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 0xc10dd4576a8599af88b800cb2be1ae503ecef1e0f6eab38595464555fc6f0c65. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac37ff60-19b5-4edb-b739-60bc2b92fecc.json and https://artists.proofprofile.net/proofs/artist/ac37ff60-19b5-4edb-b739-60bc2b92fecc.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 0xddde84fbb25ce9b5eb1b204f2cad480a975469c14a0f8e4b3e00adc97e4c6716. 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/QM4TW2021070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348c5663269e1f1c21124db5fe4b6de3becb11e51b10d8872f49db2443eb7539. 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/QM4TW2021072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c1aea0d033cbeecd18a83d839ded549a6aa2123a984e4af0b75cc96400d81. 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/QM4TW2021075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d6aeeddce0e73347af0108c868db391019ad3676bb4eae6205d3545bef802. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM4TW2021068.
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 0x28781359bdf6bbbf6b61e1090fa35e1e9a84178abe7c8fd878d774893b918b1b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QM4TW2021069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f27284a136823cc1187a79858658be0d929a9f1701a1fd6deff44ee7f41d1d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM4TW2021071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6119031ab833a12921ba13d05c5a406981d5bb8bd4dcd92b7ff9f1a3c60cc0. 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/UK6821805651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a6a329f10b04a8f59fa6b0d8469b1399998aabae0dc94e1e389fc5de79819a. 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/UK6821805652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c08a59f9a4dcbb5f60bdb46385b17a980f256fb1519c0ada117d5cff2817a8b. 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/UK6821805653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a812804b74a13dac2a0cc1eeeb3a0f22d2305eba5b311fffc6b5e1c46428aa. 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/UK6821805654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096b0cb3d5f190da7009c298467d9e1db3f040a9d2bc57639e35db9a6eb7cb9. 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/UK6821805655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c3bb6f05ec05f713dd07deae1e2805ee80eb94b1e5ed096e345c899e233dd. 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/UK6821805656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb08e1743b873034b8643a47a5bb8cd5aebaf8045e0437309c64e592b6d6f5. 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/UK6821805657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cad610d0f886d35010f413b32c5c10bb7ebbc597baad243dbe7f2de0cfeee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UK6821805658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566a7cbae8a66abb1040c75ea65902145c0d5c475cad4b7f3faf18b3f3e2615. 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/UK6821805659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9491964009971d8dac6d8406b27c0fd2f547ad72ffdd7150043d714254550d3b. 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/UK6821805660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012b88d4ca754f399adae38005621c47518e43924d38c449412f0a4524a726b7. 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/UK6821805661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ab10f02b753e9146511ad5d8d55c0e4b26908d748648c71ada8ac615d048b7. 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/UK6821805662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e869bbf71655e557a03382e9dcabcbbbeb219156238d106032561048077d4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BEIX81900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ef75e6bebf100085faac2cfac014cb4b078d4383da434571f83b449bab13e. 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/BEIX81900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834924199a3fff03fce02a563102556de0795fe04e2fff28198449e94428e5cf. 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/BEIX81900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba126e983a196c02c156c6f4743f3cd5932f2c644ccefc93f52ecb893f8e001. 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/BEIX81900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378fe5118a705daa282d1060bf2433a01fa934aba740bc76898fee8be1eb075. 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/BEIX81900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f277c30de02d21fa8c6d62af667fe5a341400518843b1cfcaca34d508a59691. 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/BEIX81900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e05203137becc7c6ed180d92a3b569db312d5f220d256b3c4cecec90c4ddf2. 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/BEIX81900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328a532fbff1aecf63c3b549abfe75510dab65afbf5c70eab9598bec8f60fb8e. 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/BEIX81900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929df0cbad5d92f4129aaf14ee2fcedf7b1811eee10eae6c7b2d9c03b90ca339. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BEIX81900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194252d5217216edcbf29c54133e9b83f78063eb6b8e8d8ab65c713873b87d6f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BEIX81900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43955ad9d6765c6048f9c7930e492478a9d38143cbbd65af9f5d953857da26b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BEIX81900094.
Underground Belgian Wave, Vol. 2 (A collection of Belgian Wave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69991f9e3315e7b2013a80d7d635470675b2ca5d599e91e97c2dbf0d4e01329. 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/BEBB72000329.