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 0xff0d1b8977186a3c68f46e7f7df0dcfaf3b8be9f8cde1b5b01808e5c5c00b7da. 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/f8b10f27-debd-4cb9-9cc4-8f5559bd4051.json and https://artists.proofprofile.net/proofs/artist/f8b10f27-debd-4cb9-9cc4-8f5559bd4051.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 0xbe421aa041520d6c30302c8fb0277e44852e139cf85d6525faf2f7ac4ebfe9da. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D2443879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc5bea98ceba679049e40e0f10c4dba2420ace4734380b5abd05c85d4648e82. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:07Z), 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/RUA1D2460386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6f67ba2e7337613625873ec25f9c50ae533599076e5a03fd560d8ed35bdd69. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB8KE2415668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c43184f55c167bd4d112cbffccb6d22c4a2a69efd1bb2322f9a61add419a28. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2417196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfb9c80b64b0ceb4717aee07fa5f45ac2d570539af060d9df06b81cded1e3af. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GB8KE2417197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad85bc4a090a85562fcffd82951e985dc6d8021551787d18909e57e30251e07. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA092438178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef76feaf51d746c94cbc86b5fbcc261da12cf37bd736350e57228ea85f829626. 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/QMDA62443627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2e2c2aa09bbce167e67cffd5985a0c2bfb2803aa97d54bbb763f7f90f69dd9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GB8KE2424024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b853a19deca976991375c0ea1741cd0e3987b37811caae83e2a419c04589201. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GB8KE2424573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a14f8ba659b91dd6fa0a437e62c4ae9587ad059700b0f0113702bf36f2391c9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB8KE2429145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4343133c8080cb86fbc8f1c948462e9c2eec84eac0fd9d19e7a0d064cb589ec5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GB8KE2502275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de5ed6553d6613bca2231b5300522990b8c9cc5feab0ecc1b0504a74508228. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:43:31Z), 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/GB8KE2500689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa732c2d036c20b4d50c6fb25e0d62a6abd9d6bbfca9c0d91f58cd15e93ef8c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GB8KE2500694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0471680c0de7b36f08113627394059417ee9ceac6c13a157a195f0a6586375. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB8KE2511694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1fff489fb2805b18fa7426548d3180d9027aa4b902f1773e71ca178bcfc826. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GB8KE2511695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8d6e427a52a63f81f9ab9ba1d6935be60afcc0d808ee80759fa4ad5a7afae4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GB8KE2511696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f03504991832f51939a01cd0277a6f54bf51ecf14c88e726f8559420457084. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2511697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5000f56cca17c4e0b5aa1ada93fe7db26d49f82c2c0c444d1546ef8c5cac2138. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2513601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf108b93a845946fc278d4ea781dda52dd4faeabbbd140cdfccf03c7266aae7f. 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/GB8KE2515398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c308e3cc7be256bcd215c75b3e11d1fab76a35e4b6a37e17dd1e99df2821d8f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GB8KE2515399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b4ff19dfb9d767f9d2c4656912519591f186fa85d308120e46ad869fb70cd2. 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/GB8KE2515400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa881135768d8a8ac9964d5f50b2c1f45d9afc75b982e9616e10e8ae5e5d758aa. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZWDW2564968.