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 0xe6cf1b1651c14a653a3f609978f52788fb4a6509c126bf1d52e389632bf39d95. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/282ed937-3a85-489a-8b22-0039dfbcd9ac.json and https://artists.proofprofile.net/proofs/artist/282ed937-3a85-489a-8b22-0039dfbcd9ac.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 0x25311390835fbf4d90cb10774799c16c903938c2f816971d45a1a09e74f10709. 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/GBPYM0730380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d2ab8be7f9fc3882428244fbab0b859fe0f9919431fc15aab6b0b34948f676. 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/GBPYM0730381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601679fa1695461541382fea4094de61a89f441073a8861918d3d81cc566694c. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/GBPYM0730385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1136dd2a8dced220a6e22bcd643e2d235bb6e30d15dd1851044355e6e3b4050. 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/GBPYM0730387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edb5b8c3dff3cb35786bdd6f6c8130b42a095a7b78ab3ee4ec6faaaa15196e. 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/GBPYM0730388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8f3ae616e4f8c9e10e1f862f4800b28ecb603ca6c190559bb73d46cb314154. 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/GBPYM0730391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5acfecbbd7470b7ba0ce58c4d27497b2d3e8139529db15d49f5b061d9244a1. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBPYM0730382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caa50d5ad4ac3018e6f7ced2e62459c49d562cc59ee5e2d5124ca8a8c3913d2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBPYM0730383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6754fbe09fe215bddd643de52dbed47e3c0613489b6b56a56f73b374ec69c913. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBPYM0730389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d9a9a1fd41c9f3d3fe741c1fdab8b156462bf2bc51a091bf690a70e13720c. 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/GBPYM0730070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316e9e27de029af42fd8db137c7172d0cb912ea7e4eeca6906a3e79303d0988. 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/GBPYM0730189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cdc65c3cd79ceeb0b423ddbfc58f30c2836042423936d19b2bebd9827eb8d. 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/GBPYM0930247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6bedabebb10701e4633b5c07308af37e438f5d07b675c4dadd098cb843315. 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/GBPYM0930259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500c550906e51e14df3d75d1fcf3295c44a5bb2bdc492ddb1cef98372f9f80e. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBBLY2106994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa52ab0a5319e5383983657358e9d1ac579cb58d745ca8851b45429b24cab34e. 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/GBPYM1030203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c650802f3c4cfaa164d7252e508760d9d344dd022bc48b360db9d0426cc1045. 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/GBPYM0730083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd07b88c2a3fd717c7240c1bcabd56768edc729962d63b6b2b456745df8bff. 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/GBPYM1030209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb81a73fe48aefe17aac8a195f3947539b8e003040aa7889d59b09be3ac0113. 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/GBPYM1030217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c92f008a63662e6ab73b9520bd58b0ec5995284ec31335f92cd66e8a9e5510. 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/GBPYM0930171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aa2eb07734666e8a24992d056bc0f7dd3113d5a0585cb9a9c8e029c3013cec. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBPYM1030210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bac4ab991340bd800d4fe4e68426c53dd0f774af648cf6ad35b8789374cc03. 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/GBPYM1030359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edb5b8c3dff3cb35786bdd6f6c8130b42a095a7b78ab3ee4ec6faaaa15196e. 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/GBPYM0730388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c05a007225d1310b3af925e46edc8567a2905489c8bb740e4d5eac3899646c1. 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/GBPYM1030205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb947580ab55a9b5bd0a1013d88be036deb60fdd7fdee6306ed3f3165c819a88. 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/GBBLY1005032.
Oi! The Singles: Classic Oi! Singles 1977-85
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b60614aa68be987f1ad0556c5555b878d2314e3ce49c34e7fa50f460445f34. 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/GBBLY8200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa863a76603fa3e23dc68cee84df265b09bce616347678f4beaed6ce5246ab431. 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/GBPYM0930028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94425caf1f65ae64d4deb9d059b12e40291fbab6e9442d8661df3753f513ec9. 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/GBPYM0930058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424e536f343c7d52fa02b287d24b024699ca5006a8955b3a72c166f341583dc. 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/GBBLY1801711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7e24bd386c40488698bb27ba034ac2251832c23fe3597f881a29199674a171. 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/GBBLY1801713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6048c461f6d9549760910c1f7dcdf2994b2269a3418badb0a1fb89a0b2099772. 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/GBBLY9500361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06865412c665b0da2db9ee2e3e146d4b35e279f595d5617804f181e424abc88d. 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/GBPYM0730285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6733b18e9d1d5f459fb9c306c37cf8d717c5dc262985cc56f579faf8d91db. 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/GBPYM0730277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4843b118895c2c4830d41fc68c0a7973627eaeabb6cc1a1941957d0abc515c. 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/GBPYM0730164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd8ae2475b738177864ecdcca7978a108dad8ab51ca32139b04d03ab24a4ae8. 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/GBPYM0730339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c81fd3a8d50c195e82f05d94a7a1e80fd0ad0bc62196a94b4a98b773c4cbd89. 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/GBBLY8200537.