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 0x7c8af99c11e0a51fabaab288860ec94150bb9ade8acc36e79c71dd88216b1bac. 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/f264f835-2b77-458f-af42-8304f23fbda1.json and https://artists.proofprofile.net/proofs/artist/f264f835-2b77-458f-af42-8304f23fbda1.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 0x81e2c34983827933a22b75befb7a50af5d9d4449fdcdb283c87c56cb042a31ba. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:50Z), 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/BGA472406392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7bfe009e80cd2589a521e5c5dab0fc58d45c98fcd1e33e5aaa02f24a9f9c5c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:18Z), 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/BGA472406393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091050e318fe4cc9c54d69cdad9c26fffe26ef16a10db7b20e03e9e2c241db2a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BGA472406395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5e68d351543e38e0730153f9af6fe9f731faa1fc109794a1f211e934ee2e02. 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/BGA472406396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f46ac5fc3b231c02d4918b75f0f87918fc918e9e9c4597deb33e4e6d4a1e316. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BGA472406397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b6da79811c1262d9ea8cbeaf85d60cc02ba8c309d8ee01cf86cc355d9d3e4b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:11Z), 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/BGA472406399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f392dedc4a57f73db9d0a1c4b054093d119821f15d40fc9879abde0f9173bc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:28Z), 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/BGA472406400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcaab98b3fd005140a170b06231b86ae0bddc8e613406b09786624c486acc9d. 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/BGA472406402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb5999b8192d15d1b0b2dbc8135c7d285a3e1a31f78fe051df9099f7710091. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BGA472406404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263df7f55008af6b7c1bceb52a8295dde8cf894c99427a412fb90165d19e08f2. 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/BGA472406405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dc27e8e84f006da2cfa0bdff00881601a54e57e74b05a2d86bb892ca378bf3. 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/BGA472406408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99215005dcf8f5732ea01fd2ae4d83006d32202b655bf791cb02b32681403b1d. 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/BGA472406410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636070c328682d2c7aeed8947e0fbeb02456050ae612ffebace39fa2f5581709. 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/BGA472406413.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9e0a56f2646848b1a6d92fa3af95e8bac55e2eb7d0f9eb953cba724587c351. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/BGA472406176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7751458bfe11176472c28e1e4fdf8b64471a17820986586e533ecb2633df3. 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/BGA472406177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58413861d6cb55e2cbe9981c941e6c4a1331835cccfefb93d99a899eeb39224d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:24Z), 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/BGA472406178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2f6e1cbec6acc972235844e02cf9afe98e567eaff294907f86a613149c8145. 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/BGA472406181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20979d92e94e1713825d44b8f12ce2075ddad8e612d0ac34e0cfb9a083bd014e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA472406182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24236f0cc4181cf76e4c239eee9d2761ee47802b87194c6543b710565a2448d. 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/BGA472406185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a67910049832711f355091d6e2c0d999c3c4ff856d6af4e767c2225d0ee14f7. 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/BGA472405425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60347a8315e45ae2a6621eba1470c7006fe145cb77a88ebd5552bc0aa0dfa285. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BGA472405427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd737f566cc9f6271b34acf57902f4d16585f358822d5f6df24a5e626f63d54. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:54Z), 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/BGA472405435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b705c3352f13c3a141f1cd853ca1d492b3fcefadc35c6aceeb8bee761afd5. 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/BGA472405436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe415a75fe42c78691adb288f2a9adf024944320c3e4d7071439205a921637bd1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BGA472405438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83596030cfc781f811702b9859b8529c2adb3f29c97d5837cc153a0bc70af1c5. 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/BGA472405439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7bebdabc550579bf0d9152babb80b80b56fe33d0ad49c1f79a7906971103a2. 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/DEUE22563466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6e09c69416f2da3b49b5a28d4c4a6916557996d527456b8439b8be6be5cae. 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/DEUE22563468.