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 0xa8ead1068c0570f54d2c65f81ee7449d07b0bf5f0258fc2447744116bee23f3c. 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/936493e0-2eb4-4e9d-848b-51b38d52240a.json and https://artists.proofprofile.net/proofs/artist/936493e0-2eb4-4e9d-848b-51b38d52240a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs About People Including Myself (Deluxe Edition)
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 0x351593e5bc9ad07a85954f36e8860ec2bf3074e01ab2d524f182645c67ec0b36. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCADX1818134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cc972da3349eda24f0cf9a8a444cfdf8f885e1f68f60d7f783c8c2b870bbe5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:39Z), 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/QM5LC1900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f197f1e6164fd6be0ed1b704cf1b68030676be05c891eb872c6ccfec4ebb2. 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/QM5LC1900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db4bcc70f441de75d9f4b5a7a89d7707b2f961c43ca270c626f53b6f62a240. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM5LC1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b12b2452fafab5214a74734c136f026009c270db2a7b1b1765f5fd1603d5f5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:09:16Z), 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/QM5LC2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1da53994300a3c2e70b280dad8912454ca7e4f7a3b71008ecbc457d87cc55c7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM5LC2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c008fabc51ae47f156e795e0d91a0ea56a21f80e26b7ded52eca9413d472cb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM5LC2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436161e1fe698835681a887f47c1685c4ecb416f87dd365f250edc6c60334534. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:32:41Z), 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/QM5LC2100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9fd7b5bfb62a5851e318fe7a2ff37863fd53e43887cf546da267c026fef2dd. 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/TCADX1818138.