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 0x073fa17e5044f36da06d981c46e58f2e393eb17a47985f541ca47bdcc6694135. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc2d4db-b203-407e-8e9c-0b467ecfff9e.json and https://artists.proofprofile.net/proofs/artist/adc2d4db-b203-407e-8e9c-0b467ecfff9e.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 0x97563dd0ab1ad617348c978e4d634d016c6514f1c4c565007cacd670ef5525ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBFT1500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb66bbb3d4aef0fa18ba36f4a9923edf969ec7c6d1347f5988bb180e3cce494. 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/GBBFT9500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b8a74d2caa844a4a978f3ba82d57a074b8fc93cfc25d5068b5838283b80a7. 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/GBBFT9900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b7f02bd0398f361f68713a285fb7ab65bd2a61aa2314a6d8715bb7404124ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBFT9800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12bd288c2ab44e0b126ba6b22f4eb265f534f18ac5a8fa3e90dd0f1b8fbb604. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT0700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4e186e3b926d12691ee0214694b1b0cb2c3af9229412d29769e227e1053c6. 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/GBBFT0200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15fe7bb0dc525b0de999c14ac87f9c51909587cb63ec583cf79c33414c3e6d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBFT1000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5400e99482bb5fd0d36a83f44bcb5a8a6dbe29ef281c6385fea5a053410edc55. 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/FR80T0600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b78af43cb6ef7fcdfd5b53bec2c85c9a214c2c0d17245f75178f590e71b62. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT1000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394781ba8b7c9d6de58a5c6cbb11b89eb16312041c8975016b5c239e03dff7ae. 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/ITR551415199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc747b9e0bbace4e0e06b239644eec6661b9cfeb9964325fba35b5f62b954fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR0W69924601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ecd25f98c6e37f5ac64af24b60f4a6041494f65545a3c262041f63aaea408d. 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/FR0W69924602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf196a573e8a6ea520949de9dc72766c6dc2263868dc8daee96a0f23b418120. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX079200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34dc76b045778115ced4090503bf9b7d0be15dc90e6e67d4b13a251bef7834a. 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/FRY510778051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb421323df7cb6f1561cf201741d461f700209d1f0fe6b636bf9678ea6d98d8d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBFT1000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c2cb578124980b5a79a721a3ab3348c8c7abc8eaee147e8d5193f24061097. 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/FRY510777811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07c97e2e02ca64b29e84d64bc0ee188d5edb3a200c14f5b751716954138cf1. 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/FRY510777807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf243ad398cf7695058016f459b63824115f15c58b523a708c405b8d9353b217. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0W61777246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c40172fe8c2df2a51f42bfb28fbba361591bc3a2d78b2858a6d25d7b203c256. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITR551413859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e93d1bf6558b6b3965a6d61eab8cbcfdf605cfb7f8afb9eb33d64bb3e5dfa. 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/ITR551500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36d52d688af116c071fe3189f18e202f93c4785d48a8f8616ad7b92b21d5bed. 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/ITR551413362.
Flamenco Masters, Vol. 1 (Pure Spanish and Flamenco Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb421323df7cb6f1561cf201741d461f700209d1f0fe6b636bf9678ea6d98d8d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBFT1000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b78af43cb6ef7fcdfd5b53bec2c85c9a214c2c0d17245f75178f590e71b62. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBFT1000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15fe7bb0dc525b0de999c14ac87f9c51909587cb63ec583cf79c33414c3e6d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT1000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b78af43cb6ef7fcdfd5b53bec2c85c9a214c2c0d17245f75178f590e71b62. 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/GBBFT1000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c6e1c41f94ef143fe766041e8a8ba69f77f7de192f6c38f1e665fb572314a6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX071100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca1cd60d088d26522d8b37453fa01f5f9f5eec21bc8e80d5bcad5c9d525a4b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0W69992570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbedb40cd86750218cb1a6c257f8948280af9afb6b81919a177eb0b1e9a48d4. 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/FR80T0600246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e171798d5365d77896dc9c0f94b19fc9550278722884471b7e01b97509de3eb. 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/FRX079600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecf63b93547d592d2a40f55b3951b3cb2b6604df2e867434a9ea287442dad16. 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/FRX079900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d06b3ca9f120229fe7e2191ee229bc67a25d07b263665be5091937474561d2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0W69992568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85568031d4deb37742262b7744d86eef1031489ddde7039f941ba9b62ba64d38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG140320118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf9b76ac8d39a50b6ae4e631bab40c891c14f406b688ecb18495d4b23225e86. 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/ITR551315302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3489ba2aada31c437ee001785cff46dcf329352faf6e45362515612d9f29190. 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/GBYUE0920941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff875942b8e863f55c0f7829122786304e48084eb4ecc28596c5246c7019160. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBBFT0400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfbe49f52490d4d288f3313bc7ee52c9b2fef62d70fa1fb71cd8f88fafe1863. 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/FR0W69918938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db3a309ce73cd60d98e8f277611c223da5195f3f4d156c32cb08905c1b0233. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:33:59Z), 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/GBBFT0000042.
The Best of the Cocktail Lounge Players, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff875942b8e863f55c0f7829122786304e48084eb4ecc28596c5246c7019160. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT0400196.