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 0x939adf695b9350fdf85188c582a7d11685a1005dfb9fb24322c05708b6370312. 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/4d556e66-38cb-40ee-b5f4-e71c1184d889.json and https://artists.proofprofile.net/proofs/artist/4d556e66-38cb-40ee-b5f4-e71c1184d889.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 0x16e9f68cb17236e2822173e7a0ddb70c44cc05a46df4360265a5bb3858027c0e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81902248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177e5375730ae7885ca548b25c25a2fda7f0ecb7f033e147aa58780b294506c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ2072490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8deee62d2b64a776db1a144d59a5031f42c8d8b669b7a7c1f00fd8de25c55d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGH2007810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea401fda9de5e23abd2160ef7cc47eca52ca7cc94d52b23f36b771707010d883. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:40Z), 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/USHM22064646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dc3db325646642799e5c9bfebe389026d3150136f03503d47caf3e74319579. 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/USL4Q2006854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223ea612ecfaaa729e3bb75d78fe0c9b0633a07497b830030509407c81d0c6d3. 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/USDY42109126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75398d0685de0ed6fafcb3d7220b86a8facbb8a26ae6146802b338b2c21d12. 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/USL4R2031005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe123436da26556a1b537b5c0d24c4e039e96660adab280edb756f12834a87b46. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USHM22215972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f3f67c12c13ecbcf7752bfb54fbba75edcc61e083ee5a548a58a6e1924304. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USANG2203139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e9567cdfb9ce6934bb2de79e2699e8aee9c4d6610ee0eeec67a7a9f578a06. 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/USANG2203143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728e334d107169ca34c3272bedc384109d1940dc787dcbc704f99678c71b6226. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM3DF2218014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc97f8e782ac3c2970d12b81e68b1302bacd00b372a8eb9177d89decfc10a68. 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/QM3DF2268115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d32b27424ac289ea3f47ce00b35f78ce7e1f8726f1f34a7dc6282bba24c251. 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/QMANG2251234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7692e5ae9a6d66832a60eea0ac25869a78e9b221543e0775bc6737f42a431b5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMANG2257990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e7542b78c69b01c41c4f9795416b1a1fbe6e53e5021e45c05bec06ca830eb7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGH2427159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c768b50488b11c400e1cd1f1a56ae6a329eae71deb1928083d31b3d015bb61b. 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/USCGH2460421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691c1eee9710f5baf4a4327e4094e5e72b82f1e4ba03279c0f69520a0c50feb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZES72440579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37a5da82f98e3d7470befa7c3460addd75cc5c944c83abf8d437260c5470a9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ2479461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8427f2788716587a47cb6ff201520b7888b5f576bcf0d4e5bdcba989a7fa35eb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USDY42424103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7cf134f8e352b56c54f2835d8f98a7f9aef793e92a3ebaa575b7f1ea0d32e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDY42407140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d32b27424ac289ea3f47ce00b35f78ce7e1f8726f1f34a7dc6282bba24c251. 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/QMANG2251234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c768b50488b11c400e1cd1f1a56ae6a329eae71deb1928083d31b3d015bb61b. 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/USCGH2460421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cc5cb50274015785780935ccb19b329bf7790d134fec49c1edce5fb847e25d. 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/USDY42483538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37a5da82f98e3d7470befa7c3460addd75cc5c944c83abf8d437260c5470a9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USCGJ2479461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7cf134f8e352b56c54f2835d8f98a7f9aef793e92a3ebaa575b7f1ea0d32e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USDY42407140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a59d4316ae081c8b2ace225292b9d18e781fea098487ecd649a153f504b928. 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/USDY42407462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a705bc19f2d09347d823c61fb771f37a0e0a9842b9f23fcd52d86137c4ecf2f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USDY42483539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3627eb7e3126831eed9a07f92262d1a3e1f4f12abd5ed169afb2abfe810a5f76. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:43:13Z), 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/QZNWY2433299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25e027a778a1d0f9e04406974605d5258dbb700887868d48e1669fd5c3ca3ca. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:00Z), 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/QZNWW2416656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca45db7cafa101eb68681ea357302b63854fdaf13cafd0b9d4b8fd49ff24a72. 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/QZPLR2453637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c015f884508e86b4a0c5a67813ce74f276a564d62e71402d1ed997a0033c6f7. 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/QZMEM2592259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a821c991c37ac5f8176843acfa37acfc2cf0e4f3e2c128c4ec341778bbd2c30. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:47Z), 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/QZMEM2592258.