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 0x055623cc8972ffa4a075bf01926ed79fa5ec2f8cd028af63acd47b531ad66cba. 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/6090b1e9-8971-49a2-813f-336b3ca09bd5.json and https://artists.proofprofile.net/proofs/artist/6090b1e9-8971-49a2-813f-336b3ca09bd5.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 0xa6d9f9930f1c7f1a823509ce8f48c24faf7c14a717ed07adf5635f0621bb1365. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHZ41966656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3835592b051f5c381daaf994d62b454ec144eb279c875cbfe55668e5b0cf6b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/COC011027920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5f9841fcdfa05d075605e48624be4a1053417490b02fa0431644df91ed4b1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/COF019401122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6624054bd3ac053bae8c910ecd2045d59d3e404d0613e332f186d6e2db1131. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/COF019300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe332231d8c0cc721600eb64cb6aee7e46b40f3b9c2b0d69fbb2ff6b88947c960. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/COF019401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb8db85ac47214814409e056876a57d63e4f336b5b3b99979cc1f09a92b6f5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USCGJ1432172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df4d700ea004b8df780b30c961a1cc00bc80f07235b6e25ce6787f7b9b6e1d4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGJ1432174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59306cf61c86192518a7e15a4b01ee93f8b7d261e5c0924179a2397369c2b3e. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/USCGJ1432175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096773e7ce132aaa885833af8112cfbc2c341c2e31db86f1dae3222c5e992124. 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/USCGJ1432176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40e768b460de81d6f27b8c96f146d13dd29f15d444feba09eb7f51884e5937e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USCGJ1432179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288343c59e6f1c3f67074973940d4ddf5f2eed0728a2d5f6cbde8a454c0ac3d5. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USCGJ1432181.
Colección Estados Alterados (25th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cde72919b78080be9cc4f87371798306c4671fbf8f22d4e499d1c8fbf1102e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USDY42158841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd289f8714c8e69e1fe53057c0cc181ecd1808eaefd866d23c555c5032f43374e. 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/USDY42158842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25c431f3cf33d70317aef2eacd14e93e559d82f89a5a41f1f691f8ed3c94497. 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/USDY42158843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07b6e4bca57d4c58ce6ab31a32b3db3d3d72cecea82d19422fd26de7b9f29bc. 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/USDY42158831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2f7c1b70f55b7ff1e02f911e706c3c1b7cfd3553c682aae2d8bab1bae8620d. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USDY42158836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af1375971eceead4f2e59571f4342302d5ba41a7c7b3b6294927a2b011fc83. 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/USHM81809073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5282a07e303630c62daa0a5b53041f2bb88ab2e08cd28d35c070d8b220842206. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM81809076.
REMIXPHERA (11 Co-Misiones Transnacionales de Estados Alterados)