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 0x7ebdf3d440f2eb7eb1aeb361f9586209b7c0d7acb1eb95b4727be61856c81f0e. 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/b4e2218f-3636-40b2-849e-4a62edbcea65.json and https://artists.proofprofile.net/proofs/artist/b4e2218f-3636-40b2-849e-4a62edbcea65.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 0xcb619dd9c60ad044cde93241cf3227ff271bb1cbd5dd035e2c734857168f5ccf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:30:05Z), 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/CH7812351314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6048e914d60b85b0afb256b994abe8f246c03bbadb5ef78fba689818698db371. 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/CH7812351315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32e599b1fbf28fbb4c1e92a21c89a2b1486b4937d2e82d31494b231627e6c5a. 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/CH7812351317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769b47a11614fc1981ab55a05fa4d378239b25dfc7e0e7d3d8abae2a4170fc77. 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/CH7812351319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d852bab179b8cebcfbacd765e4daaada114f42c6a7d0aaf39520584e7796d9. 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/CH7812351320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7868083d34c64280b43c3a5ee18edccbbe757ee42523fde6eded692e648c9915. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:29Z), 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/CH7812351323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050f74b89848a2a6c98d4f18b87a525e8de024a97428042cd77caf9237d57de. 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/CH7812351324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d98da405a31be574674b71a69b3e493c6a56ca5964023abcb389222a21d1b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:57Z), 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/CH7812351326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e92aa15fbe5787cc38631783eed5e0afc86bf616cde32a3735594d75f6eef66. 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/CH7812351329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a639412b642f45751a773d79faa7635d34f4258f662272fbc2e7f793925a868. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:06Z), 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/CH7812351355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18628ff1d5cd68a065e7918cdcb9d2677379e1bf50152883ba53a267de8019eb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:12Z), 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/CH7812351357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5bebef5cb4fcbf11cab77949d9d99ce594cd708039a226b560c2f9d340deee. 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/CH7812351358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42daae8fc6fcdeb8f92df745d02da10e9b795fa67a2aedf082eaa6440bc07631. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:45Z), 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/CH7812351360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c3cfd2d8925b66cf6ebda4f2a06ba555fc47e2e1c7e6c3bcfc0494f28a428. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CH7812351362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85f4cb8cdd3b5726c06951fdc79f9743001eee530520e17a9749cb25e7a9682. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:17Z), 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/CH7812351365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cd9b62089e89c625543d40d30255245063d4a382a8c9ded232f343ffc1bd4e. 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/CH7812351366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f066ffae78b22c2eed861c34077aca8c44dd670109e00779058b0fb8868b1b8. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/CH7812351369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60802e56a6a7fa6971cca71e722c9f0d033ab4e8eb967415ce6b09996f74579. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/CH7812351370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e66cf8f761e34317a18242b5f7eefeeb5304b7a994bfa5e38c69ee21dcbe6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CH7812351373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27ea0caae46e0c14673c283a161c36ce14b45dcae474798f5fa534bb87fed11. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:49Z), 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/CH7812351333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3de1a59938568e9b52a8060baed40e9839d2d98b162583ed4aa055746aa0f4. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CH7812351334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d987aca529b4678d077a0747d83cae6b98d607f62241e6212f24d8b84c9c0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CH7812351336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d311f1e4c6e0fe6eaecd57d01ed7a8dbc7a8c97f4a3cd2971153ac5756bd9e9. 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/CH7812351338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989c349aa3b09746802e8f113b57b4b4ee6474fd4fa3ee7d0b74160aa0cf1ac0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CH7812351341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d74dcbc83090b30beefc0a2f848dbb24f1137e672cae67bcc1def28149440. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:28Z), 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/CH7812351342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46b6c17b2195c947a4bc5a8c36fa9f19ce99a527bbb7c30e8955e343907b8e3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CH7812351345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5317364cba9a786b18b54803937dbae041e6fa00f622262203c94925ea30464f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:38:52Z), 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/CH7812351347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ce783cee1c3f19b8c7c5ded1e5a73201404fcc1b4bcaa86fd2bdf04d71fb0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:49Z), 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/CH7812351348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3875254ef73db760a1ade6b311caacb0ee52d4d3852c02cd31d025ea1a741e. 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/CH7812351351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cf384a194c8a363e0b6f7323c4eae7f1beef5712ea10f826da6bd82648a7fc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:37Z), 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/CH7812351352.