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 0xcf4f8fdb6c4342cee7c803b794e9cc93bde7ed9ef0690a6264d1ec737064f0d4. 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/0d531001-b2d8-4273-9ae0-191bc18dde98.json and https://artists.proofprofile.net/proofs/artist/0d531001-b2d8-4273-9ae0-191bc18dde98.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 0x88b16a4721f05f81a2830f513db5f101a17759c070d7bd41fbff1e8b96bf3304. 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/RUA3R1936630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88868853f5af9a0ea6b87b32c35f30affd2a78bdd705f314d427bbe6bdcb6255. 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/RUA3R2060426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc074183e63d25aa505b6ffb8cc6926f6f3877af350dd985a10f1f15e5bcfe39. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUA3R2060459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1723109d92f897bb16994402e674dfc81772e681428cc7912f07395376f868. 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/DGA052097444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9020c28cf43ba03826087570283b802b77061777959563c4b3cb3a00a2c61e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA072149432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa593f7673098df3d0b2d364244f396d803e4a7469fac5568d69fd83582655074. 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/DGA072149433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca9155004814a885a80d4f694d7cd0123d34f1a4d0c8c9e85c12f9a7247554c. 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/DGA072149434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad53f1354422c12d639388bc27e1ffe396c7356da442d072c116b88b78c67d. 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/DGA072149436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbafe73f657b610a46aac929ed5f8ee12cd5f568105f1afceb71cd3d261e9e27. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA3R2111799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4316610adb93af07a3fc1f44444c097ea2c388b623c6f138739eb0293541693. 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/RUA3R2066057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e442529b8944c126fe0d37160abca78d96c1baf3657a8b3d5b4d0979892971. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUA3R2066059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dac45295211ddf2df6d01f94b528d137e48f251548fdf80d1f88b4f933c76a4. 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/QMFMF2102838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00471416b20e9867da26035acdf420a6f3f078f9a381540d0d99f97ced8712c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:30Z), 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/QMFMF2102833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c2d35a6af5ba5f437dc4132b60522501b77fbae1a285d82416cd954cda63cc. 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/QMFMF2102832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a78d73e306a2a2ec763cd51fc63bd9971b0155ec98c50e90b933454364605. 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/QMFMF2102839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99fc3ef9a9c1bda3c4a8b58cebc4d55f177107afc33892dc65d8c046545074f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QMFMF2102835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5337318ad72abfa20c86cb491bfc336ae84a2046953a14a2ea33fee52fbf4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:14Z), 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/FR59R2244063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b258dfdad76031d469ba8c3b9ed6a8a2788011783aff3da2070ddbfc0405d8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FR96X2280008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12b4d03b7906f5e920e2cc205580d4ba4eabe509da17bbe65e2a71765ccb50. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:53Z), 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/FRX762271250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb43bd921f35d516461a5029c14ee662fccf31ffd3bd85f551d379157e31ef7d. 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/DGA072243830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d3a039c7ded8214735950f84d420eba2c251a82989b037cd797f7a4a31486. 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/FR2X42398858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfb9eee04507a55d76fb6d5881b6ee7406d8e629e3198802f22907e3fcf790. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X42398859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14492d3999fef099f61af1d3e7c85b36801b3dd37a1ae4844cedd2d0d7dfbaa2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR2X42398861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513d3d8636494e1b6d22f6fe4c9219b6ca9784bc0d01a6da39a9e6022e8b037d. 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/FR2X42394185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72aa99842c945aedcecb21323f549424fa33a2efefdf16ef3f75b2408323149. 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/FR2X42398863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57549f44ae0c6c87ceaf0688e369ebe0fffaa67391ca219badf2a6d89234417b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX202359137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa013102ce168d886c47333143c040ebe5275ab3ef70e59b9f8e21b215ee3f2bb. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX452365769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f404988179004b8c65380ac95b27bfca9f96fdc388ab0cac40d3ff14bd33c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:45Z), 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/FRX872306997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4b1d2ee6c89410c48bec830fb934752e2aceb8db63d3819d56d5512f1a072. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA052343712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e45061b67ec41d3eb66031d3055422c54239bd2827959a4e8d966ec7bc64f. 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/DGA0L2382664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c63aac9c4dc7929c7ae18c2a5b47f32dde840306f7c3c92bcabfbfb157ffdc. 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/DGA0R2331142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7c973c992883107fc39f989210f8cbebbff13bf4b5f02cd6b635cfb9ef8ae0. 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/DGA052407027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b091e9039852c4ba64a781f82c6ac77929715bd059a999c79209417dc8636. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA072426562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906814ee7c9c2028f846ae46a10b54f76cdd46f0a230fa916b628c9096146bdb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMDA72516075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46dafeef77274692c79ef057e20cf89da30d17cf9139e279150d673ed290f9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMDA72576237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2a3549c7e9e634968a38c04fd21c1132045bfc58ffd4ed3cb6a527270eac60. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMDA72576238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcaf30d208a365192bf0827f201964f87765f1274e09ddddad23b198569246f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA72576240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5cda00e901c0b654c7123967dc06a55db6111b9e35fb6c4adb779441ef1a57. 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/QMDA72576241.