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 0x77a6e28aa8ad4982cf906004ce7fbf6d124e1d362dca94b9bb61df8e38cdcf8e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/980e3300-a8c5-423a-835b-69eeb530dca4.json and https://artists.proofprofile.net/proofs/artist/980e3300-a8c5-423a-835b-69eeb530dca4.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 0x6266459ef669931bd6c6135fe0e9703ea0a068d278b6ddff2ada051e0cbe5c93. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:19Z), 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/RUUM72101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e3cd7469ce03da8c2b2e752f58b46dc93c2c2f2d2ef7133e573f801cce64b0. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/RUUM72200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd58f375e271938b8e5cfa572930818a365b2061065fd03e5213393f9917b40f. 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/RUUM72200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54af16e9f8f810795ec56d849843304e745dc87136c933423905e5dbcfcfb8d8. 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/RUUM72200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10668f96630314e264b52bdfc15f4de38ec8453e0d3cbe6ae79f267a1e2d8381. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUUM72200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa653010cd7a55050d0994ab99cb01a0ef8fe235e6950690e8991b5721cbf3e0. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/RUUM72200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f21f2ef863a937d47cfe4d30f03c671627757c3b1405fe7a4d74b53f1f3f2. 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/RUUM72200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12334c3394a6ad92227889245883d3b6a506707f7bb500b8e2af4a33b0cb6d6b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/RUUM72200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a9009a3ac5e2c51b5204620ee8407a7976d7896bc0ee575516b8421d598050. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/RUUM72200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50857aff69c031677d4c325aa481fdf9f4c646ea9c1002a8135862dbf14585ca. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/RUA1D2292594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072f192bc7ec148ec64c9216992d70bce53a59038bceb5ef5443286071d4da7c. 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/RUAGT2204679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca859d3654d8cde3d63f8c32552c3294ddc859e78a838e36892d45ed8407c2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:03Z), 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/RUAGT2212855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176dd7f43ba44158f203cd05049431a6acf7e15a35c6782f67704344268ad5da. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RUAGT2212856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dbf46e4c987eee8ea7d5e8d06b3205916f5617173a03f66b74570701b9ddf6. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/RUAGT2212857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34c372b067bdf3df62ed6bab462e4c004481dcdd11cfea87af869906f0a6a1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUAGT2212858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf37e5812203bfe1dd27315d40916653c10b4fe2cd6f753bc4503a29ae60f95. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:17Z), 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/RUA1D2402040.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c7d794cbe2297ffb4e393f0f439d4531ca5cb3acc85ed730f21a705ef4aaec. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:46:47Z), 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/RUAGW2501983.