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 0xb02ceb82563139501f384acc72f4e6f9560d2312ade060f2a5945ca41e91601e. 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/94c1733f-656b-4190-b643-ed8d15f885b2.json and https://artists.proofprofile.net/proofs/artist/94c1733f-656b-4190-b643-ed8d15f885b2.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 0x26a5b7d453b704a65029f5ba8640ecda0aa3dae4b6fd5c3ffebdc7a4f17c4bf3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVPA5003602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98adb605c20337a9e1fefe3fb13162cd23ac8a49183f41088a62858fbdd385e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEVPA5003603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a224c52ffbb64c62bcf04c1614be55b61da1d4252ce255ef43c9912da670e6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVPA5003605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e3218ab55315060423f2303c219fd937299d9e1b336edf9f095bef9b881d66. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVPA5003606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeba3e9e5221ef61874702d1199662e133e8eca3f89db3dfbfd38b733ce21bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVPA5003608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf8c7503dd991713ef0466588e1cf11fe9d6e65048244683eea7c8c93c17e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEPVA0100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334bbcb70a5fd7cf49f53d58a61a57f1061911a7ae8ab6c57cbf4b70db720d50. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEVPA5003611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa654efc3cdd2aff2e94337cafad12cf3ec15489bfe328190de36159d97e1c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SEVPA5003613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd6e37ab1f8719463af4a648f90089412ad13c08dc35380263099a02b1e1d2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEVPA5003616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63abe48ef3440b56349795fc6935b45ab1f749a1ade62ad7908f4b9fecb3588. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE2HU1200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2158880cb9a0673cc930d50a548a353068bd77a989c5dc0a08cc9ac54b5dae5. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SE2HU0700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe71071534ba21dd120e3bda2c5f919ef3a5bec22132a74b96bbe4a7557ffd3. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/SE2HU0700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7d14f42ddb5eb40c92412c2ccff8929de920a87612d88bfdab55faf9cbdbf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE2HU0100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad74198323e21f4588f7f9deb09137108cd500789cfbec5d31255c57f3d577e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVPA2200401.
The Seventh Seal (feat. Ulf Christiansson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053ac387bec23943bca42a917b758c9074c69d0559d638d21501965ec0fad7af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVPA2200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f5cf0f361128024e08c52c77f8e37130c93a710446b334021778b5d651a5f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVPA2200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f3e88cfe49772e1a9ba9e576ee8f8113eab8a42039e2a9e82fdcc49b6d3a3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281996516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e10c62ffff2e481641f9e2a008dc367a3a0dd590f72ca55741a21bd6fd6d876. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281996529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73564f52810a1fc9d1874d4c48d8f32f0e726cb1a95b94253f6a7305190a26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281996533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdb8338744ffd4e18713f83bf2a8a9c3a20a7928a947553d65e193134c5875f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281996534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806e7b31dd3874351490c3eada8ad27559962505e4dad07d892551316ed27121. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7281996539.