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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 0x641ea3e18d1f52af704937eaeab3acb8aefb836a47beb26f991f6c8ba8c5cf70. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8069a6c-37f6-45a2-a483-e8366e4ad44b.json and https://artists.proofprofile.net/proofs/artist/c8069a6c-37f6-45a2-a483-e8366e4ad44b.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 0x59807e71eb317ed2441c348f764d8c3cb47c50e4f3a90fe18fb6679c2347cb68. 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/DETB32400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638234068c21fa9bd78bc8c6f29f5d132e23b0f23b456821fb7589b1be3d1a1a. 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/DETB32400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c287143cb5fb4e8471d5789b70bd3eed2aa969f23195bcaf10ba39b51610c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DETB32400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464091521bb6fc760d6de0e961278d8259bb67bf96612aacf3ef81dc2886ed32. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DETB32400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46838ff0c0e34e3a117da0c0d2e16fd8816de97d1a2ed55286b8746fec32ac5a. 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/DETB32400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0ea972ac69d0e749b0e24c72ba552f61c7c5a8006bf1fa2b87894f120a976c. 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/DETB32400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b85218777de21d3f1577f57be8d777b8a99b0efb71b6274ed64c50e965a0de2. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DETB32400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe755afd3d062ccb47fa211271f931e458b3f84df825155a23dbc9d27f5dd7f8. 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/DETB32400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d31b641a20efcc6eb2c4a874d6096a8c1717fc8ddb5515dfdd6ca3e1de0a72b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DETB32400135.
The Rising and Setting of the Heavenly Bodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cfbf2a7b6bec82b6ece06157ea0f5e51ae5cc071a2ec2da9aa84e9218f7237. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DETB32400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96251f4c99f3be45f1bbb11e9fde9c4455e43a868ae8d84e739bfa8b08d0e93a. 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/DETB32400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9db1d58eab420ab6949de3e731592403573c2b761584c2b434be99e7aa2c74. 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/DETB32400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0be0aba31434e75d02a899b070c1994ed3b45ee37eb0885918a2c5772bee74c. 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/DETB32400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27d49e9c0a23f1e86471c10f6e2d693583fa5016858a1ac0cfd7c0542d7feef. 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/DETB32400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94094932526499e2254789b24b72389c2e87875e3328cad1825dd7e0b99d53c1. 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/DETB32400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617bd42268bb3d89c30668274b7d3c3649451bf3a7a36ee9ce8875a5097dd85. 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/DETB32400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67b5d2302bb799b9bb0ee00bf6ebea3766321c9dec1489c83c212b4a2d4b2a4. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/DETB32400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56fe742a77ac7c6ca005461a6b5cd9595e8f2853fab509b9ca7b81c6b2f2a8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DETB32400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbc93cc4d57a3ffd993e924aec4c9bfffabf0e7629221ffbd02e8ae9a259229. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZS642134011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae6347b60c055a1df6804134f6e27e604a2925e7d79973353780780eea7b257. 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/QZS672135758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b83b3fe699daa58c7c77ed10e7b13c435c184b495df1684110955d9d1e8d84b. 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/QZS652165583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df20b9ce2b9eb39056dea0e6673a199711dfd6c1c72486d08b23d8e6f98a68c. 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/QZS672131524.