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 0x85391249d0e1b13411836be3bcedfbfdcc585f0541c805a06515bafc376d61fd. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11b434b2-c13c-4270-b76d-d7edd2a1aa8d.json and https://artists.proofprofile.net/proofs/artist/11b434b2-c13c-4270-b76d-d7edd2a1aa8d.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 0xd36af8a275f7f48a54f83bac5129fd169e19a12c433eae5050ab662082e30987. 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/ARR6V2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6d872d39d0e5b2ab6248b6e4669bf9927f94de1ba44747a507f9c77a0b454b. 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/ARR6V2400157.
Una aventura desolada en el sendero cósmico (o simplemente Billy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b473adef30eb7c5b4610f6ebd7ec389204271c46139d3c2e75a467523ac27b. 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/ARR6V2400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911bb0a073c949397a0594e25d363f49b64947040d1dd113e8fec2ae5fdd02e5. 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/ARR6V2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc42d241f528e410f4d0db193169820d54cce060e24dcf67ea8deafa2d4047b. 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/ARR6V2200339.
S.N.E.S. (Singles No Editados en Sincro), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6bca6785919a85ccd206c6cdd883a9c3a57534491634f02c07562e2a19f022. 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/AR6B51900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cddfc2ca89eb65a7717aa9a5ef82bc61efacdcfb8bc7b9aaefc4668ebcc87d1. 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/AR6B51800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8318dc45465a261b4f34581c3fee91e12de418df74b6bb350791cb46f6465042. 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/AR6B51900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03770e79461868c0c862ef8c9da7e0b525e141417883dd148c342fa2a072381. 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/AR6B51800264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ff05854cacbf823087475b18126be4843163f3eb02248a979477598bb42f6. 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/AR6B51900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5622fd8c00ac8111a809d90d0beddd1b7b066d24b163ac3bd08ba2fea71112. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:25:35Z), 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/AR6B51900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb31d93b2b9280d8175260a26a83638f1841e3d5ef459fe37fbf2c87456aac. 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/ARRHM1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59f7dff591fa8b3323b5fe67d77f5ff9b7d28f9d334d3adfdd07568a1434bfc. 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/ARRHM1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2829fda559a7c12ad0e427bcb8b8c30b5e453c04e75a32348d590d24c9d700a7. 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/ARRHM1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cddfc2ca89eb65a7717aa9a5ef82bc61efacdcfb8bc7b9aaefc4668ebcc87d1. 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/AR6B51800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020945bf614ed543ba8180854dc7512be2b365985a667c43ace91cf021e3e8d. 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/ARE1S1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef901f1e0cc0e9732f5bc5f0bcdd6495265f25539267da74127abf2922b8ff1. 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/ARE1S1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa714237896d06b1c2bf2af0b8a8742ac62ab965037d99192187813fd011a900f. 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/ARE1S1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb6cdaa3d37ff969bd58276e20e4a6552080cd1c9151c09212aecea2ab4021f. 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/ARE1S1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde37065552057c1cf0d957fc6ae77e60ee178eba584c63b53bfb2c1c59aa7b4c. 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/ARE1S1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064bbeb226809b02f72e0f465d2de045443aef9705face1d7909338d3fd81cee. 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/ARR6V2200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f93627dfdc828d3311c80d0e01d02fcb9c7ded686e243fb764741d85c1d0cb6. 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/QMDA61840542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004db12b7bb158d67e51f16ab18f6bfed649762311ad8456e9130f979f33d18. 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/QMDA61840543.
Lo Nuevo, Lo Viejo, Lo Azul y Lo Prestado