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 0xed2e23190989a8f8400de4ee53464fe55ef0dacc119e1af4a31f8e9c7a283e0f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8af7edb8-c089-450a-b892-a0ce91ffbe63.json and https://artists.proofprofile.net/proofs/artist/8af7edb8-c089-450a-b892-a0ce91ffbe63.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 0x2a854390f8db6f95505eabedfaa6818de8d4d3cd0b69aac3499cc65442a4adb1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB8HK1302671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5b88edb579a6f13d72350e022c7656cd6a0b9521c8e72199936c5eae20eb0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB8HK1302672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd671c4079faf678cc2ac464677db6aca734400825f9f5202f7df1f20eddb670. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:01Z), 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/GB8HK1302675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc985380fedaa7f9f5eeb37d7b8d291e1d359741c213b29d750fdd2bcfeb9f17. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:19:25Z), 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/FR26V1500584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b713950e791e7c230f5742d3393535e76253b7d5ca7dc1d44e9edc15642fdb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR26V1500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8674c34e3ac14e856f58f7031f59f3e0bab88d2d0030d55141d2949943ecd403. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:55Z), 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/QMBZ91672278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94eb9e3736d18e25bba52982b2d916f0cfcdb183f5b83b8b7b5eb94867fd3fb. 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/QMBZ91672279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee071b8e41ad678b7be61e41b56f9b5bc8284e592fd132335546ac9dcf00484. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMBZ91672280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17afd81c4b2a9363befb9e23d8453cb00e673690662d746f5cc8eef56d88fff3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMBZ91672281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29034e5dbb72fd90998deb36fcab6d8d3a0bcb1e1e45d52723245ba426e64897. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:34Z), 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/QMBZ91672284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeae92250539d5b67bbb2de8f8728f52b9ab7c1f9570e619115cf46a719c3bf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFME1996956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75383899469a39ec3305409b1c03a9cc0962a8c112e6c227327bd27ab6f600d8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMFME1996986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800f7827cd089d4ee577c097ce3f8d7349fd5381503192e8ce20a57e312a151d. 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/QMFME1996985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0016510415c0e3520b7cabcef3d7d8d348badcfb3e0d01bd6e981dcdd7de73. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QMFME1996983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206f835bbc171bf5e4b2053fc2209c210f254d97428d953ee38499d4b897ce6a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:42Z), 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/QMFME1996982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a8c57bbfbc57d736e8b46873399e75f946c9af12072ef7226f2b5259cfacc4. 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/ES31E2205386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb109fbc31268702a3ad94a5ef3c583be4d6044710a28d0a51d5bfa7970b2a3f3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:30Z), 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/ES31E2405823.