1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcee67deb3ab825537113d2df2815bdf1da113a4d2fe926b5ec544e37c538fe0a. 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/38be95d2-91d3-4b6a-a2d3-1574daba6354.json and https://artists.proofprofile.net/proofs/artist/38be95d2-91d3-4b6a-a2d3-1574daba6354.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 → block OTSBitcoinBlock must exist at that height 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 0xd5193bf75e833511c8235cf7b9e96f7b1f4c2fd97a5fd40e1fb1ea30e2334adc. 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/TCACL1617985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe47500bc0376907c796aec509fd65d3308afe429ac6545ac540db9fc4833e6f. 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/TCACL1617986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89f02f9b1c7c5866cf87f0e2b628f549020dd9843fd3aed541e6a9382e43c78. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:02Z), 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/TCACL1617987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aaeb851399c873e6fe1d3badcd8d014ed9da69d83b56fc8f37600523dda280. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCACL1617989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c26a7285070040b597d47d9e9541e12ddb9c180e264a15697cc29376183a0. 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/TCACL1617990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc843a8a085415a3d6e5560ff18904a2b2955cf96add219d5850a7c1c55397772. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACL1617994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d5bbcf3de35c71dd0d8d9ab9d653f5cf3fb1877de391bda7e84ebc84a4dd02. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACL1618016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e1246a527530f5c9d48b20218044c6606f538787c0e4d4db574c098651cc3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX3871200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfaf6dc39ccbc4a413e72c880b3f58f52d157a2608d23e1d8d4c3e1a7de5e55. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/MX3871200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49b1f64d84e27c2ddad5af78dad05342b353d5ea855c204bc488f02f88f739. 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/MX3871200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9163570d021f50ea9461e3ad976283367f02b68b411fff078f0143d58fedad18. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX3871200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b4e4f46fe39d7e14b626ee6618215fa73a2916a55cfb8c76d361fe9b06f992. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/MX3871200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887c82a0dc7d3a5643937ffa0c0eebcf1a3a1f11b790e272be5c10cc0cc324d0. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/MXB971500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7831b3f534753b9d9770fce675d8dbe291074513dea5c6f9e4c733c3ea1e1248. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MXB971500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dcca024c63b1bfc5ec56b1d952382b269f1bf2dcea26500f9689ceba360eef. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/MXB971900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a3205648ace656915b4367739751449a8fc7cc4aac61ad1420c81043944485. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MXB971900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ccceb6b2a35899b7451adacfdd5301eea87f1aa9e6407a6d36f4babbc82082. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/MXB971900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9265f449fb8ffcb416780bc8911f0074b15f2d5062f168c24799383fd03036c. 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/MXB971900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43390b6347746329db955bd73218cf849ccdb7f7f2eb124b67591a3bb750b036. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/MXB971900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71586b6f0ac142d464e3e4925c0a4ac29e91640072af0ffc1d7745e5859a3270. 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/MXB972000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba88a9d305d325d217c9179643a8ddef37544649430b978f15088e83862432a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXB972100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d910bedc9acaae52abe7f075081dc32f0e106776135a7f27f7974f1d7123b90. 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/MXB972200001.