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 0xe8535d27c579942ff792bf432323f487b4ff4cccf68d2d3ade812185a3b113cb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360367a3-6aa4-43f9-8296-654dd1dbfafa.json and https://artists.proofprofile.net/proofs/artist/360367a3-6aa4-43f9-8296-654dd1dbfafa.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 0xccd11f56d725ff9a11c83430206ccab42af07a02dc63cc5403c0bdbd6b81dbf8. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:10Z), 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/QZTAS2131333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a8c41b0d4f9a5529dde71ea3cc92b81b870bf54eabf3cf5e9d1ac5c7a5b3ba. 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/QZDA82288540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238c147fd5ac972b4223180271ca19572a3bab94f31bbdbc65acde88b8b443c. 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/QZES62246769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e5a03164e695260c45d82ca81f28c4ceb682d0642ebbf78ab939df431c86d. 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/QZHN32232874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7858f5c6789aab52acbcd2f556860c42c0acae633bcab9fb9f087ecfbac52. 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/QZNWX2241995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24352629dbaec6f41a1a973d64c025fdb006217cf5d72d65492e727a28ace27f. 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/QZTB92286160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a8c41b0d4f9a5529dde71ea3cc92b81b870bf54eabf3cf5e9d1ac5c7a5b3ba. 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/QZDA82288540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238c147fd5ac972b4223180271ca19572a3bab94f31bbdbc65acde88b8b443c. 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/QZES62246769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e5a03164e695260c45d82ca81f28c4ceb682d0642ebbf78ab939df431c86d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:37:17Z), 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/QZHN32232874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e50c0f256005b234383e3190c54f8dcd3b6b7e9aac24874d7cf0b4bdbd1c69. 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/QZHNC2206134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7858f5c6789aab52acbcd2f556860c42c0acae633bcab9fb9f087ecfbac52. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWX2241995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24352629dbaec6f41a1a973d64c025fdb006217cf5d72d65492e727a28ace27f. 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/QZTB92286160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ecee406ac550dcd1a322afa37c01decca57661f0a20207b3f5cef44be4b4e1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:30Z), 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/QZNWT2527412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7754241a637345962a595231a1a31120f9dca7bccb91106b403e2f44e653ea. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZHNC2243958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cfe5a32bb55f1cc013e2d33205ba54a27a60f4aed1a4c4bb57bda2af2c51a8. 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/QZHNC2243959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7762624aee45ac83403d0a49c4c169ea91467e448b1385e49deae0d991a66277. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZHNC2243960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd06419b7b6da720c202b18733a78c3ad34097be6e0acc51d0e737b16f09b0. 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/QZMEQ2298653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd06419b7b6da720c202b18733a78c3ad34097be6e0acc51d0e737b16f09b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEQ2298653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041d7f4e92db94a210e8e067231aed9292df151eab6b0f40c0ff2f9a62262450. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:42:47Z), 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/QZMEP2205692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac95116ae505b852c03e830a9f0e690825b5d0484f780eae85895ad6f8c6914. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:01Z), 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/QZNWT2200338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4701286ae811231e8af3636a002732ce8df6cf57c599c487705ac96cd1f30bcc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZK6J2277570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2048a4f7d458ae810bcd3f234d4039a267ab662a71af0420bbc71470b0cd2. 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/USA2P2421264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf855e0df5b53f83528617ff708aab642b98f065e4367c8deb79504ce8cf7e0. 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/QZHNA2430596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d71b1a60d225b3819d0fce1ed173f41db3793d77750e7a39f87c761386414e5. 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/USA2P2436661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af687e2051f0d91d3c52ec03e82c7562a76a6b7e8e850a13d025ccab7d20307. 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/USA2P2436662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fca4cdda3356870c1e8a5e0bc445172c7db29bff95697bba9121c4919f09c. 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/USA2P2436663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2048a4f7d458ae810bcd3f234d4039a267ab662a71af0420bbc71470b0cd2. 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/USA2P2421264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2e71fc36728c5df2032926f4c23a66ec38136b18088bfa96aee43ce72d3786. 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/USA2P2436664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68c7c5cbc051a5410b9f6f78d76d3127981d0f6fe38548b8a6dd86500cc91c2. 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/USA2P2433351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ea2ee2780cc5f9ea8b2c1c697db73e9e1c504c9f707793b6ebfd2bb015f40a. 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/USA2P2436665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587cdabf29e3d1f0155e9079a49ca65fb0e797b82244cecdda1c58d9bffd7e28. 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/BK4DA2462502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d5df9504aa85e145a88b32a9f782b7a533f206125baca4e259b879d3dca2b. 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/QMDA62327226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f05b13918c5fbecc8d33aa39d35c1e15432d8f1c4fb922648b051fa2185b4. 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/UYB282433585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33656d37d526b9c389bfc6240f4ee4f8ae6526d2360976ae70b64dc075af64d3. 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/QMFMG2314484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e4a95e4976b668b7335ae9a2b0025a4129514594337ad90cab16925dd5dc2. 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/UYB282498897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9aaccf81d5289abf18fa8c57e48bc3ecb2f84d2d7adc8bdd504099b4998e7a. 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/BK4DA2463746.