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 0x9b09a66021e410beea6991be168bfe651325ff011626ffcbe5e38a9c9aff79ce. 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/827cdc70-cf51-42be-890e-7875dc51d876.json and https://artists.proofprofile.net/proofs/artist/827cdc70-cf51-42be-890e-7875dc51d876.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 0xbe7dcebbb7a0b4a8a9f08bb44dedac59ba77b0047a1a55f309caa55f4d11f0fd. 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/ALA091800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829c4ce4db0cd82e25b311aad957bac36a992615fe2a394b7f0e19e27103fa5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ALA091800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4cd187414bc3b83ca7c1c3a6019f163b56245545b5cca2ebae69fc604be8b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ALA091900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a1d325e3c904a07bcde0e3a2c8d9b366a146e46d7d5f747ab68d534f676622. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:17:36Z), 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/ALA092000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472f3b0ab6501e9ab37abe5b83527a7c3fa57b7204bf1cfa94e2f930f548730c. 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/ALA092000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01dede1d568701efd41a40d06d181708414fa29e316a0885f9bf7ab7b1e1a15. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ALA092000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94435646320bd01d205d383f9d5c9c8ae86ed3682a6eca8bb64874c4bed1e5dc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:10Z), 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/AEA142008983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f8f55ebeb47e712aa2e2186f4811769e854dabf357aba2a89ff30a55815409. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA142008982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ae5cc76aa2d1c91a317e8980f8946b411117674fdab70cdd37d5d0d63e10c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/AEA142202192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf177d20aeb4859b4298d8f45891fa75b1328e58d164189e9ce7c3e49055a8c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX7852200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cd4dbdf1f97259d198b8fc265608e29270c4daaad64e8e858b18ca566e211a. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/GX7852200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b15859c8ee99d30034bb972c8e4691a5141002a88ab7a700493148be8689c98. 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/GX7852200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec3826492524f33bd048e6a252d043cc02019c3b34cc68661849861a9841c4. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/GX7852200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58488c9708e67a19c8c5bec3e2005f566bd34860279c650a2a0853b249da2fda. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX7852200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddbc55bd593c1e7df0573f286414f07edbc9411b5eb3b715f4dbe5a8b379d9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX7852200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d3e6697509f609c2211d52c5e5e948f2ddf5c9eef0e2a7bb83d670e70b713. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX7852200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5d51a2232b739bd56fb8dda4a4a471a4a1678a3bf52afa2d7a99175f322eb4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CH6542304620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b93e531e00cc5e0989bcb9c1c59f201a423ca5fc91938093e6338f0a25ee6b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:00:38Z), 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/CH6542345355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ec2a03857de913e48bd9b59255353ca6833ff5ee335505efef0401792fc6c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CH6542348189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd078120c3697964c67284679dfa0d5456203f888115e8111fb268c114d1c26b8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AEA142450003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27969683a318903969e9e05d93d573c27eaf52f9028d9b34a5ac7427ff6fe60. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AEA142450470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3175684bbfccef9916b495ac05bddf66de24b86e34e94da40bdca6a829b320. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:29Z), 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/AEA142451166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5abc14644161ef5aeb96c9c163d73b30cadf24c6b10f515795baaafa90ecf00. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA142451513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114779ad16249d34f6658f47999d50fc30c7333f27117f6f8d7849e7c2afaa07. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:10:03Z), 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/AEA142451514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96643d45e18df58a018c844da704d565f889320c39c099dbe47c8043e9093ac9. 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/AEA142550081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03441043c00465c2dc8ead767204df72abb458cf96167ab9f6c4cc86f851c2e4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:15Z), 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/AEA142550297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7254f879bf629744dbaa01042dcdf43ee847a6bf9c0f94f11233819c381b76fb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:37Z), 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/AEA142551718.