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 0x3b981576d06fc19a467eabb8152d5a022ed0daa9da806bd5b85b21d40c82eb55. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4936ea6f-795b-40b0-8f9c-d1a4b1de9739.json and https://artists.proofprofile.net/proofs/artist/4936ea6f-795b-40b0-8f9c-d1a4b1de9739.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vi Kommer Alle Et Sted Fra (Carpark North X DR Pigekoret)
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 0xf5a9d1764db12442d5c9caa07314326cd81b8fb6988dcd23ec48552776c20193. 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/DKUM72100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd533a376482c82c4b3f243398afb5c62726446f206d647fb59ba118cfb990. 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/DKADG1100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e187b42809cf7850d4cb7b483f5cdd487cb9d1e4068681c2dcd06201c6a40. 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/DKADG1100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284e1717dfd0f6fe9c7a4b2f5f700ef476169dc517e8709f9154da4b5a23722b. 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/DKADG1100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f5f91c6ab85345c02030ac779888c097a2967c6dc7cad35d3466a8b3f7012. 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/DKADG1100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefac99c4d19ed20e9fe9ff4753c5fef1b73ba7aca7d27970e3b407f2036879d. 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/DKADG1100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ced7ee11779472fb8d39659a446ab4632bc69c311408291970a8a7967a8eec. 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/DKADG1100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd282c471256e380a0acfbd0b35bfaf24b51fc52d12d84457fa5c2a5be0235ce9. 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/DKADG1100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f43f162744ab185ebb9beb435c698d27c67ab57eed6115762455e506c88d0. 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/DKADG1100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825be99df2fb7010a31e7145c42e17317779429ad89ec35844cd1d92861d1356. 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/DKADG1100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e5d3d2e3f9764209453cac508bf2cee720f48879bccd93a2a2dd80a36075d. 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/DKADG1100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d4f2018e4ec4a19c5807913c8d6003c739be50160adb4a5ef6b18621764df4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:49:25Z), 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/DKADG1100179.
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 0x73a6fb3dd38748204504d50eee5fb1bd5c6cbd43be837e95930ea199fcc4cab7. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DKADG1100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ed988a1f1a4bd86f0ed3ea5c6554b4fdd6ee2630e54ee8dd30ad4538ac19fc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DKADG1100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcb637e73f51e52470402421b4185e750ec32a204676c7ecc3b11eb4fed544f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/DKADG1100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecc77bd0c936ba290dab2120dd8a3be9866c3699e8073b05a02cfad15b9b4e. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DKADG1100187.