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 0xa4429c467c1ea30ca6918af21b4a4118bfe3b56857a41ecb17f52eadb17bb914. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52b7c34c-df88-4812-a93d-5e8bdc362c30.json and https://artists.proofprofile.net/proofs/artist/52b7c34c-df88-4812-a93d-5e8bdc362c30.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 0xbfeac35a496733e0bef63d7a0e7984b286be1f32f351f3ad49c14a0ea9877137. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCACO1678722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fa7a08de166bced3dd755b802fdc5c829d94e7e12a4f3239d6da75d2eac77c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACO1678751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b43e08b67fbd17d18e57cf05e4473ef296fea4a8c83a93fe86782a2a768148f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:55Z), 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/TCAEO1938960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6062f97b65adf6ad21fffc8b5b35c43763d3537e25ff8406feec100ee508abaa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAEO1938974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4021d71032cc91584c0fe1130c03bdfeea53086aa317b994107094a66b4b75. 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/TCAEO1938978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89364900058530d85adc740d56358400ee54791c1bb5abf067efac3ac247174d. 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/TCAEO1938981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc8e70ce021fccac09acbc7e5b3f885d1a40a4312fdac08b17e5344c9fd539e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEO1938998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85f2c20dec6e6d13ef5c2a72c801c6c36880f02dfdeef19820c9e81a77c4d0a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:53Z), 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/TCAEO1939009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8beaf9730d29b4b414bc58a0bb21a4b955f0db0bc1575ea591dab96c52f3c2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAFQ2110109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94600e112692f99252b4e4f55da9448c7220a6e6f113f7f9b55ffd74c09decfa. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJB2440104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3222d7b525af32aa104df28af7452fde8bbc3fc3fb0fc6d60cb1e425799c3e8c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJM2544263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162d7893572e6ff478f31e15fd1b8027cdae36cc98195e6b22124d88060f6ed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:24Z), 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/TCAJM2544644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367fe3300a2e2fe489a2030226e965ea7f11e1ac7351f0d34607d313a61d5ea8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:50Z), 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/TCAJL2534416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268b70cb8a9d5ccfbe64a9f67f1ea4968d08a222496cc220c776433f2af3301. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAJM2544769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e4b1be8f18da60ca76f634f9d26e7cfc96a952e6883eb4e022d07e8220e5a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:20Z), 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/TCAJN2545014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7264fefa164065573239981eb5b26b59d4daf1fa9729d08f204965dd3530d8d6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAJM2545065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5552adcb9f5008e5b79fa80a907dd2734f01a9d255666aaa988acf7a678588e2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJM2545094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94600e112692f99252b4e4f55da9448c7220a6e6f113f7f9b55ffd74c09decfa. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAJB2440104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9786168a67775e7c247e5a4440d24696d638766f09379446886921cf980abcaf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJM2545392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94facf5c25d6f517ebdefa8c0c127ca7582d90cbf8c765dd83c00bd0899fa622. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJM2545629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0306c3e6949fbdf79413cd175e8e7a9504ec6194179e611498b619097b52a6e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJN2545763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd97077aa425edbf3132e97657dbfa2dfd66a9415b7b50a9cf6af6cef4640e29. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJM2545787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873ae92e2e6f9e34f713ee8bc326512374194ad69801fb29ec4d5a00291cef93. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAJM2545837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02b75f0c865b058295663e50e4cea9bdb8fdc5a21b3af6dce9c2d404ea1fa4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:54Z), 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/TCAJM2546032.