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 0x181f2de3e8106a99962a622527b2a8c701e1d48f9fe375b581495bc390a71def. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4ad9319-3c85-447f-b0e8-4c40789888b0.json and https://artists.proofprofile.net/proofs/artist/a4ad9319-3c85-447f-b0e8-4c40789888b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Javier Girotto - Luciano Biondini & Paolo Silvestri Ensemble
The Enja Heritage Collection: Terra Madre
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 0x776b461ea24a175c4c121c2dc522aa682869b8f6b00c22dee92aec31ea527cb8. 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/ITD000800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a08348fa931dda231496eff348460cd921c8d1ce17a5de6059a71b01e40ad8. 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/ITD000800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1dbf30b5c3ebc9c1a5c16139a20c5cbac771f9c6da16432a71bd1dd28fd958. 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/ITD000800309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184beb343e171a0c1381ffc421e521e29154cb7851121c8e00fca2368b81a063. 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/ITD000800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a4b5586bff6199e8137ea3052a26cbcf75148a5d3c3cd6b13215ed513f380. 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/ITD000800308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e101d9bd203c782f3a13fcac32b1aa681283af696d2b70588848131ba2aac3f. 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/ITD000800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af90bdaa9f63d81d39bbc8c9dbbed1601267ad882514462be8489e95eaa0b9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITD000800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5522ecb67169e0960a5aefc1c29562dd646b45e4fbcbee1bb2f8183b7590fe7e. 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/ITD000800311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5debe2440f42da13ff5ac9c70646da7f4f336a40ce401992e54e7cc5edcda725. 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/ITD000800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a36c535f494cca5f82a1952021f062716c23b321d812432681d09deb5a73848. 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/ITD000800300.
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 0xd331079857fb5e97451a512c70a192bd96062c6e37eba4374debab24a1e6e186. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITD000800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22976d22b607b6dd1316d64283af2167f812a59d92489518b74ceaab8ad7651. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITD000800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f9500e3343be183a12ea4a2fa155b531f625c30e0b65a18f8798c7d828418. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ITD000800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c7b897d597649a6dbc5e40e57b7841f75ef4b9500ea9964fd47d617083380. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITD000800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f158d07f6be133003e63710d8cd0af1494e7c3aae41d18e50e9fbdeac0714be. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ITD000800312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80af5140f9791c66a4bfe1df5a46bb03e5e1b0b4d08052b1046ae81d5f63ec1. 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/ITZU02151001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45207ef33fff4501a354cfab9072e2d991abdd57db1bbaea0ab291acfd764d31. 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/ITZU02151003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042b42378286e7617e82c927d9755c0a13bff1842437510c9aabe1a71715ef7e. 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/ITZU02151005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5119447fe0661171e7991bbd488075f1fc7b9594bf9c3c58e0d1ea51f9e87b6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITZU02151002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449ccf16f635af84333defcf360d8c4515310fecf495aa9224459742448589f. 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/ITK601500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa518f6ea96c4b7f7351242e5ecd4ee4c6e1d518fe81a9f4cccf9215920a4a725. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITK601500357.
Javier Girotto Collection: 20 Selected Tracks
Colibrì (Pensiero musicale dai profumi e ritmi sudamericani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172a6b1f535bd222f7047f6352ebd897634a70c6a89cfb155efada799e610e41. 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/ITPDM2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ead58fa24b6075aed81db8c2518e41ef9ebffefb47914dc3e2030bfe4379c7. 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/ITPDM2500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63f3dfe92318048c6dc49b443c00e8cfd18d7922834054e0b2e34172f27085c. 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/ITPDM2500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb19dedf6c33bff1b7a67744507fb6894d2accde0db3324f540bd0af88ac03. 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/ITPDM2500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971cda3b3c04b55c4fef2705f9dd4c3def877e7ec6655d2a62dab75749246f62. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:35:24Z), 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/ITPDM2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d3701858f3b28d5b20ecf75bd9d6afa0c20e3eb2b212f60805e1ef8d2869b. 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/ITPDM2500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648d743f23bf62fb9d7568955004f5890be2fad88d5783399fefff22f60d9b7a. 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/ITPDM2500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de0b11152314c4c7d74997410b963235f7bda8007563c9e005fc15bb5e875d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ITPDM2500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb90aa4905194d6bc9586df0a32ef3e4c5e1d52c5b06486c05167d8961f8ee. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ITPDM2500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b37b8f11d27ab2f9a49066cdf6d6a18dffe273997691a0fc0b1419adc0b530. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITPDM2500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2275e8afdec996aeff49b35d1d6e1834c77e0a62e98c9488af5a839498ae2655. 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/ITKCT0700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5a38f6b89cea29fa4c09094eb940986580225fe2daee87ec647612641310a. 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/ITKCT0700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2913457010cca90ae217dec604cfeeb304321f19fcffda694bb7a6f3fc038971. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITD741308105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304eb3aa5ac228d73ba3894612937c66bbd45b169d4489846cd6b9da2a716a7f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITZ681000101.