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 0x7af71265c9cee159be3829be8093a406f219a9c3b8c8f232f11e7fb5a3a4b7b6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac439859-9210-44c3-9281-9d87218d3696.json and https://artists.proofprofile.net/proofs/artist/ac439859-9210-44c3-9281-9d87218d3696.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d773c8e1580319c516e95d964bb524cf5fad8db6b8144e297bd035405e39d7a. 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/RUA1H2430976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c989c1714557ab2994a84555c5ac4853d02d139ac580877cabd17cca980eb69. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:10:07Z), 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/RUA1H2447962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3ed9b870d9a4be196da423fae33e2a0376ccbf259518a7c385a49573b513bb. 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/AEA2W2407586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6827e27b5459eb12467d8593c1fab9065ea7f9410bcd07cf9b3aec7d0b3f297f. 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/AEA2M2424415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bc6cde34b89d6bc91d1fcec4256732f716961417203a4d8e4301c7ab989a56. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/AEA2M2457204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa2e51bf4399f728966ebc6587986301058fd3d22fa82b6eea61a919068351c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AEA2M2470243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f46dd5be64b122c9ba1183798dc6dafc22bf36c240d565c5702259da9f034f. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/AEA2L2407019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9afababc429937fd6e4a9bf4830c70015c3e3aa4ab11db1f53f01fb0500abe. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AEA2L2419741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9514faf1b1f4d1f644dc9257efad7a724bedc8dbbec03d7ca65a5e79864fe3df. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AEA2L2433639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9514faf1b1f4d1f644dc9257efad7a724bedc8dbbec03d7ca65a5e79864fe3df. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:11Z), 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/AEA2L2433639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c6cd3da46dcdba3d74ab37aee84d40387083899b15a53ca36d6d21fb9579a8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/AEA0Q2487697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d041c9156461d1bca82b150fe1092cbee6e85f8706a6aa2fa355b355aeed6d. 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/QZHNA2519452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b547ba2c18997cf4eb09e436a418776cf0d0a861a3cd8ccbba5b3aacca76326. 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/QZK6N2522832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab89747600989164d6d78fe9e342fe1d2951be903d9572dda2278a71df40387. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6N2527121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bcb6107f641bfbe3db70f6d75620ebcf5e4b41878bf2c11fbce1572a433b3b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6K2589945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c87570a33d11047e0dc9f2c9d76e8f00ef916405ff9d9e3c238e2bf398f8e38. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWT2595849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8354963540f6fea2e8481e26d8e536197add18315665c5341a12178e5f59fa1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFG2529440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5453adeca620d825cec2469078ff9ea3e4cf9150fafa71bab54a8923a2fc5f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7L2520085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6223bd02201c987be282f718246145aaf293d34362b406ad7190f8407103b71f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:39Z), 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/QZZ7M2535350.