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 0xd4c05aaaecffc0c09d9cfd8e70f342560e4d39318fd97235cabb1a98ef3b0d2c. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3044b983-2913-412d-853a-d4a2be433a78.json and https://artists.proofprofile.net/proofs/artist/3044b983-2913-412d-853a-d4a2be433a78.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 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 0x3a2b34bfa89e0fd00e370625a04bc4be806ec2c5cb80524e05eecdfc1d37fb21. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEW872001891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a92737524f9dc90e5dea183428678196c6d3e022d31d90d322f4662b67b4b31. 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/DEW872001893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b372a928cd4f05dad0013c5d29368f20b9b5f2caa92625a84292a93636ca2a. 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/GBPQS1800124.
No Samples Were Harmed In The Making Of This Record
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d5a79486ead4a0cda2c288f1a897e1c29981134510f4556b1c1746f881ebab. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBPQS1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4cfb024436b1dff4ba422cd2864f9fa4a036c112c6cbabed8564baf40ab0ec. 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/GBPQS1800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf48606bf52a6344541f14f92e6da8d2286016470fcaf844bce99719b9a3894. 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/GBPQS1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a2c768fd5ffcae40080e767e100db691662393abfd95150a41a852d5795999. 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/GBPQS1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5256531085731550a2e1206cf9aec5fb85c61160df1f8596089d913545a92b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBPQS1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f38b80f658ff8a50f2e197ba7c64a894fd2746190937862a978e92b8a950a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBPQS1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe67a9911a3c988c1a8e784c97b2efa4a6f78d247b6c54d4ec7a31268f042c48. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBPQS1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4edc40c9aa2c516c744e10414dcf09352f092818b8dd67ddc80d7bc4558fd25. 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/GBPQS1800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bdcbd1e96de50a278107454ec2e584c157874ece7d9a78e8efca749a3ff7c2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBPQS1900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c26f5afd895455cab19d469d9a1c4649337e5ea0dd4b8cbb1c171c8e5e4c8. 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/GBPQS1900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7da17b849fa048e15eceb73593d8ac126a1098243d003a9d37ff8cfceede5b. 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/GBPQS1900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a3e97f21a91414889fd7ae08296b68789cd1653a597401853f8061f92ecbf. 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/GBPQS1900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b372a928cd4f05dad0013c5d29368f20b9b5f2caa92625a84292a93636ca2a. 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/GBPQS1800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2bbbdd9f46f417bc1a613109b96bff27e31f95307fd571fe8b9cd8d238df3d. 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/GBPQS1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4f3027abb41498d55f5a47d853bb323388de6fe0ae1dd5ae0dc1a3c5495fbc. 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/DEW872004637.
Best of Kittball, Vol. 6 (Extended Mixes)