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 0x6a3e896a03bd6e56a28471f74990e118664d70226fd6bbd6487bdd0c6c144e07. 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/c0c9eb35-0f2a-4c3f-9893-755dad43cc93.json and https://artists.proofprofile.net/proofs/artist/c0c9eb35-0f2a-4c3f-9893-755dad43cc93.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 0xab54a746f67a44e1bdb6eb1a874fa5a6296237eac37daf029f43d4574d5bcbf8. 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/HKE022373081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff6e2ca222286d1e06ef50448096b82ac0e4754ae275b634d949375452c3e2c. 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/HKE022373082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630306a2180b836b098f0728c8b2c1a426deed1d0218a485679b099a028d1bb5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:44:20Z), 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/HKE022373083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3245d53430a870fb786d3f67c36d84080feb89f6dad563357d18ca4f791d83. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:47Z), 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/HKE022373084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0d3ec6a85bf8ee2bfe35800a62a084c9251f8d7d6d3fc26aea9b0bd3d588f6. 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/HKE022373085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19540ce4791446f725970fb23366c63fe8a918a681088d42e2a70dfb181faa24. 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/HKE022373086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e3979b93b7bdb2053d58f7dee4aa65ab3410306ebaf9b076504407a1126636. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:16:15Z), 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/HKE022373087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e2373b0cddd77863e06db0bff3a94054ec4820128957edad2d2aa0a91dd0a. 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/HKE022373088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea33c73352f0463ef3fbac5f1fb5d5970a91b53a836e68eba8542fc67aebf21. 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/HKE022373089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665fa5e0c2c49cc2c2bd5b7c7aa94966d4a8df89117f0d82f935a33c03fe80d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:24:59Z), 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/HKE022373090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9c937f0f53373cc292d9470a7f2a8519ad80b67e23769301d919f5a759d7c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:58Z), 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/HKE022373091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab40f7b281065ad50e38c9873c8f111ce5bf25f5afdf65516f8229db96287b18. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/HKE022373092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802cc767fd2d5678223d8fb7261a4a58f774b49938a8b107e7efa8c143eaebe5. 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/HKE022373093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30760510a0a79225640947336110cb2353901753b539a14a17747c92f1f35fa7. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:29:08Z), 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/HKE022373094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc873b8f389dfe99dc05f546232f522e9ce18e5552534504ebe79a6d179dba4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/HKE022372644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5416d89f92c4f4b539ccb6679ff58e013e46ba19c4b2dec629dd8fbb654029c6. 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/HKE022372645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa513d6564f81a1eb54896d5785e7a6035fc839c3ab3991a06296ba2a5ef7a5b8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/HKE022372646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ddbd5f834c86826746e4080c5a86e6e87e623c20477a698afe4a5bd0eddb0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HKE022372647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fed6e1a86cb92f7cd3609c93ad87525e1d4f522d734575c54d83407dfcc961. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:09Z), 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/HKE022372648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19698065b1c9341fa0f0d214d2063cbebc76beccb58bad26bd4e0d19c5611d6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:46Z), 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/HKE022372649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf77be00a56c4c310794a5506b9afd23c05657a0a652b2f54989e0d555798d14. 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/HKE022372650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74037a0082a144b4bbde05397f5c69a94850f540d673fcd7709b1cf3d010392. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/HKE022372651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368597e89409d139787a6b5eae2e5e1095aa73000b7d249278cd83e93309b71c. 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/HKE022372652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0c9812c4670472228172783d3228ad0fddcdcd197febf4418fad0d4c517c38. 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/HKE022372653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc2b93d1858ebe972e63fdee865a52f724dbff80e53a624a2673ca38e37e75. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HKE022372654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6783ede303ba34c51325cbd231b9b156f1d9c6a1f02971f232c1c82735f29fd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:38Z), 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/HKE022372655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25055b21181acbb4f1ff2ed1f354bd2a163c048b74aec2c332d5b39f3eb45cc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:34Z), 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/HKE022372656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fdd980acec88cb8b0ecf08dccfc8d6fa38d17b2af4990a55c08e02263d7304. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HKE022372657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7893b4ec7c92393fd7d3ab475682fb967454f5e66fd2c0fc39ac9803d18ae1da. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/HKE022372658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2440d80e340ac9d2fc591734c3f9232f08d5fc429fb1fbcf3592628ee2ffb4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/HKE022373095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6269d3bde8c9b3f94e3d9d9848318992703e1d494592e4dbe9fad220cf16243. 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/HKE022373096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d28f92a416e1fdfd70a67754da383cd112828a1dbee4db6ebf7904aacfc569d. 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/HKE022373097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32e85a0e9caa1035ed6fa811106a93557acffe67b0b50656a825e76f927664f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:15:07Z), 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/HKE022373098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9fe04ba710b49c716a0e20caeb3bc35e6b37c3d4b43424be74c5cfb919505. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:47Z), 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/HKE022373099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e71cef4ae4c35768589a9d376389c325fb74bf927170587c129aa3d2a8e417b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:06Z), 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/HKE022373100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b151ab2eb8b8b40967f1e3d1b2c0960d397bc3b478072f696374825e959880. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/HKE022373101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9c4c85037993915f0c859732bcce2ec21b3f8e0aa2c0557f4fe47fbc3356e1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/HKE022373102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d34e830c35434d5aa3e9ec4a86ca56a2dad4f33af51eab9b8e4cb708ff81c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:16Z), 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/HKE022373103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383a010e42279518b419901ce4152a0249d08ee333f596edafd6280177242a6. 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/HKE022373104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92390cf5908314f625adc43ccf6a3b3a954eb47ea9f11b127d3a2987d2cefa4a. 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/HKE022373105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8524f57ab73e4564ce1991416972c815717afde8a612926e2d41ddc1204faf. 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/HKE022373108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de1613e9c88824284001cf0724ad2b40f4ad925b0b0911fd1b2bf5c722fc87. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:15Z), 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/HKE022373109.