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 0xda54fcab822e9d2105c6bf4200bc58cfaddf972cb4f5e15eedf4cdea6b7bef4d. 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/3d51e32e-7606-4df8-a1cf-f9c25c84f112.json and https://artists.proofprofile.net/proofs/artist/3d51e32e-7606-4df8-a1cf-f9c25c84f112.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 0x2ff22982e215f776356b9164efdf044ef8208635f453e3e24d7e954bf73c4d48. 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/BRUM72401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece2d254dea38cb214c71b1aad2b70f3781964ead6c17077d9a728c5b4dd27b7. 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/QZ5AB2489315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c40ac2c8702c7ba3ce8182387b9e709b7c8e21cc4a439296c67400fa580e685. 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/GBKQU2397948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaacd8859cb24e8d1d0d254aa2c671e0f0c7bc20597460ffdca755ce27295b8. 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/QZTPX2388259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdd85bf7a66a0d554a9410865b5a76cc649ff203d10f4495e0f1bc6e1e50dc2. 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/QZNJY2381543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3442494e82f226ff2fa36983cc665d1c24886eb8af54fdbcf763c0424ee8df8b. 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/QZGLS2397520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794834fb84a64c2f4e2358c8ea250d9e9c3ec6f7f5c096f88d94af3da88aa47e. 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/QZGLM2291929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a271c5113799cc7a150ab7766b54e830fa0503073ac5e27d4d67d30ab1526ae. 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/GBLV62120717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae51cab0ba9357c64b5d1f7b04899ade7bd645e007cad4cecae63e2bee5630. 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/GBLV62119853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759acfe69e999a0138b5c6df81e0486ab2174331e95fba57e1f1954a5b8c15e. 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/BC1AU2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d333eef8f6603ed062df1869c8b58fda9a8f88fb4e3db50396ac60798b8795. 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/QZHZD2102195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4eba105db5f8360ab83216b183288b96a842e8a3e10d7051f6d553498858f3. 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/GBKQU2157994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825fb5f8906657d69d1feb5067f2db52f4ba446aa6999d7822b2cc907c7bbab7. 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/US83Z2123535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95abf73312e32b1ef645c24d431b887e9314ebc4fb2e882ba6f028de5287fd24. 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/GBKQU2113688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab4af8c836af6d1ea680e9ada4271f83d36a9b2ca541c4b38efb1cdeb457c55. 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/DEH742153249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfffdb484604f0b425921f7edc61ce77b9cdfbea252e45daebb5211bfa64d40e. 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/QZMZ92062131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9bbd1d1cc9f3878c1de4ad356fbd58dd2ea04584cd7ae836c852c00ac01d3. 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/BXHBP1900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2a140dfa97e7b90511672ade3d6b1a36edbb5cbbf50aa258fcdd19b6d998c6. 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/QZHZ52065581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84923cedc4cdadde0fcce3856dc9d8febdd37a54088d440176a408128b4bce58. 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/QZGLS2036604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0228e4eb3efe00b001d95c119d2effda8a3807654573f07fbe512b3ad2f212. 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/GBKQU2031834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be08b9cf6a23d90ae449190acc8a987eddf30171d2dbf3377b45b49ac460fa2. 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/QZGLS2011219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68584e4572957786ab1f29d233dee1cb82802903778a3fcfd9657f183ae0553b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBLV62119852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3421cdb5adb22c14c499a43ef5a16ba8f3f9b2e614b8759fcfb308ebaa4d58. 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/GBKQU2184926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb05e572afbe5ebad09eac6ccf62d31f982332d7f0aa92efa947bbe5dee54bc3. 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/BXBK62500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e8af5364d6e3feab9d609558c05e4960b716a8788c246a7cba068ab261e93f. 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/BXBK62400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb870a230fd5d4cf2f7e35438452a7b8729ab90f8447628cf2fc74e8bdbf2a4. 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/BXBK62400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c52457781c268e5200464674ea902801901263d1be5154db761570ad542627. 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/BXBK62400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62780f75bdf68241c2d438e052f45a339fc6def913210902afdaa04e0da19db. 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/BXBK62400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247888a93f845df3bc11f2fcd4cb8c463a2a9c187106aa192f7661fc4da3d18. 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/BXBK62400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f304e249575621c0962b9434576550c93a51783d8255f556b775d4c907d9f. 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/BXBK62400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2439356abcbe97208bcf5fb463fd27263ee7a24379210e7932b5cbcabec67c90. 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/BXBK62400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9d415bf23cab3d4d30623fe2b89c82e475ef6955ff72c129884a8752c3af6b. 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/BXBK62400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1635ec33141049142ec9363813462d59679eedf35401ee53b6a6a64e62bb5c42. 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/BXBK62400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fcf2fed7effc8c512e5733a6a278385d4ac5548c32e2bc6cc8ef3ae2b5d8b4. 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/BXBK62400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc3c89a5b520942e21b57182ea6159a06bf75fee955a18827945cf4088fad07. 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/BXBK62300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967ccb7510121b81f20426898957b5c68bd385562772bcd528b66d175e133b4c. 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/BRUM72500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0607e1d2a21b85637fc11579b58bb47ebd6c0be1a40be4857d5f8d825b4ced07. 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/BRUM72402176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aff7bdffa0179d116b768928374c79c40dfcda3f64936d9c410fb69d82db8c0. 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/BXUWJ2400019.