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 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 0x88e001b1d4fdd5b2adc05be3dd48cfb7cc0089c499b19ef82890c761a240bbe9. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2211653b-1328-4f7f-92f1-cb41bb6ccc4d.json and https://artists.proofprofile.net/proofs/artist/2211653b-1328-4f7f-92f1-cb41bb6ccc4d.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 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 0x75d2b8cef36ad0a3d180fc7d993f751751594c73e7d51b46efb704b4c34b123f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USGOT0800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd9b0b338137226b8388b8c902da1ca099cf47a2291fddcfa3f12615ed5ac61. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USGOT0800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5922a6993f0dcd31ba99d34d3ff5132bc2e90223b6728f2081391d3582562. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USGOT0900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d79283c13cff291f6145ddfbc2b11f21f1c324736a71b52c839cccc5919ffd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QMYB31100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603e968752053e58ac0752692f32acdc3d3ab08205204908baae4e559512b6f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafda80bff0548f64b031b47321f5db89a2e3a67d5548444438482eba1596a81. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527740ae63ef289e2f76ce34cd219fb2189308f077318e6664b99fd53b93d9d3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9b25b4ccbf28ecf565090101c275142cb4b5fac934b629f53f3a2399097a1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QMYB31100006.
Made for More (feat. Lecrae & Lisa Gungor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1157f83c9734c5b49b6b491ec76a75cf800ff9cb5ce1b8bad7550c2870b1044. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMYB31100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223ed5a49911fe29e0da0e58e84b135b96eebfd1cac38bb04c1f22b4c085608. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c223f7add99bd5d9f36527ec289e2dabe40eb56cd707ac8b4eb882708685b7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMYB31100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1dd719f3586004d0a0ae3ea695c01aab16f7fadf2716373c526177c9452804. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMYB31100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e804377a4a4e366571878f8df66cce2a6181ff2d85a9517165cdf75e21be24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb44a52ccaa7268fbfbc77a3b29326cdd4b2673cb0fcee3e1294b5d7ee842e8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QMYB31100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d38346d023d03ad3db8a76693ad7b6ffe09991518eb77b25b0bba098add9c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMYB31100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9f239ed595d911084c4bb9d42bbaf0b2b892c05efee1a7d67cb10f41dd4060. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QMYB31100014.
Lonely Hearts Club K.O. Remix (feat. Kevin Olusola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e469a2c25f04c8ea97eb0e73df044c45f3b0533e164b5b526972668c2e965. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMYB31200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5793ebf38e10d86c6fa96f5ef9a3d806f15be3158e374905e6d1495857fc0be8. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMYB31200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82202852e030bfd6730b6741ef96a78a0c3f251baba124350b81e4b7c0ccdd7f. 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/TCACS1638758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c91a5e61e315318c5484addab32f95de52ae436d49eb9e13fafd3c66247e545. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCACS1638773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1238ffaf5f0df85a23345fda6f0e137774a3c121df13e5c8e2b421f4e6b9ec. 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/TCACS1638776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c0a203988421aed7c1bf4b2e328ae654921feaf7b9596b438e080acf248f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACS1638777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789dcd26767609394a90193984e1024bb37661fea7f1ee4614dc6ec983b39725. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACH1577485.