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 0xd4c69fa9280b93ba0a480dec1bfa1f0e068dffcc6bd40ed201cad52e057cb3d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8738a5b3-6134-4935-8887-ef2eb70512e0.json and https://artists.proofprofile.net/proofs/artist/8738a5b3-6134-4935-8887-ef2eb70512e0.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 0xde3884fd40411258572f2b254451c5383348ab0d551c7efba05793b306e910dd. 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/GX3HH2335624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bfea5507fa1eed4b112a91f4436b3afce00c383efb5f406ca9a5adfd3f155a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6H2468594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1506df9bcacd8bd9d95a0585b1e00884b9b0749f3af23b9dd7893cbfab681. 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/QZMEQ2463907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a539a36c0006708ab6a37ea487e6f5316f7f002b280bb7406aa37d2ef00c63. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:34Z), 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/QZNWS2474263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53cb1168ef840605020e68d7346fd1d0a72cfebf26d3a549b215de404d40510. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWS2474265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955e0749af1185d635e139134b18e15fd04594adf5a55b3ac2d5faf08ccb897e. 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/QZPLS2438797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae24bf0e1841e4fd6b7b8e13801ad5d59fba3b0cb06fb6abf9d840e15c7795e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAS2408720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2342793a543515bc1cebc5f5bee0025c419f44bbcbdb5ac63387cea5312d7af6. 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/QZTAW2489369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f28e683eb4616de30d0ec429a7885647d75b0b2c2f4e6a9673cf9d666b1c33d. 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/QZTB82410465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acb187343d4e32c8bbbae2b347c373f9b65f9256a506c520a6ffa0a00909768. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZTB82410466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a6c1f3aa353a79dc205cd5c33bd0f80e3fbf7efb02ce1fbd391bbc30d623c. 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/QZWFN2468954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c898bf5289226eeaacb401e76453731d1f1eb1691998ad5334f767eceada817. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFN2468955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6687ba8a7aa1dfe68ef0a90bedddbb9c3f65bfcee3f064611e12bedb2a708a55. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZWFN2468956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74e22e6546a787b036ba01fbfe9f943d009fb09c865215a2bd0078d65790599. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QMDA62483317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfc7a9243e56adeee2233c37638404ac033c53b6d77a61047e1afad18a69416. 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/QZWFU2403246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890bbca013647fe9e5168173b5cd1876c9d87e4ce37552a1814a7a30bb8c402. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZWFU2403247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497699eeb5791b0fd234d060f5c366d5085bf3af3a2dea007eb9918d10e88a54. 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/QZWFU2403248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadde99d1fb21d6f7a69a8213b6e6878544e8d7a9fbaac72c69f93f881b999151. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7N2410667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33644da77fecd1aae84979dfed4a815dfb45dd8d2db04ea39285c1f2c866364. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:31Z), 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/QZZ792480489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de18b59b97b82c2d7be22ea120076c3d868e800679b510eb75ee58e61882819. 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/QZZ792480490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44be4bf8eadc6f582c97e81b677f36a47b3c23fedb4f478ab1e9a14db5f0f5. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZZ792480491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ed8d269bb6d8579046e544fef600a5d47040f9c8389f0cc08ee22bc2db0190. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:49Z), 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/QZZ792480492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b57481c0f9d14c276e5224fb469b51bcf4c52f62fa06e77079017ee2c929934. 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/QZZ792480494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852d79d0690ba27895e77cd9744f96f6b08ed9484d9c9b27907f7fe8ea3c1ef4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ792480495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b149be4a69b002b317931bd7f92656e86f2da6767febbc253746b4c41be238f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ792480496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ece0643e75fbfbc045279f69af8f85c44e9cae25aad0e48dcb1f7b6e0ef6516. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZZ792480497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dfc1312679e5d18c0cdd6b538b4b4ffe1eea8b299b633c0bc22127e880354. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7U2492449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a8f99ef9a82f29fa6c2c659df1d98982f1695ee0d3485d2ebb3e29f161bd44. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZZ7U2492450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63017ed66b155df70e8cec4b6b82251f238c1602e857f46091832cece031f6. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZZ7X2471571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cc2dea08402a0e6747f951c397c350f4f24db39192a46c07969d48171fb71b. 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/QZZ7X2471572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8206f3a1d59daa3e2a8eb2d20aaf87f3e0eb1615bd87b71dbd9c84821d6b78d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7X2471573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fd49d68039f11d861feb6e2b5080734e3738efcd413a51a3b6d1a863e21d9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:32Z), 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/QZES52524205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c773d6c4eaa76bc84b2a0cb78b13a4e56564643942d85a27f97b34a1cccfa9d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZDA42541443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fea3327528c6cb9a45aa782314158f33766c22d896132445cc3a3bb734d22d. 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/FR2X42511229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3908a9ecba93ccf57dce39fd5929807b5c70f983023151289e4fe38831636fcd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:00:05Z), 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/QZTAY2540993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b34941328ed043d74169645920c92cea23287e8bc7ffc1ecc61f4b57630e78a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTBF2541425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6316374a73f678b9c95a7116992d558120c3748533780658671c2e0166b33a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFF2533764.