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 0x28fdb0ec2bfe6d92646517617cfe12042d81cd849a0c36c01203d41bb9b00270. 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/68343a03-1f7c-437d-ad91-e6c4986cd754.json and https://artists.proofprofile.net/proofs/artist/68343a03-1f7c-437d-ad91-e6c4986cd754.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 0x82dc4ee805c2130762461471dc886232bd38d85c0d6355c1eebf9d5c1bada86b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:14Z), 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/QZTAY2475400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e313cc718487a29dd74e2913191eb96c43365fcc59300bc0d9da41dd9dccc5a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:03Z), 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/QZTAY2475402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7640f5b4434e2f84520bc58dbf7b89963e69cc7c6839c510cdb5b92b6c15a09. 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/QZTAY2475403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b068460bb0aee5eaf70b58dec35ac9ba5ae1b5362951d3b440acc7149f07c2f. 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/QZTAY2475408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76995b199807e700dc8f2cde004f679bd127602a9b13aed29fd468e4381a5787. 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/QZTB32497170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9226847ff22e5df984bddf292d21009385ea80d011ca5c5847a3cb4837a296. 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/QZTB32497171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf95470199ad9cce306c8ca6c2a003927a4febfc4fdf2bcda199d86c930f41e6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB32497172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d63efff873242c8ca3cf4ee692d5689f35eaed7dcfe960b12de39b8cd24a3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB32497173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d615d7809bf7345083b41bb99cd00b4d3a592df2562f99de25e73aa1b606b6. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTB32497174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89fa8d8b818497751188fd3e714cc43c72e5eebb585cd235accf1c58d573b52. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB52443704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f67d1ac2436683fdbca32d4b37b79397ddd26ff1159b6706b3e7601841fd1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:47Z), 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/QZTB52453832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf55da39647b2df850b2f4ed3f1c916c4d8945f993c1ca85fa39a213b10d05. 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/QZTB62430107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a0bd30afe259fefc7a192d149454dcc5124e10c036b4d30008615f6acf9f24. 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/QZTB62485660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405e0a693e824b0fe5a894794f4cf8c7c1411fc292ecceffad2360c3a9289c27. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB72457188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3da501f006f726442e0657fae81039ddffdcb7815d1eb080c3b582f15b3696. 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/QZTB72456089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2ae01e0cc2616e86524a14224242c3c7eff8df7a7cdd2a632500a33f53c57b. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZTB92447146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37899c0a3bd6794997fcedefefd6b04859005b5a49c0d76a0480ba4e25d4cfb6. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTBC2419758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e7739265583cddef1beebddf62697950779668281030c4ec1c2d31cb7ef20. 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/QZTBE2491759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5490b48eb607a8c5deb383851214284bf483d91417c4593bb4cdf4f2b7bdadc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZWFF2430630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285e8b1b9bf4b4b636d8ba1ee84d78cd9a2afa98d2d173444f66d0620902b3e. 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/QZWFL2435568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42e292ae35d8dcd3bdbfd83455a69ecc9b861a56c40ab2b9a9d74aaecfacd38. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:14Z), 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/QZZ7K2494386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87fa77b4bf848e7d020e36807c42a6ad4b55e91ff2d8019b2f10898700cad9e. 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/QZZ7N2465546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fe3b7af7012087851935df3dfaf3299b6c538a09ec70b5d277feea8f3430bc. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZZ7Q2419567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3918c14b72ef574a17b9d80b8394042e8d62f2bc2d4fae16c16d7158fb92abf9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZZ7S2460984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497ffecd10f7dd6d8fd1068f192162122c310d2ff966314af0b9ec17aeff8a75. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7V2455564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1506384d942e03156020e7e5199e19307661c05a2ce49ea590565994cd21405f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:26:46Z), 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/QT3EX2402841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fb11413e84334ce2e5230df3e0571c19d15911c710f00e400e718876529488. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3EZ2430612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77d0ddeda651873470a7b7476b67986cfd071e04941dd79ee140e1a2efbf3de. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZFYZ2563037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df7dc043a283527f7ab8e6fc6f42a231becd9f0a873561cae67983af01adc2e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZFZ42530414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138a7e66f4bd7a4651a157d1fdde2ac860a268fa586ee9403a75aa3ff27e59f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:32:22Z), 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/QZFZ72584576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ce3af0f554af743a2c933b4f0ce27dcae89d84a1ffaee454cd28171e93dfba. 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/QZDA62588353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e35afc5e27501ed9490b571a2f46e286c5321401a3a2aa5d16434c0ff499ff. 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/QZES52501995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac907a37c3b3df2515615ec15414d233ac2e53fd23b25c7cab7515351ac8555. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:09:09Z), 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/QZES82509039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda266620013995b3f6bc4fb05fde6dd93abf70a483461573bafcdd706ce1c14. 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/QZHN62571847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c94511cf43f0f154c3a79d4f261fce7b966ca01d51d19fc98bf019ea786093. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN92528531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c92b6c4e02c56ad7da33f4e811a682ec8a7c897e6106ec0e3030876a01b981. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNB2589435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4049854ab191bf0935f6079223a0c6f70d7df6fda8984b3d740c4258705a53. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6H2561195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac4bda30d97f4dfda3f7161a2df1d4e20e69d2944150d114dc21af009f8d75c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:17Z), 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/QZK6F2595604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b106cbd647ebdd53ad315b27ca69fabecbe8c9148fc4799ac60455fb6d76de2. 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/QZNWT2575337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2d680329fdfc003bc8e39ca0fd04ec9888dc5a9f85b79eba45feab3f7809bb. 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/QZTAY2530528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c51111f0c40ff588254fabf7967a587ca6435d7207f06c654914201a3f93521. 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/QZZ7X2508706.