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 0x84f951841bcfe2fe52b2b28002c6a2cb89430c6b19bbded6d0e259b9a505de53. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c9d36af-7a4f-4feb-b18f-314274502ba7.json and https://artists.proofprofile.net/proofs/artist/2c9d36af-7a4f-4feb-b18f-314274502ba7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Preacher and the Deacon / I'm Working While It’s Day
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 0x2e0336a0d4cc2b43e6a8cbcce87539dd7eb3420aa04f2123e23c003f4bafc9bd. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/SE5Q51823695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7cc5b18ea7709b2f6bd995e274cce8b9a70805feffb13f1b815227dcdcbd5f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:34Z), 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/SE5Q51819103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87b985d93853672cb774a49c31bfe51c2de1615d995812e24f0aab7525df29a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q51824360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7616c720a7daf0936696d955bf8695cf26eb01eef5dd1b9ec0a460bb335323. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE5Q51812271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242d1b211d50b4d83dc1636f07396bfd642e26b5ef138b8453fe93ac3ba90d36. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q51808839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439ad6f18f87210e3ff3f3badbdcfc3b70ebc314b2e7ed5405076e17b8681906. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:58Z), 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/SE5Q51819752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d31e78c62f064e6a1fbae99bb45726c8a408b7c03b13be7769831306ad35791. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE5Q51801787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7b9ba39e273bede1fbe3b5ef54584a2f18ddd091d315c4d909a92668368373. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5Q51819693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb3c890cd90995da2933ccbb5bdf3d0d42090e802e448c6c44d077de07d062. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:00Z), 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/SE5Q51819333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9667cd748ccf0259cceed30eb89b2da50bf6ed484ef7a6bae8bceab5e07e9b. 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/SE5Q51814356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea2ce699526d1ab4305fe9392d539d48965f3a747b43565a84add00939ec62. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:24Z), 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/SE5Q51817233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4704fdaf554a94f9cbb327f9ac586258063c904cafc89d920505504d4fbab60. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SE5Q51803472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6177910ee0627f15549dd5189bc13a6bd5f8de5e8f38ed1513750a81191a642. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5Q51810324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb98a2e176db99b539720e3ee99404beccecc2ab615bf402f65f1d2c8768474. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE5Q51803553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28f71ddfc9f1bc333c2072ff7ce316cad86eec4232053d5cf468d031f3384d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5Q51827885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038a88ae20e7617ce741e02f4aa9920d0ed8416fafac034868e38a064d309ccf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q51813959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb58fa0c33d6f4e248024a91d78bc663b58879a412f0727845f1d1f3f4625ec9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q51823709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9efcedb37190e31809da19ffaa97d4cc01bffef1fc86c376f8d0cd3169132f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q51805667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3b9375cca502cd71889e4a75f7089e36c1e75aa1f968671edb13eafbc767d7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q51813192.