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 0xaa221b6868d1f60be8cc6248115e59952186619f834210adcc3a3b50d787841b. 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/5a1dd717-b302-4282-91e0-7e134ff4379a.json and https://artists.proofprofile.net/proofs/artist/5a1dd717-b302-4282-91e0-7e134ff4379a.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 0x34b5088dc66df8b6c25c89aaf6d704e256cfeab002d8ac5fc87cda153c335d57. 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/DECE72401270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4701cb07dd87ac4338437e209149c3c932e3222cb289e0fda4ecfc238bcee7db. 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/DECE72401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c2fe8ddcc0f7d507de7a6d6854cd52fc58d5b0776cbd2539dbac427a5213fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECE72401834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c5d93d0015d79f43a5f2e9eb668f9b611d021856e09aaa725854b16cc01acc. 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/DECE72401835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4837cdf5c50b26f4adc512c4ce47dd5f36e948606e4cf1a85bc56de24c7f8f8. 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/DECE72401836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57fa3e1a58ee769b8bb937c1b1934c2634e381ba5e2219017fcb5ce9c14517f. 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/DECE72401837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d334217d14f8af2a8b2f2e3df01ffd5c8b29457d7cef89b4cafa41d1f43023. 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/DECE72401838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8045cf98c7bcbd3c45ee2e3e1e11fab6f29b9fad4e0562e411a9984512e466. 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/DECE72401839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592e7b17183c4220f3ef3fd4ec6664d95275efb0ec299b1a96fe07e836482e7. 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/DECE72401840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7683c7e997110202fd011ab24d1a5fc1c17a1cf44b263258bec522d41e9f39fd. 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/DECE72401841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab79de4569a589ce71938aadb3ae8dc9fe99fffaab833432ad201159f9231d. 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/DECE72401842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369a7e0a764c3248e47faf475e647d7c61234e03848000a1af846818e1cf5b0. 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/DECE72401843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452706b95656a97118626ee4c2cf355a0a62e1cfb75fce98b58dec14c51f5d. 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/DECE72301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa83c046a33e3e256d484893fc07482e5fcf0bbfc619e456be04a57c05f8e2. 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/DECE72300679.
wintergefühle 2024 by The Circle Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452706b95656a97118626ee4c2cf355a0a62e1cfb75fce98b58dec14c51f5d. 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/DECE72301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf44f0e457d44f4e0464ecd15b396e6528ba5225566f609eb89b878392d52e. 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/DECE72302740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa83c046a33e3e256d484893fc07482e5fcf0bbfc619e456be04a57c05f8e2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DECE72300679.
sad beautiful songs by The Circle Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452706b95656a97118626ee4c2cf355a0a62e1cfb75fce98b58dec14c51f5d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa83c046a33e3e256d484893fc07482e5fcf0bbfc619e456be04a57c05f8e2. 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/DECE72300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452706b95656a97118626ee4c2cf355a0a62e1cfb75fce98b58dec14c51f5d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa83c046a33e3e256d484893fc07482e5fcf0bbfc619e456be04a57c05f8e2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DECE72300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf44f0e457d44f4e0464ecd15b396e6528ba5225566f609eb89b878392d52e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DECE72302740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452706b95656a97118626ee4c2cf355a0a62e1cfb75fce98b58dec14c51f5d. 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/DECE72301636.