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 0x1a9d672651159f434e6be52f728d59ba58ab0f4802f032a7f774e8f868dd9072. 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/144922fa-24dc-417d-a4e2-50af4695d5bb.json and https://artists.proofprofile.net/proofs/artist/144922fa-24dc-417d-a4e2-50af4695d5bb.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 0xd42abd66b66730299f8f729257bd216fca0264fef94324bf2ee9b353ce9db2d6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/KRMIM2101664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c30f1a4d4aee7099cf7e5fad4f1cc1b11e110cc29d26d1d5897171ab735aa. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/KRMIM2101665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2d075cb79e24a2f88bba8ecaee30247b24c7c4a2abf7a37f759d0547d23106. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/KRMIM2101666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75bbbd7080eecf987f06e10ef726270cd121c2e42b05b73895a7bf2d3378f7e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRMIM2101667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3343de010c38e27db1d58dc066e93b27fd837c279d951016784e2761acf43f1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KSA012299545.
Let's meet there on the day the stars fall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10094b627868b526a7022b920e334f0efdefd535b0eee18d0fa5ffb48b771b1. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/KSA012299547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2838684bbca5deedd380008a2849025c85868fde010300d165ac4dba230718f4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/KSA012299548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91dffa4fd8d1e83709d2770ea5183b728535255a9e6290915f634b69f622bfe. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/KSA012299549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b8788a8a2e64771c6c4ff4ef736e2f6436b0f02eac72be5f99c86993fc570e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KSA012299550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84807b5af7ab990585a3c407d7fbdaa2a5b8c936b0615278b5f759493a71fd. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/KSA012299553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc95cc5a830b1ad3cbc43eb54ed6429a5954d10b2f3970e8761c1ab3bf8d6b03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRMIM2337570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4933d6e351a3896b4d911bc9903606830d00ffeca3550b2897df4bd6c461a0fc. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/KRMIM2352204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925e907e3864d80cae0120e34472e0fdd9a8b9a67fa40d73110375332da25e60. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/KRNAR2307755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e046d49bd10f5ec470deb877481e2c95a750deee5a20fd102039f6a16858c8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/KRNAR2334299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4054e85afc5615243659d10f0c658f3503f63454682e682848a08104c0d4174b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/KRMIM2424777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58cca6c09743ad0b5ea503e9bb7f14ad7cb54dce24df231dd157e1b4158efa. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/KRMIM2442082.
The end of the world and his journey are children's books
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb6554462f57da0af3cf04737dd0310fbf7aabea9a7163579bf09754c290fb4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRMIM2454793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8942789b2c0298c120b110d40894546f8547b08b9d75ea06216f37e7da9c5f9e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/KRMIM2464598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ea211dd4d35667d50075b83c07bc9d6a151cc641aeb36d11edb9d216c1eecd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ZZA0P2410025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118b13609bc753f4524d3d310f922ce02bf74a1638761b1648e179030fa6f30. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ZZA0P2410026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d495f8ae9df1400090e7653b24f745ca6cbd207602a79294a936ba0de207f6e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/KRMIM2468172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb752931f31a9c89c5af5bcc223ca6d464bb253ba4ab5ea451590616dd8841af. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRMIM2477639.