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 0x27653c9502a4cc0be2aa6b01a26c3cca73a7eac7217c9430e9a1cef44342a3b0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4efdd453-699f-4c8d-9726-35109645e1d9.json and https://artists.proofprofile.net/proofs/artist/4efdd453-699f-4c8d-9726-35109645e1d9.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 0xdae0b6cdbc77a6931bace56d8f0ae7ca0875fa0ac24eb84740f822dd80d16074. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYSW10890189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873edf19ba2adb283b1f7a19c83bfd6045366e53d5aba045e286b599abf3171b. 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/MYSW10890187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0d1a21c521c26565f5e307c82976ef3a954822ecc686b558f099ec176a997d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYSW10890383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c29a3fc310f020cad330956ed6909b0be3143a151bb0b8f6290dcb54bd2b229. 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/MYSW10890104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c07398eb4deac1c01ef51bd6f5da5fc2f3a858f9586ad943171313a6b1feff. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYSW10890105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47ec92007d345db398c45e17523eef59ba48e8220736b827f44229720a9fb1f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/MYSW10890384.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32410d66d8957589f926f4e4f412c758001042c783d8f01c4b142e6da28f9275. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MYSW10890102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a98e8471e6e6ec6bc0137dabb13295f0fb9883af8c27840b72437fd118a0d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/MYSW10890180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee875dbe5a9b33ec6e278e1088454572e5177f2db6cd74c196607ce371a972a. 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/MYSW10890182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8db92b46116df277dbaf08ba1ac58b3bc4132741be8967a1d97673bbc9ca15. 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/MYSW10890185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873edf19ba2adb283b1f7a19c83bfd6045366e53d5aba045e286b599abf3171b. 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/MYSW10890187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0b6cdbc77a6931bace56d8f0ae7ca0875fa0ac24eb84740f822dd80d16074. 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/MYSW10890189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18e25164f289d6b178a7d9069d8dfa071e967c83abe4589d56702b18b340fe. 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/MYSW10890190.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6ced2ef733008a98d463ad839292d7709aa43561ecc36c2a8a033aecdbc55. 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/MYSW10891916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac46fd5c08a69829a4c660bf94d6686574a20c02ab720bb8935bcc7fc3834e0c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/MYSW10890183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26eb7037522dfa8f9543ea227e0f7d1589864ab58312c5280b5d131a60f2ce9. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/MYSW10890184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe39164e6d0bd3da940f6d02a7c06cce1cb861dbba277ee99dd340645627f90. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/MYSW10890188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0b6cdbc77a6931bace56d8f0ae7ca0875fa0ac24eb84740f822dd80d16074. 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/MYSW10890189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86f3b53ddc6f20e54a3c123175ae3bd26f2920647f6eaf5da5ea66b847044fc. 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/MYSW10895483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f20301068bb1ab51ec4197e0a10b6e6a5f03775cead97cc5d0536fa64da134. 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/MYSW10891661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528221f19af18610829368a9f6a6458b748c1fc68dbb75e55044e49da3c9104f. 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/MYSW10890215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec588747026975ce36d8ac39ff99cabe8df75d8d94da93d4386fa980d8bf0dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYSW10891498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7741481be0794cdc2473de3c65be5db1812259f918ba08ebf600a93997195fd. 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/MYSW10890447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f87534a3e922e40b3cf8ae65cd1bca5adc1c3f4c4702d425bbc93381c173622. 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/MYSW10891154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba32662c6e56a2ec8fe5b15d93f72843d6eb0be6fe1ed9f3fda0f73d773b86. 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/MYSW10890258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf45a3ed8a55aa3a644a06a7cdaf5ab4dad14114b4296b5cca5b411c80dd69. 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/MYSW10890250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc978057ab3d6ad503c3b5c7e1799e7835bb2f75cef856e35d5195b3aee511. 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/MYSW10890204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d33d06a5ce9257f3a7a8cab8a064a47fca6cb5e0059b1884c9cde09514638. 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/MYSW10892827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60711029d2f84d959d83a85646e3f420721e31f444646b15e792102d60aa27d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MYSW10892826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d04f5893e41c5b498b8d8771b06ff40ac84e1e594cb5083435fccda44b1ec9. 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/MYSW10891349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253f1a20daa12430e0f90bed314398c760d559e977f318cf3ee04e9c9117e8e. 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/MYSW10891356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14178f326698b8b0ec9e55b1b57d3ac892bc11d771a868963184b56fa596505. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYSW10892849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1377b2e7095e50ca2697f60759594dabe72f8caf76433f97604e4442fa56e1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYSW10892850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d2516a26696286bbe01435c87ad30b2ba6384de7d2ce25ea8f3e1ee3de6a1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/MYSW10892841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43986d63af3c4134400d990a96a3aca95e250992ecd12138727d9e508f01c777. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/MYSW10892851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1821b15dc4998263e492f710b47ed56cdf40758963c24138ff2d6f1ed5781b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MYSW10892852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5441ec172a846e8c4fe824e96981525143280fbfe2f9e7e4200d92902c745. 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/MYSW10891133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ad4567ba8ab1678d1daa4d31a990cc5e6e0a21b1dc325f9e310db5e18f3fc9. 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/MYSW10891139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627dad7e9f9e4c6b57209b55ce5aa1aa0215e951576a1c969ccdd958c35cbc6. 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/MYSW10890109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6d8015b71b2e954ca1f7f5ffbcaf29a481be30821d4a8e7f127a3827eb3158. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYSW10890143.