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 0x1ae0597efb14e71c94d9549fbd083496394058a1af91be550268c9aaca9c9edd. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e325a739-220f-4cdc-9f37-11c0ce794b94.json and https://artists.proofprofile.net/proofs/artist/e325a739-220f-4cdc-9f37-11c0ce794b94.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 0xfd5dbdc6d53f340776497529392ba95a3cfcfeed87422f76e0b070bd8087bef8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:16Z), 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/QZMER2559616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfee4a47efe8e23875b7663f93974d068028627d9b5a011ed0bdf6ca4d3043d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZMER2564221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c41f90a57216a65789d3dae2bd145f8e38381bdc6f348033c28f64508cadd0. 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/QZMER2562531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419813e0dcd755dee1dadbbac80af67222590c3636151557d4b99272cba77753. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZMER2564222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b37e1c8d3e9fb1d152f7d55d00ed8e48c3c80dd56c06f091f33e9d8889fd47a. 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/QZMER2564220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acd02a0dff0c338fbcbc15c678938036d08dd47d86a8dc0f231619cedaa905. 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/QZMER2564227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7870bd8ed10422fb273dc8c84f6ccdf6addd05f1b6675c9883d6c9bf495d82. 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/QZMER2564224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d245c77b920de6c326d46e0f9a8ca1165b74c8f7ff0047ec5a47d4d6f989b0f. 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/QZMER2564226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f35ed543be41ce52a9ec6b11f12fbfa6f479e2e290bd99171e3c1ee924fc7d. 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/QZMER2564223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c20b5fc026edab0cdaa7cdcadf32a793267a59568f2477ef0b1e6384283ea04. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:35Z), 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/QZRP42564423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b0a8873583a2a49bbf94bfd52aee10b3abf654f6f02f366b903d185a3a390. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP42564426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36805871e399ab6f1e778b6dd6401bee15f347213629829954f4022d603ca23. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZRP42564413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd38d52fe4060243a28afb55e15b935a0b9ce85a6537c3b4a419322fef099c. 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/QZRP42564400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85b46c8c05c4d0dbb15dd648b44e00c18f9ef52cc124211533af4f297310ba8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZRP42564405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147114da4f9046ef5c5f7c59eca301908f76cf1946807e8c436091c7884f9fdb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZRP42564401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e881c5821b89622edaa49116d2b86bbcefa017410108f0687e8b693f05a68ee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZRP42564403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622a92662791b28f8ab8cb89cb91c511845c40b592b9afe1c6f95c3501818c6. 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/QZRP42562631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77722f2830a695e82253bb3b4e40b28c065cd88de1178ecc80fe472806e88331. 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/QZRP42564430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d87dcc75326ce68a3b3538f115aa285bb893b72ed516a8d4f37cb5e72c4569f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZRP42576758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6680f2330b9e10ba12db9bd62b49c75f298b39da03a15b80e2272fd2b9444ab. 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/QZRP42564427.