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 0xd6282e97bee355f6b119f20dc09d10194b132a7b452a39aef9c1cb916993b756. 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/8d705c8d-52ed-45ea-956e-249c72a67dae.json and https://artists.proofprofile.net/proofs/artist/8d705c8d-52ed-45ea-956e-249c72a67dae.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 0x7376e9a03a50f1d9edab4bc111afddaea073df8028c02fd6663f6227047de14c. 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/QZNWT2431154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81607d878618a77d84d60362517969af8c370a29d8c42cd05c02fc67429e7e57. 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/QZMEM2497958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf6c23664c917dae40ce0c5963251523007c5a02be4c0f29daf97334195e39. 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/QZHNC2452632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e675c3d95fafef0d6f4ac21ec3f3c0ff17b9656539e23dab52db5d2bae8c7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72494416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f81d45e42c2dc54aa7a91e1dc239b5927fe1d9212ba37319c31fb48829c0693. 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/QZHN32468104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0295db797634dc1796d68f588a5e8a23b883fb31fae61bcc65fde5742e7768df. 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/QZES52476582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c98cfb39a32f6420d76e305f5f8be8da44be4aa63bca1e36e7ea7b988d9687. 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/QZFZ62498240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afd407f43c1cc344b93c8a14b77c25c1f46114d2db18f0d39241bb2172ac616. 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/QZTBA2354648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc94e340637bdd9b4896cf8720972818488c21c404c29fbcc8878061db15756. 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/SE6XY2310950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fff88c7bccfde53db62af97cbfe095e17006c3a4e8364e40fc210de5f60072f. 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/SE6HN2249967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f8fb33a3ece7fed7b9b54c698296cc1aa43e25c949eaee308088671ca1ad2. 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/SE66N2227355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9406d8333d9907efb3121ce53923a7ca1d389567ffcd774207e8cfee35bb0a. 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/SE6XY2130464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64165277eb6cae82973e3654e5fa19c56680d405829c4c245cc429633d0c01be. 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/SE6HN2183827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2d185bfc0c0a11a5bfdb7c3b1bdef2352450944ff3acc245c2cb872ff89bf4. 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/SE6I32235463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61aa919973c43294443cf22380e39be7989b9d62a87e5c89ec63c0936f0fe5b. 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/SE62M2192508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe495d6119671c2c9893e25a7a9dd2c2d56d2134a2ba8e8859161a74b2c5b7a01. 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/QZTBD2375836.
Calcinha no Chão - DJ Goozo & DJ Percy Official Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9e9bd181dd29e5a6d1a26f0ccc886ae375d5c9cb89dfe30429ea36eba4437e. 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/CA5KR0038554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913fd33f15439de9fa963318db3dec3e4495ff8e84cdbf3510bf69559ab4b827. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2322246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e604a7d9f67bd5afb4f7007522c54efee21d536fb67e1a4f1caa25810bb1e2b. 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/GBWUL1685551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddccd12f503baeac00ab893ff897ba8085609d46a4e028c534ee6ff607fa149. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2322248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b407ec0b6e1e376e4caa98e06712590e1f598d7942a9e05e5e73e0365d34a85. 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/CA5KR2322253.