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 0x190f40cd6441f29ca596e424cc32af0032a51d19e19c8e20c2ef431f678de5e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab5a501a-17f0-446a-ad13-4bbe6bfe9ee7.json and https://artists.proofprofile.net/proofs/artist/ab5a501a-17f0-446a-ad13-4bbe6bfe9ee7.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 0xfae537b4507baf16452abf33015747b741c0615043117d9414bf94674ef7495c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZJ842000398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a0a2255e1d4f8c15a302d80f37da2bb54159e6f2eb7f1ac1e2479252bf377a. 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/QZJ842000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2af941f484823a15c8288ba191edc120d57d96b9ccb18ee7f03fd6397267fea. 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/QZJ842000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afb06268675c7b068897540ad5667fdc8d83dc30de4f3a18115b88efac88c5f. 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/QZJ842000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2de9392a06556fbf12c07ceaaeba46a41b94fae29ede0faaf541c8a4a68923. 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/QZJ842000252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b57fdd866a9c57e635546eb34a5f71dad306f3f65fbbbe7ef9a6f7d61d4656. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZJ842000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9003ea649a5ac6ab7b153eb32e74f3afc6418b9213435902bb448b1986fdd9ed. 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/QZJ842000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5b6082111518e09f5385ac3d6f3854f2553845b3767d7e5744196dbf7203e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZJ842000248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285fe094ce610faafee043ef7f4706e4c1da717d8833a366d7f9579a61c4ed0. 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/QZJ842000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c157b7c5bdf5970f9990beb948c3464cdac0ca0590893e2f4978bcfb1f5af. 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/CA5KR2323405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba8a567ceaee7e2678f3ba0f3a050484da98c1fb7cd90865f4e199951a8f832. 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/CA5KR2323406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c6c43b866dfcc0043a104c7d05b077d4ed052e0f90ec960f1db31a994c648d. 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/CA5KR2323407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fff1118f21510ad8ce975299585521ce96c63bad982fb4e5ac7e9898230a7d9. 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/CA5KR2323408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582251d53a6a4d58cc53354fd92ef94a60fcaab2b5fe9a39b3bd9f817e532ffa. 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/CA5KR2323409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd606b6b76550fb0037c6638643c501cf0e742b31cfc7b40224a3a4a2023da7c5. 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/CA5KR2323410.
numb (feat. blackbear) [slow + reverb / nitecore]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010582fe43e1aa7dc9c3c9056d8e9abff94bdc8f6f77c1f26b8c11f2eb9e0cde. 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/USLD91741962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3026942d8a1d5b49f955d1a6f757ee3bebaed105f38cd5e2a064cc37717000. 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/USLD91741963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ee78eec24cedf7bda3f7b4e15164824f27ae4552585d739d6ada612e084687. 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/USLD91740574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ee78eec24cedf7bda3f7b4e15164824f27ae4552585d739d6ada612e084687. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USLD91740574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a1f240a5c6a2069c0420c9e066dc93ec4214ff76b0a4c0ac344b25e564b197. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91740575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe184e40c1146046af2a07c2f15eb2cda6a8dc0a65707ea2a27157a483590d3ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91740577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713cdc96625f1ce704cb00e55bfad0d5789646482e50557ab74c56571013b3b5. 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/USLD91740579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe184e40c1146046af2a07c2f15eb2cda6a8dc0a65707ea2a27157a483590d3ef. 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/USLD91740577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a1f240a5c6a2069c0420c9e066dc93ec4214ff76b0a4c0ac344b25e564b197. 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/USLD91740575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c285ec7a1d22fea2f956d0e1f1be47bd673e70af5ef891931ea0840d4c2eaa. 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/QZ93L2029157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5814560637a3fd36b5aedfb6ed3eee73fe9887c9b1c3478b0fc8b5fff58ec3. 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/QZJ842000722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6190a2aaa626cd0c84e09c79e0e09768eb751a0f1f487e01fcd4c6c7d5fe757f. 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/QM4TX1945660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae537b4507baf16452abf33015747b741c0615043117d9414bf94674ef7495c. 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/QZJ842000398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62f308c1eda044bb490a1f5364e558afe5f484df06c28bd37095a91c65386c5. 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/QZJ842000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae537b4507baf16452abf33015747b741c0615043117d9414bf94674ef7495c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZJ842000398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcfbce276c6bc6f3f94c2422d79f9da5e565880a52fcaea607ae6826c18904. 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/QZFYX2006214.