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 0x353ebb159fa8d91a5ed8f154642b24e8b745a1ba98b70a6226349f6766da47ce. 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/4a2a54ae-33df-4cf7-b8d9-afbcb1ba2974.json and https://artists.proofprofile.net/proofs/artist/4a2a54ae-33df-4cf7-b8d9-afbcb1ba2974.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 0x596601cb41c12bc41a0852f0b15d8df515ff6fd62e6208c7ae840db9f0c8bef0. 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/USZ4V2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729cec5698f0be2b98ea5e12c49deaef40d3242f0ed910de5238d9fc21ce3af. 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/USZ4V2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc901ea9276faca474a138dcc8f5aba972bef7f353dac11332fb27796c13357c2. 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/IL4612400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef961e1eac01018b414b56cf434b6f2291b5e95c82cb3ce7b251c6a39cb91ab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL4612400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18146fbf7f273e77a913d4c3c6f60c95403e68b46e2f35a164675dc3550ff16. 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/IL4612400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816e378a534bde3037fe53f493a6148438c354daf251debc69215d0cf382072e. 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/US83Z2351397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d8cc1b3636cf9fcf866676ecbfc8c60d3dafd27a1debbc453748114cb399dd. 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/US83Z2351398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d8cc1b3636cf9fcf866676ecbfc8c60d3dafd27a1debbc453748114cb399dd. 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/US83Z2351398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef644d2452422b6eef1091201379c0ba49ef484637718ac57eb811577f23e501. 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/DEY472378555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729cec5698f0be2b98ea5e12c49deaef40d3242f0ed910de5238d9fc21ce3af. 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/USZ4V2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a09633cefc846c5b0cabdbfb0b33a0a233e3e5e0000954c1633247c3a36479a. 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/US39N2309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e4cdf2f1efbbfe0188b151520889c9bd0878c0d5eeaa559257663575dd57d6. 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/GBWUL2306736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e282b1e20feb8a4717d5554dc48226608ff0d532b0aa400900f826133917ff1. 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/US83Z2318215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08893acfc66fea92b92f0bc8d4ca6b89de6d52b1f2cdf4d3451037f63f02305a. 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/US83Z2318216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fc50c691ca0317a1fab1b3a30d5ed695142395fc3d796bb1892a57e9d4e6dd. 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/NLHR22300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3381f5e8d597305f3d77d880f4403fd6812e1e8f9448064fdcfd23ef294c1c4. 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/NLHR22300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e38d5c11e753a6fbc44d582a86385ad59cf76ff7aa4d88d4acebab94b50f3. 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/US83Z2308824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d24292baea6cfff2dbae6fb7bebd131be5bea4a95daebc6aadf94f2f3f8656. 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/USUYG1559560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535cf0d464434357912bbe3624f046137329da3289a1ddd3314d2993482182e4. 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/USUYG1559561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c1edb14dd04cda772fe8d199cfe2aad8e2df9efe913eaa77c699f45eb156f1. 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/USUYG1559562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a8bed05a1803af7cb13dde5395d4f96ac70941f2552588b5f77ed4296b8b88. 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/US38Y2404261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfbeda3c6ee9eaf50732be467f98b441d232d986152e569afd4cdf610404691. 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/US38Y2404260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd516cddbb53dd207cc3edf809c04090b4c00d9702c48b9bc94aee07b5e518. 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/US38Y2404259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bca18d596dd91522f49d9b082e53697549e0bac83e27898cc2ec9697db75e30. 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/QM7282372008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75483d65423a3a920970900354ccca65167bcc5dc7b7b0cf666a232c53a4f744. 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/QM7282372009.