dfcd3d702f6148bd70687d7f477ea47a0a68c8dc023d3add1807. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEPQD9821130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc2b956066e9fa8cf1a1d613b3fcdc978b0ea5523a2ed94ee35db65cd108f2. 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/SEPQD9821060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f37048fbec86b5b72db9b2befc6ea9764b76109b5bbc4267d1a163c6bd66f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEPQD9821050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f37048fbec86b5b72db9b2befc6ea9764b76109b5bbc4267d1a163c6bd66f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEPQD9821050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fa2d9f8955180fb068f0764c0aebbcd7c1af574ec253e9945c34c84946ae6. 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/SEPQD9821030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f37048fbec86b5b72db9b2befc6ea9764b76109b5bbc4267d1a163c6bd66f3. 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/SEPQD9821050.
Svenska Schlagerhits (New correct tracklist/audio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f37048fbec86b5b72db9b2befc6ea9764b76109b5bbc4267d1a163c6bd66f3. 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/SEPQD9821050.