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 0xfea433611fd6537dce097b9f0236cead8884fc9c438449e502adf397ed917416. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04caf56d-796b-489c-b9cf-2746c90ddb6c.json and https://artists.proofprofile.net/proofs/artist/04caf56d-796b-489c-b9cf-2746c90ddb6c.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 0xcb0db6966e14da3a78e7539b21a0047859c4f8a71cc3e96697f9c9d995009365. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRA381703406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff42377fd944f6091a542a8e611bb3a853323eaf522b021ec25aa1569fd42bc6. 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/KRA381703407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1766b7b65e4ff0da70ed46f4d2379800a223163656f180a719f311f3d9726d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:52Z), 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/KRA381703459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35eabc0b812746b3a60c242003e82993027466c92fa569981dda8ea95000c61. 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/KRA381703471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55835e8c4675e8a3ceb6dee97af372dd66edce1a8a81f8982315b002db70a69e. 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/KRA381703510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81896871c51c0e52d5e009746b023fc3ed915a517e95a5c61e4154b700124176. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/KRA381703588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e33ff1663759ea0e6f9ca38d29f62ac83be2bbabcf38272780ec9b1cd4aaf85. 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/KRA381703583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d4136cfb62367f8e73f1a035c3757475693e1b8460496c3fb9f241eee20b2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/KRA381703587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718bd3136fe50e2b234c070918d05ac9daa97c8f8ffd4a1ab2f9219f442d4242. 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/KRA401600228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670547236cb414fa1d4a37a4ef3f6bc39e2c8403b18e5ccf012f3830f7a4bb48. 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/KRA401600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460ef413527a271392b61c991708f9f91119ad2fd630ad7ed5056b643f10fc6b. 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/KRA401600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eda08abdafb328887bd61f64be6428d2af38629b062cd2af7e031902937b41. 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/KRA401600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e48b1495de1a2b2178823d5ee865f2ffce4cb63bafb70d19a780db0cf4391c. 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/KRA401600258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b283de67ca1bdeb1428c4e807ac3888576e85098730d28dc16b44ee9f3031f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA401600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb163b7b82585a8b4b82a0e6ec05db7a889d8ca0ee9c28252ab6c560dfed046. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRA401600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44c191d3f1bb3b35f02fc2a24be1d11c9a5f4067e4e1a7c308428c19d368169. 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/KRA401600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8e8f3e133723dde85a05a0e4cd2236613a5b48a43c221f71e765fc90f741ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA401700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd913697898a54d65fe747df01a7eefe4428bbe5d47440597fd1c89b179d9fc8e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/KRA401700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68cf7b5c1c0510814d55c2dd1fcc90aa57ccc4b86d2d1e286d927c95ccddbb6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:19Z), 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/KRA401700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f3f4778cb680771dace65f33895dfd1d10d2ef50129095c565c8c5cc98bd44. 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/KRA401700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b67af8095f06470b23b265a545036ff675b9fe16e6c50fc7ba3d33daef2a042. 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/KRA401700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579ab0827cbc4dbf973a9689c351cc17826e5784b5682b70dd89d2f1b9e8c58. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRA401700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5279ce156121cdc390ccee3ff9eaf2fdbfd5ad42d3e328e4bd59740d7ede29b6. 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/KRA401700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a85cd9c56b4d13282e5888cd31fec9066f086f6fd2895d08ca64d4b51aef965. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/KRA401700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f673d0e0ffc5c1d73d2aa1bc6b48ee967a23c8489a643ce9223c0d98061988. 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/KRA401700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e26f41fe826aff72391fd9922efab0e8cd37b95ffad8cd9c6ce00a4564876e9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA401700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72236f7508d94d54be92481da8b6a1583e3f4eeec66d6c7d23c9c21f129774. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KRA401700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391679a01daa06176aa83f055d7c74bdd57b68c41d369016adc640df652c849e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA401700308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1f334c02e060e736a8368f65b82786fa789456ca25aa11ff20373380172e72. 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/KRA402000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f145198d276fe5b19138556be1ad132039c557225110ba79578d6667354e8dd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:17Z), 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/KRA402000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5488f8f3961d5e8de71a6eb2435980d8be0053523f6d02e0f976dd59134eb428. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:57Z), 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/KRA402000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fcb615b54537afabd609e13de111fbcc2e240354244e40557eaa8b33d80b0a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KRA402000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471c804aa995554673d07efe8748fe59873f70b7aeea55cfdc8f553c4b09f6bc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KRA402100038.