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 0x09ae582102e4d5c7d29287de0bd3b6b37cc9141df9de783b20a1398edc538b91. 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/e6bfe343-b7a2-4b33-89f8-ac3c1263153a.json and https://artists.proofprofile.net/proofs/artist/e6bfe343-b7a2-4b33-89f8-ac3c1263153a.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 0xb2f158fb2988ddc3b82a213051a0183a34a66105b3a8b22f691e675867104e91. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ZAA020500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed72b7f296d62372bc98700a0b0dd208bbd4b012e5b09ea68b9d9fa961caeb9b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZAA020500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86ea565af9605a9d90d0eab25c45ca2a2016d9349fb01e9a0f7895515752628. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ZAA020500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c53e02796d4f95d0cc9bcdd446e7527cf803dbc18c07b3b7f353e95dd48e9. 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/ZAA020500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadfdc6e461b05d83639bd824dbc2caec9ef9ae1a28781f98ecfbba69aa01e76. 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/ZAA040700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024997616d47e5226a1183386cacabd1c228938512dbe9debe4ae8dc1e995287. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZAA040700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72deb7bb2b15e90fdbb0434d57beb7af0d5c458628414f2f2c5b7ebfbca2caf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ZAA040700188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c6aeca7ebade519014ab622e584c133e3c4b704a94143b51156d8d03ad14ae. Chain 2 (Bitcoin): anchored in block 957529 (2026-07-11T06:30:13Z), 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/ZAA020800779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e90305efe6f44d4248ec8977c2185199e3ba0a35bed6ecb82dc3dfc56a949. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ZAA020800783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4573c8ff7fde41776cebbcb12c7b4546661dd3cff63104692c8c4f03531c53. 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/ZAA020900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3927412e680d3d2c495ba25e2b30d0e80bdbe7e8bc9bfd4089a28d8966588019. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ZAA020400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4174aa7f88ea8e17d88ea0dd9ab8e3ea8c118750861e93f85c9a121db87cca59. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ZAA020300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e66dcb900efba674ce6df27e1839216aae741e3ad872587b34cd57eb22c90c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ZAA020300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc2a62eb459af175a7b7a690f10d40c6493bb6106a267f1192320313e433d85. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ZAA020300142.
Morena O Theile Tsotlhe - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c14089212928f63b267b691bec96a9675275c11b963119bab426db0a3f5759. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAA020300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d479f0504f0b49048bd3e0273242380f682f2a1bf5765257b6cc4ed427e4439. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/ZAA020300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dffd51d506beb77c3517ef63f3e018ff77c122006c399b453bcf2a986a8175. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAA020300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c9c0555963f89d22283172e500a5f38085e4a15f41aaa858c00f4999242435. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ZAA020300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99ab3557d8aa5948c2140733d5cb60af33a2003b965c80054796e674708efd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ZAA021000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c494e81711c07c2a3f1d96e116a0acb10175ed5b3e641129dcfdca0609f025. 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/ZAA021000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba601aa755340ade9760a577d2b9a40510d5fdfc757bec8f349f06418ef15476. 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/ZAA021000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf49d0ccc9f32bdc599a3a23685072cd9c81c7064a5c37275b397e16e03a8e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ZAA021000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec3ddc30b13d6b5a6a26e18acc457a8fe4d4d26b8e57fa9cd9bb5a77674113c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZAA021000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b7f3ccb84327388860156ed47a85b1576f5cd6d93640fd34d67997525f4215. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ZAA021000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0817acac2edc560c9970f91e4b65892e78b4fb220dddf48a62a7f86b85cd4b0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ZAA021000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e70f1b172b9d6d8b2a03e4a4186be6c56268f2cd06612b9e39f532c37de7313. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZAA021000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de51950f1ce98898f0e02a299e2d6efb75a9e45463c54917cca79e5064526e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ZAA021000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebada4fe44b2313ac0a8a844ed9b2a98b92cfad57d2bc6b0377d780fc4d34c25. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZAA021000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2320f5d87687c2dd002f95684daae2f76020970937e8022656cfdaea971225. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ZAA021000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59713cdd9f991a77d14efc1f947465adf1b979ada112796d8a683f576573bc54. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ZAA021300009.