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 0x63cda463d90680219a5a4d6fc59dd8e45dce01baf62d3f551b6a935d9ad0d8fd. 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/678559cd-0718-4489-b06a-dcc8e30eace7.json and https://artists.proofprofile.net/proofs/artist/678559cd-0718-4489-b06a-dcc8e30eace7.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 0x72c2783aa6827506cdda3456c35e6a20a7978fd125dc54e5ceafc941aeaf8576. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZCE61880410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef8f381550c57c8316e88688a44d1bc0cd30b2a8e93082b718f8eb2311a2324. 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/QZCE61872619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a2b872e0f5b284b34c168fdb9697b49f8b3544d3bb4ecc3149747b97286eac. 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/QZHN41927761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bb94e50fb097c91ee748a5322117587c4c821f0c2ed811bfc706f876d824b. 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/QZHN41927762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c71796644d9fc6f2f429879aeef591826b96041b5864ca7bd8420db485f12e. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZHN41927763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265c4ed5f6950b9d76b3c1dd00cac94dbef91c84a2cbeb1892d30f22e470508b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMPKX1880986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cf134d2b86fb10d33b5bf394464567fab50d231c4d8be08f73cd183947b3e2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFZ21917719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd522247ed90196c1f5e40ceb0e8d9aafefed5a2d3c90f6f67a6012b690bed7c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN51940937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af0e0af90842b41586c98ce68de50533b5598f1134a8c6fedce88f60dc952ee. 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/QZHN91936911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe742df17d6997557251291446ded050b0e42f2ab6476ad5c8e0709faffe9ca. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:57Z), 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/QZHN91936913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa9c12c35cd75e01403c9793e566f65392a5a096e1bd18a8d3e9b9e497ec7d9. 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/QZHN91936914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6a54833fc5e5b3d1288df48404c9dd748f973c896270e195ada94bc0e76709. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN91936915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7748ca5108015a43360caa66c1871a550de79aaaa3dcbb8f30942420e96be. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:43Z), 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/QZHN91936918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645995ab994ba67397a2c9e0448fa55d60895c9226f76f13f5971ade4f5a74fc. 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/QZFZ72082307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41794a5cfd50c51801356ff6eaa81f9b5f9bb6a69b6f18be98ee4b8aa4285d10. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ72082308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1193c7928f0b79918d796d3ab68540e00156f402756450d521b04cc533e9aa49. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:05Z), 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/QZFZ72082309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f5bd96f9bcb536ac078fbb93d03db67a2e815586005be7ff2e20c5e0e6fe65. 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/QZFZ72082310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8667af41758327adc8cf27d18635a03ca6731be0c0547959be4d07a407c5538a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:53Z), 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/QZDA82023424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba16cae21dab8d004e6a9f33293118678e5e0fd95fb878c71e7581a299a94ef. 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/QZDA82023425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ede9efa6cb4cfac60d107cd9cd247a95fdb4df9cfcaf93cfac9267f12a1bf27. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:45Z), 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/QZDA82023426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f870266226a1df31d07936ce22a8082a3124ac6c9bb7d9017f9167da7c44de8. 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/QZDA82023427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9bacc2f5623022ef48e9a28b938ed4d771287c03eec2e069045ed4d3e7120b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TRUM72100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59e20262a8be068b23048cf63d13be63caabd2211198c10acbd65983059f64. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:26Z), 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/TRUM72100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7008050583a79b149746806b710e49a202e6916ccbc42a407176b44214a49066. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TRUM72100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9bacc2f5623022ef48e9a28b938ed4d771287c03eec2e069045ed4d3e7120b. 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/TRUM72100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e4895ca67bacd63385a7870779efec14f0497a5f8346a07f447f9b96501d5. 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/TRUM72100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7409627c3d3307cdc413fd9750e95df4a2764d6f5875aedbbc0a94cb460b0264. 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/FR96X2256831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd0ce33904d0d179e335ef4227992807ed8ffa8b85d10e64a20594eeb8b958. 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/QM6N22272046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8993bd6da1a632f66dafb8cba227cf02368295459005a4eda7ffea60bb655690. 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/QM6P42438111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeffb53f02cc1b340f703aa14906b46f124979af6c3d23816f3c87896dd42a5. 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/QZGLM2551482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828ed800197744aae8ed91e002d66bd04c1a5e8b3610181f09dd7f8ecd5d657b. 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/QZGLM2551483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa1a59a70309c8196f2811166041d7174e2f4bad3b03aa036fc3795ca722eaa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGLM2551485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2623627c9344ed90213fd8c6ee05a9fe2cf19f83e69cfb0cdf3c0f9fc9b2607. 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/QZGLM2551487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07e7d32ca2074333dfd502e87d6a41972599ee044ce06c61cb1118a8b77bf5. 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/TRUM72100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07e7d32ca2074333dfd502e87d6a41972599ee044ce06c61cb1118a8b77bf5. 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/TRUM72100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b1418eb54a92f01e30bcddee2c6526fc97919975685afb5e10c8cb8c8636a. 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/QM2PV1509444.