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 0xfcd0475228163b1ed68196d25634a85191328bfcb0cfb519a0725dd63f1aaddd. 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/e9642a05-0b11-4b22-994a-cd5bbca26143.json and https://artists.proofprofile.net/proofs/artist/e9642a05-0b11-4b22-994a-cd5bbca26143.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 0x1366aca71796f785df4051efd60b7893afc58a2c8c5539a658159fa1af403983. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTPX2315269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09c1db12c604183d865592e741da9cc1c694ad660ea36e41352cd67d0fb0891. 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/QZTPX2315271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda59f94afebce989f30540c89972ab9d33b95d1da89774ff81569334e640295. 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/QZNJX2346877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e16d9e41258bf884b797a5bfd169e0911dbefa8466004d83b6d257fd935153. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJY2326879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651830306c17e0ec030cc186e7c21cf4c72c780e142eb6c84e470a5802e58e99. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2315275.
Primer Disco de Nueve Desconocidos Llamado Nueve Desconocidos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f65110fff751f7e303b961e0f8f13b5f8fbd022867ed7311663cefa166eca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ92146927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9429145935bb01110a7ee7695ea810e8000535da6c0b4de45cec1dadf34d6ebd. 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/QMDA62166925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f8724efc83bd79b48f31be5a5e9ddb958d5211ba8f563f7aac25b8bcb2099. 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/QMDA62176635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211f67f1c4fcd83acb041cc8978fa41be60b367caf7b8135ca8723aeb3caedc7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6N22138413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989a55b3688db7ac5f20acf8405005e7174b64dda8098739bc728770cf7caeb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:39:59Z), 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/QMDA62176658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713ba81f3b2b162370444e0eecf469d4c713425e160d3e862b2aaccfd85b1567. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2106113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58680e6bd67d80590c1a14efdda9ab924aef3da983ca3eac92a0a6f7af881101. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMDA62176665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f429cfb6cca92db78922070573d027ce0db6bc56877a28bac8622317266ab14. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:07:59Z), 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/QMDA62176669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd7179b42f0a75d66541f799ff306ed93721b76cf56a3230269b9023c5480c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA62176692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c456553aea2c7de8827fc9499b5aa936324bc8a2f6a4863445db02a01b3f9. 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/QZNJX2402401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006fb45401f4d4aa8640e3ff15d7f60d131fadca5c03e1a58a8a4819f7cd65f2. 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/QZGLS2403191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e4c14f42bc93de16dc60a245e9fdd2323d8a1c2d603c3e5b63144ae9e0280. 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/QZGLS2403193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13579acb69413ab7d70102979579b10efc684e54e73837f8650fcbc0c835eca9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLM2475149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d1652079be6e82153afa54348868531394e13f6017d75bb5dbe0ac6ff89bc. 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/QZGLM2475150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b5935cf0b3e337d3bb9443e496981c1837b095d212e242a7371d7fa20754c3. 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/QZW9L2360335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e16d9e41258bf884b797a5bfd169e0911dbefa8466004d83b6d257fd935153. 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/QZNJY2326879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda59f94afebce989f30540c89972ab9d33b95d1da89774ff81569334e640295. 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/QZNJX2346877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ff6098418fec1f686b1714d1f0c26b09c947ae93328e99000db01e65e774bf. 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/QMDA72203275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9429145935bb01110a7ee7695ea810e8000535da6c0b4de45cec1dadf34d6ebd. 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/QMDA62166925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f65110fff751f7e303b961e0f8f13b5f8fbd022867ed7311663cefa166eca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ92146927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64163dfdec52c8478c5d049820ca848b90bc66e6a5196352c8a81d9c74720beb. 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/QMBZ92146929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211f67f1c4fcd83acb041cc8978fa41be60b367caf7b8135ca8723aeb3caedc7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6N22138413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713ba81f3b2b162370444e0eecf469d4c713425e160d3e862b2aaccfd85b1567. 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/QM4TX2106113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316690e4a434a24608bcbaf8a922c9626999d0ae8d6dfc14a3bccbf8397bad68. 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/QZW9L2497833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721c9dcf46baad47fdd87d6d89f17e803cd6d53c8e53706cbac65bea0db3b3f. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T17:22:43Z), 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/QZW9L2418384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbb76c158186079f6080e2a0e1a285b1caa440c438a6fda2b338d66e0d820ee. 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/QZTVM2434979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61444fbae063974f071e1e2db387d5fbcf08de59d96bfcaa5dff459caf628f93. 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/US38Y2506583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267df23485512be7be9073520bb17c39b008c4b5c7fee95a576b4f868c0579f. 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/US38Y2518638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f45cab98ded8d73228fab5890d6b01ecb54879b3ce14503a40614a14d3447cd. 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/US38Y2518640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb226ffe5639cef7893ec2246c54451cdabda565e2c22a8a8eac2c3d0061404c8. 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/US38Y2518642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc7a45e32e85274af0bc88840d01cfe02e25213da546067029ab5ade0412a2d. 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/US38Y2518643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3432a0681a1cb341331f9c5c46d01f94975dc9ca7cf9f4afb6d908b675d6b8. 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/US38Y2518644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40c4b33ef3a4aab3e7d36d6dd019786cd47ccaca7f6975ea0fbd870d9dbff5a. 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/US38Y2518883.