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 0xb16ea3711f23f99147259da0b01c092294f7538a66608eee941c6f9ea1c924c5. 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/a67f354e-644c-4fcd-bf0a-782f07e0e3f2.json and https://artists.proofprofile.net/proofs/artist/a67f354e-644c-4fcd-bf0a-782f07e0e3f2.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 0x857b60a823469c184ace646a9837536c7718e0d522a907d8f1699e52262560bf. 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/USCGJ1604712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700567cca992bb7a577254406ab95117dd2bc750a20073aec230a9462c694f9b. 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/USCGJ1604713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a08b6ea07d067c528dd8df26e221520618e1fee6ae32728eb9d6848630e796. 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/USCGJ1604714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccb68dc9852c5d565e2176590d1514910f9f6be731b6a6579a701aa5629b641. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:28:42Z), 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/USCGJ1604716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362629552d29784a15b93f52dd30daa8ad8347f507093718b81f0792fa84e0c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:07Z), 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/USCGJ1604717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc117693bb1c89f8176db82bf3bac0e5a68d9fd05d9dae13384c1e48aed1bf8fe. 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/USCGJ1604719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc58dec83c6031967a9b34b1f0cdadfaab9cd269a5ae34c075a70c50ec2197c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:58:30Z), 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/USHM91744189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c57b4b2b8b2ab55854a6714d51ddc945b15903a168efafe0b70d017681f944. 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/USL4R1817742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63d26c27fa0a4b103646a3df0840c464fa21ec90d64826e09be3fa243c28e87. 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/USL4R1817744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17419ae38b1fcb1518e61f12f756ded13e0f6da12251d66b786b3d0264401aa6. 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/USL4R1817746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae3894f775f4cb003b768d246fab73e5c0fa061ee3e33bb8caa458d8d3e113f. 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/USL4R1817747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf20216c61f70bf44a084487b5e3ed9bca0170f81e0db8fec0a3c68a6e0f9d8e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM22033612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293b343c1a4e53bc3ac461911f7faba8d67bc054355734ff86f4e53d7c57820f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:50Z), 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/USL4R2075427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c5d6cbdd2717692ab44d7e296b7ecbdbb39663f52829583be4a9cb99a23d51. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/USHM82352173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f57d8ed1ad22d2d89ca035f3283283904064c459231245fa17505374dea2af1. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USCGH2492305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff97f78c63f9957104cc096793241f0846558081a8603dbf48a7a51125ab47. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGH2492306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d2db12128b212ce5edb056d260360776d198e6289c3ed2e1cc006b249fc59. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:49:14Z), 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/USCGH2492308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c339916f67ce9740c48d7e0dd27ed7f5bc2f9a0c340cbeb9cc979966f75d99. 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/USCGH2492309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9d631cfa48c112d549de10b7447b7d97e02019ec95a9009a1cb16f2cb0b22c. 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/USCGH2492311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba34bd5fb62f56cd06653ef0584ce9df565921f19d5594fd93a14d04d2422718. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:56Z), 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/USCGH2492313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb499b3b4330dd046ac039c4c8a10558795ad40163fd792a95604da1e2237417. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/UKXN22477660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f118ccf372838f06697ba82abc8f280a63148781eff3834121d800c46328b9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:32:51Z), 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/GX53U2360487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe226497df23bc5f50df51863a1a4aaa3a54297a11c51c28bcf782553fcdce0e3. 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/GBMA22552985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ed6bbe8312983679d0a8403a7859b84be9df9c44b4b140bf455fcb9c47160a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCAEB1917028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5ef434aed40e6ec55f270aa322ba6726fef4aee7a549fcc18a22a7763c641. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2386384.