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 0x0a97744f38fed63601b161896721d7d1855abb329bb4b61c82ae2abaef03f5a8. 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/6838d890-d489-43b8-ac5f-adab8d4187c4.json and https://artists.proofprofile.net/proofs/artist/6838d890-d489-43b8-ac5f-adab8d4187c4.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 0x623d4630003def03d7e462e4898dd249b5ce233fb1ee19379522994ed30af6b4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX451574470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f9dadd26eeb9ee0c30d10c037f63c5e89988b4c1a7286c01fdcd1b376757b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX451574471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc94171901ad536a936a2914791f539259dfb6bc1716a5e88fa71759a6bc625. 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/FRX451574474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64acf805f3d403a53b0f6fa98625fde2bcaf6b78c890cc0ff5643197d57e24. 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/FRX451574477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4977397c8f8d0b44437de01349c1a83334e035f6d94dea6c57d50cea791c786. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX451574478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8167ae328a9b72063c7937d79ebf654a372e5fcd5dc01ecbfec349f9ec20a5d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:47:27Z), 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/FR10S1666106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11803c6e45958bb892d568701f13115d39e523a0e48e2f29f54ef4be40bc011. 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/FR2X41668908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbc4bd8d3f961658995ec8dbe42cba67d16146fb08900010c5aefb738ed6c0a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:36Z), 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/GB9TP1501723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258405d312bcb42ca60836a75b1653f2c773edaf336c9858a3668a828aa3672. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FRX201904465.
Time is A Gift Which We Share All The Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27625f2aef5415ef49389fdfa3c36023b15f283df1d1e47a717a1a2d1cffc16. 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/FR2X42067753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7c1109334f977c500db69e3d72b1192353829a6f55e751284d5ecf5a0d79ed. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:14:40Z), 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/FRX282048415.
Time Is a Gift Which We Share All the Time (Remixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70cfa807400ad7ea8f63f9ddc3494d3bf5c881a8b40ff1c886ec0ed18fbd8b8. 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/FRX282048416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ea7d31db3dde05aa33c0ef0b85a09561ea11fb36f4981680ee930be9388b3. 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/UK9AV2201758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e7d624019f9ce8813997fcbf18d8de11e50149a7510dd95201e12d7823bf92. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UK9AV2201762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f3143dc613070c562c67b4a80e26ca1c83435e3cb3fd41b582d1580a21581e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FRX202565992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7d8335651f230de8f15a6b149df17b15718a4d26e0c6e4d0e57d9505062acf. 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/FRX202565993.
Wanted Afro Groove: From Diggers to Music Lovers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01ce41621258c333b472efe01726ead3dae07ad2d7bb7f463e94cf486c4e55e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX451574472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc858e27204e1e0763fabc4e52584d414ec76959cde51edc0c667a70fd94b881c. 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/GBEXH1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c8987469247c89ffc1f9ed193b7838997c3817c6b2cd89e2e5f7dbc8f8b8f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBJX30816015.
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 0xc49f19bb410150a744352f918aa38ebc3f4cdca3321a4a4c676628b16c823032. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZNWU2086001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509daf4c59734de5c10385fbc4c1e4aaff3932089218f8f7fc6b48e134191eb3. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/UKSP42100127.