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 0x649e5410203f7f48dc267845dbbd57e85aeef32701075333b187d4d031ef2976. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f63386e-f0cf-476a-95c7-b274b846adb4.json and https://artists.proofprofile.net/proofs/artist/6f63386e-f0cf-476a-95c7-b274b846adb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Favoritsånger från Pippi, Emil, Madicken...texter av Astrid Lindgren
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 0x54175a33c0b052dcc3983a4e0038e45a3df73894341c43bbe159f9c1275b02a6. 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/HKI190529101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b6b1a2f139ffd7acff50d9206bc8ffe61edef7a8ee7b6e1eba60577eb8a4b7. 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/HKI190529102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd690eb87b3360c098ee82c62a9666aad482a411ed89dc39aaf249ece5684ab4. 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/HKI190529103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eab35146b903b0963d2d22ace1cf357e040b876cd5ef15e08cd748b2fec9c8. 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/HKI190529104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98b63492902e590781e87994a9447fdb6a52be6c4a3d9eb9afec208a8bb4f2. 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/HKI190529105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897944b71c72687c187260290b1c2bf39415d3cb2cfb592062ac5b7e144edb27. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKI190529106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dadbc0120b975eb7ae5b2c7815e1c722108dfb6caa883848df63389a770be6. 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/HKI190529107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a492bce0373e212ed802fee3543cf127ebe7e0223694ce61cc14becb6e569. 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/HKI190529108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0b0a00c76c521a3690f5bf8142c0aebcac272ba6517090efab922d7b6d103. 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/HKI190529109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc668d44fa5a00880bed71b301cdde0c0978748a126fb817d854a94c22778f827. 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/HKI190529110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6a3fe1269eda20ca7cc280c465688258e55a7facf54b58fb1d89f6598b9227. 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/HKI190529111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffbef4153712aa00aeb9520beb13c0545836be4e19fe447cade6b7509f0abdc. 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/HKI190529112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe38b644d1f5b445af4c889530cc4c14b5693f2f0cad25de5339878e760641. 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/HKI190529113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8f74d62e3b09696f842e4d25e8408a80dd221c56070b61eecfac91b4abcbea. 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/HKI190529114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dad442e9af659f94dc709999d22471e8966215d291e0664036a98462cb6696. 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/HKI190529115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd459f77e329c0f00faa54ad5eeb09eda628605cc40ffa9b598704c751b5d24. 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/HKI190529116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f446ea6e597af7070b3d6f38f0fc554a8426ba7c35358e77cab798d5ceec69. 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/HKI190529117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede86e58d68b3af66637c6bfa01a3e89407be1ac2191fc96ca4cc598a5824e1. 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/HKI190529118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7153718f4df0809b2c7e12caf80e7abd274a8db88f2cfb2688d78748eeaae. 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/HKI190529119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce1ec5e9dc5da5f4c5fe9b7719b49d18a93173634cb275f7c91a09414825b7c. 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/HKI190529120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6695745c86840a432d92b168d951d45b6a838348e1b66d6102691aeecba20. 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/HKI190529121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b60f2c8f6cce4868f2a7f2e305421cbbc4c7dfe16a156e7562a227dc92fdb8. 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/SE6GL1900106.