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 0x539442d7d32fae9120f2b8829c099d5eed3e58eaf36d3e9cbe45d461af1ce2eb. 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/f349770f-36af-47a7-8839-e8a851453ceb.json and https://artists.proofprofile.net/proofs/artist/f349770f-36af-47a7-8839-e8a851453ceb.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 0xb6515518318a92e6a17a5af86ba4e5bde5db890c520a93234bab4ccc5075f742. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:17:10Z), 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/COA921702002.
Alt-Sessions, Vol. 2 (Versión Alternativa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61b7c1c572d8b8b57c2294570867de91947b7f6877b4fba21fb1d20f11c3fdb. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZGLM2088950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941d3cf662c7e29c33dfe75f626436e1b98464c9941f90c3f7c5927c263682a6. 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/QZHZ31983457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e38996cd38284ee9247c7cd4bb8d844e76bcb6e0df036e06aa8ee8a5fdad116. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZGLS2026936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48acb5826af9e58b385b7069b5aa0185b8423a26c4c1e3b3432a2a0bc984a8. 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/US7VG1803200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6cca2f05b4f302cf8b5bcb3db63bf42f8f6c1fd7e2ee0568a2feeb39f14a5c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:38:41Z), 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/US7VG2014499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8af796ca34e8aacffc96760e7943614ce44ea4dec554441f7711913cc839c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFME2105359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c04d70e332fd2d17fc3c90ee05dcff9175d0a6d56ef275e763b57ed387b22fd. 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/QZ7362200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce75a785120ca11a07093fcfd20ebcce709ad92f97c67224216a9f95b6409cf. 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/QZ7362200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500dc0dba61ffe1222f7104e7ed73a4132b3218da6e78524748b3146097e8fa9. 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/QZ7362300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefea4ea3cd7367aedcddf3c816cbb10de3e1dba77ed4f413c5741364af66707. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:01Z), 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/QZ7362300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e138cfb3388ee022b3874be8845b3d9195c3e81c1ae4f72813fa0382ad730. 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/QZ7362400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefea4ea3cd7367aedcddf3c816cbb10de3e1dba77ed4f413c5741364af66707. 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/QZ7362300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3555f9002d5622c32be90aaf0453c7e425fd648c4252dc13c1bb95b773ca6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:00:00Z), 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/QZ7362400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76067e0a5851c63e0931852c5bc98a7f8d8aaed2af57b65f331a54096a5eb13. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:22:00Z), 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/ES71G2415237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a20968e698c43c547da894901780cfc844ca074cdd0fbe966aa796b3d82951. 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/ES71G2415236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5659c5852cb59596e39f8f47c6e7af35a8dd2f10f94277c6fe7b76a6930b012. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ7362300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e138cfb3388ee022b3874be8845b3d9195c3e81c1ae4f72813fa0382ad730. 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/QZ7362400069.