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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 0xfb176ead80366f342f3418201f827d5f240e92ea5535e240286fc279f759393c. 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/79fcfb0c-2e5a-4d8a-8215-330f76db57e4.json and https://artists.proofprofile.net/proofs/artist/79fcfb0c-2e5a-4d8a-8215-330f76db57e4.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 0x5795b0cac6cf280dcb8b513ad0a6283a9e01e7be69ba49c419e9a0fc96cc91be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEUM71100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40a79ee40b3936dc4e548fe44367a2a680cbd1976392fb10525a0a2f086fc1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEUM71100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe823175d2b23629f2f4344c0eb1e1fab0007d67e8a8adc0fb674f3f1b33e8ea. 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/SEUM71100970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043ee11b1cce05cc54c28bfd95b3b80c7321771a66010722cc2514882ffb1fca. 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/SEUM71101192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144a4423fcff7e715c19e7f4802f9e6b55ef3a06ef1c0a36849aae14e58d0e0e. 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/SEUM71100972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbb0771258bf94e946a0f350532b08f9372d8df13bcad1d4ef4efa87dd9337e. 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/SEUM71100973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db41fdfa7ae1439c38ed8a4596dfd557e9f968b88e87883af69781634e91ef7. 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/SEUM71100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb37f9a9d2916444e21e80f62d98e4d3d1c491f5f17768a3dd87c9bfdc852de. 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/SEUM71100975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7defca006c2522c46f1e2362569ccdf6ef06435d7b9618bd84ae1c547677d04c. 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/SEUM71100976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093539dd95754449ea5d43656e4aff5035c4c3a6d51c4701ab1a803c150a68f7. 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/SEUM71100977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963d29ba77f1b82d30ef0370fc9ddfe251076a80f9b4da3c2fe76d37138e250. 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/SEUM71100982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fccdc4727a0128b7388f012e15fdf5326469c78f95ca03f467b9146ab6d266e. 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/SEUM71100983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2139642caa94b148a15219efe6280e12c8624d92812dae694a4926356a7c884d. 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/SEUM71100984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fd73756c28333875575c6ce1eea767cbe033c9cd3b9ff5bf86cf63474cc0f4. 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/SEUM71100986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5795b0cac6cf280dcb8b513ad0a6283a9e01e7be69ba49c419e9a0fc96cc91be. 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/SEUM71100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40a79ee40b3936dc4e548fe44367a2a680cbd1976392fb10525a0a2f086fc1. 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/SEUM71100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c94493beefb1ae3fd16ee3f6b674d115909f502d9a34506fc82fd6cb2e756d. 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/SEUM71100987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2431413f13422efaebeb45dd76c4565044f6dbde19a870db2cc7a534c8e753d3. 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/SEUM71200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa863811c79c0df6bf877f81b8e4ecd8699fd59c8f3d3f2d2125f3bf2ffa3d043. 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/SEUM71401745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560351838d48003d0c3d77792235f91f5322b80a075d957bdf5c01ba0ea480a7. 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/SEUM71401705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e01d67d44410f0f4e189b576c8f3c88b78601aaaa658d64e5251e7d62c11f9e. 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/SEUM71401751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267348af1559df14599455c7b82c7b9a6c3515373083125888334cddacb6c6ef. 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/SEUM71401970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2ecdafbf5a31c3304cf66dd7d9fd182185507b04fc8c2f3b013a2ac02abafb. 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/SEUM71401760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0fcd5c3f39955af0e7857c4fc948354e2994c2cbc15bfcc0cd7ca464e2abc3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEUM72000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a34fedf4345eff98f2005b1479f2b2ab9444f77e93c887d3de56b1cd906e1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SEUM72000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e81e1fb765bb9f3dcecd67aaed1ead2e43d683f41e4993e655a2ce7a8086ab. 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/SEUM72000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31994c8ffc2803587f1956a1cdedf445c8001d4cf58c738005ccefe74bb6e3d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SEUM72000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8efcd6ea0f8ffefee7780440877a70f243e8655b36e5aa3a17c4696fcae358. 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/SEUM72000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fb87e1cc60bbbb86bcbbe11ff9bdb168701263a71c259d3ca3e2ffdee1114. 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/SEUM72000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe7b6c932fd752603ea81c9465139b22a10c7a54d8a734e907a65056b8b5aa. 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/SEUM72000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033bd61b3cfde21360e389b78a73537e7ba59174a498810fe8e4b4a449e6c164. 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/SEUM72000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0fcd5c3f39955af0e7857c4fc948354e2994c2cbc15bfcc0cd7ca464e2abc3. 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/SEUM72000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e81e1fb765bb9f3dcecd67aaed1ead2e43d683f41e4993e655a2ce7a8086ab. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SEUM72000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8efcd6ea0f8ffefee7780440877a70f243e8655b36e5aa3a17c4696fcae358. 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/SEUM72000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fb87e1cc60bbbb86bcbbe11ff9bdb168701263a71c259d3ca3e2ffdee1114. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SEUM72000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe7b6c932fd752603ea81c9465139b22a10c7a54d8a734e907a65056b8b5aa. 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/SEUM72000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3144f64dc9e599258e09cfaf6cf09d1afd519210184e09dddff15205edd2. 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/SEBGA2000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3144f64dc9e599258e09cfaf6cf09d1afd519210184e09dddff15205edd2. 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/SEBGA2000232.