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 0xd94360d53b9d240df6a77309956728382ac293dd2f8a7a6f82ae0f7b3fdcefca. 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/5f7ff439-4311-4917-8309-45359ac01ea2.json and https://artists.proofprofile.net/proofs/artist/5f7ff439-4311-4917-8309-45359ac01ea2.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 0xa8e62ef08aa33d65ba153bd21d10baaa24886aadd1da999f62eb2db801438fd1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2416316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19f9cd561a5dba2eb7a3ac2af4a8a352a4950890daeb58d648816bc3e50a4f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2326330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836fd1a4f244d11c29bf821b97d9469251670d9a2d1503bb6ff972d74cc10d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2416317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf18a3f8d2f20ce900d323943839806bd0121c3765aab34e5c086d7d1cfb675. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJX2306089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3a16333619e63ea4f7401179a0975203103fb5b0fcb5c4371f825104eedc9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2416318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac040c6193c476261c3a0b9357bd3e25123a702090da6b78c1d8338d203fd17d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2485195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55cddda86286006d4c4936ab73914ab7e677307347354692b7b0d9245cc1b2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2392077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f48e00bd4d4408acfa490e392305f3a35b16b3908ddc0b94b4c8b7ce3c21e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2384886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0238d2b9ba41c2dcb6b367cebcfdd2836762f1bf98c532c3456e8d57c643def2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2416319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830fbe286f2d4149fe1c0fb5f11aafec467ffca54d144ef083449221635f236c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22058403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f46e546b9f45a0dde16b4517fcbde08b5bf61968256ec95cb93d2378959c63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2102756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49102f61b7af00e3cc3b4b24cdbc11cbd40a47de0f23d3dd4be248eef5d16e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2069817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8329962b0a60f82e20208fdf9c5a8b6b287bbbc49ab8c6923007d940abb11ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLFP2102760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b857b55884c474b10c1357cae028326f9c26ce7fd7811660756050d208e4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2102759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f579f56f2086adf4afa2378114d3530e59a85507855416ad7cbcd149a24b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMA22004792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317c3dad8ea2d05fe0e2db58305306d8569ef25723a31c1592dbe912ddf6a058. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22014389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb9d16db964e344ab14bac92d77332096762ade877ecfd0087ccd1ed97685ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2102762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc9df6cba390c760e744829e15b2b0b2457b322db1a192e0e20c59af28a718. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2102763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3587728d40bf76cde7d21f97819602616da2d3e248ea3833bac34774f24ac9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2102765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac040c6193c476261c3a0b9357bd3e25123a702090da6b78c1d8338d203fd17d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2485195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f48e00bd4d4408acfa490e392305f3a35b16b3908ddc0b94b4c8b7ce3c21e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2384886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7254d75422caeafa4c9d467cecd4f58928ae154b46dabc8d211c41a5d07946. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG1985260.