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 0xc28d3ecf968b1a3d01be6c00a86fbabc1e7d7d4e56b2dfa349dc3f1cc7eab7c3. 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/dce95c05-2e0d-40aa-b8ea-460896fd9f56.json and https://artists.proofprofile.net/proofs/artist/dce95c05-2e0d-40aa-b8ea-460896fd9f56.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 0x1e31340697866939e7d39b816ae9acb360b6dfc7e0129d985551421b83ddd7e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLH3Q2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca7a64c9b10b3af78c4e31c22421e1d758c979cc649e6854431765f4ad1d22e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLC202200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4679b58389a2286342f6408daaaf53b273709de6e6495c65783f2bcbe95387. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEB682200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9f40f770830e696b0fa2b5372a8b0846c922717fd6ede80ef89ed6879d4f3a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLH2L2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8650135ea0cc568f16c2474dee21de9ed7b03c3f5f9a15305051ad12cdd5ded. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLH3Q2100991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3168b80b13121d4e2f7c598aa5c507f30e0f80b719b8c8aff657da16199f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEB682100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde47cafc64374ef552faceee24aae0279b222fd730ae7a202e52ee6649f94f86. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLS762100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3620b698eb311ad9f23cb1a55432eb9cf23948692f27f00cc411ed5b91d1ab. 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/BEB682100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87f67c6a9f5697e87c48b43a260253f9b053caf37dc70178d513e243808331a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEB682100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64074f1ac317919a448aefbb84f5e5e3393027038fd07f98aff69a55214cbf9a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6H2072923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c348aed5ca67d02c10d5ec416d7382eb33a9ab285a3e94d6f90199dd50b94e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6J2004746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8fd331bb822ae803303357ac1e3e1f4e26fa440e5c363d9d80df60877d13ce. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BEB682000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232a0296a1a042347d865ed3ca639de6d437c7e1b22e7259620e05fe5d95443c. 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/BEB681800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080a195ef3e389cd1253bfe8d8e12d36d107a7c69cde1dceb59ecf46ff7723c8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEB681800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b3dc56fca081cbdbf31fec9c5ccaeb98cab013c3ae5fa625b756336459c42. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEB681600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4040cd6f0783d89cfa74f053371ebd42b77dd7063ad05ac86d5035cf21008c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BEB681600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2525a86b5ea7a829fc346fed284c477e53e11d001a5ae35b347cb54415cca3fd. 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/NLE9X1400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a29aa0eca6b017ca4f81ab6a7dcbf624183b9019dff0fd21f24a1944d1799b7. 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/BEB681500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a29aa0eca6b017ca4f81ab6a7dcbf624183b9019dff0fd21f24a1944d1799b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEB681500067.