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 0x375eddd7da29278310202c369c8eaf1c4120ed38f069e15ac09057c0ad5d02f9. 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/2bae3602-ee16-4337-b0e7-9b16b81b5ab6.json and https://artists.proofprofile.net/proofs/artist/2bae3602-ee16-4337-b0e7-9b16b81b5ab6.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 0xd9a70792b8731ddfee3801d2e3f79cc96c2be19b640a8265e5548155bc25d7f0. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZFZ52023336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fa5333eec70ac4ba8d845927f374109f31fc928a098b7f9998db7890594367. 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/QZHN62077320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10c88a63b472c303dbdf3b83f145b1d940fdd7370fccc7e5f6e1363642e0d47. 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/QZNWY2047616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a0af34d16eef9b027b5386e6838b7fd7cd6ffa0e512d8ee68814d92823ce6. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZFYY2106572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938909621367e3d0a847820c9ae0a4de839ccefc6655c64774b5fceb52a5034. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CAN112200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8820aa755c8fd77fbc9da9582e608b920432140fae2a3f285afab2f999fa219. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CAN112200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ecb2273ef37f76fe936c2438479f000b34ecde5704b27b3571ba786168079c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:03Z), 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/CAN112200752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdeb4a613cad5061d900c04fc09019adfb40e177db6c3f2c0bb1bddb636cfc7. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:05Z), 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/CAN112200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a23b25cc0ae94834603ea6042b83445703ec2080b7664b15c8452844134dc83. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAN112201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b1c74e5e002346ba172191cc7134daab6c13b118e0904d86f1e62f395f9baf. 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/CAN112201212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89c4e78d9140d525494c0a2018977a1dd638b2e57738cf784168d7f3b06ce4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAN112300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9236d44ce3f781c616939e7c3da7e40f20c741bd0437f6d25fc148dcee71c2d9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAN112301540.
Christmas Is the Time to Say “I Love You”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4aa636fed0b30eaae6940c7bf9304d730b3ac8e7de3c185df72fe9475915f4. 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/CAN112400924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d339807a631cda46b3bff5d59b8462e1b9130f350ca3dcb7e1044aaee16210. 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/CAN112400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672066909cf7c2a1a585f632a0e9982b6017524ee48291c4403ba2376de31394. 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/CAN112400772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8844cb4c1b425fdad1f648a6a1670b7abbd35d0c0bd5579ffcc9c58b9d33b59a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:28Z), 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/CAN112400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffd97acbc9b066dd5600e59f29350030f79e5ed30b2c926484b43bd0dfbc8af. 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/CAN112401515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0643774e63aa67f1500649acfe15f8523f15e70774fc680cfa0268c2f3338. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAN112401649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404d8f6f1d7c3d500def089d6feb29bd9db2cbf9488d14adb863f039d91e8eaf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:11:51Z), 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/CAN112401974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7f20503f503802331e9a7a63d3c1f64ca7fe0ef002749611df103ae652c9a2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CAN112402094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b9347aeedc57f60319d64e991998da760576e2b97589c58182cdd37af8835. 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/CAN112402095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d09c4d6bf1144c03ef7b0b712cba760938335bec932611d2e0dc4ea03a03b3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/AEA3A2021063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d636f5f879225d4bf8ac603f19f3d06516a39d30b21b6492d6b11a2881f9469. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AEA3A2017383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc2ccedf38e74212ff3ab0cf735f77fad75154f0d8bdcfc380cb1a05141d9a. 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/AEA3A2065366.