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 0x441007f4e6761b62c9eeab1e3bd4729c6dc5d07d68672f885bf35e3580392845. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a890244-07c8-442b-9959-49d5e98db337.json and https://artists.proofprofile.net/proofs/artist/1a890244-07c8-442b-9959-49d5e98db337.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 0xad65ba62beb8f4ac42d63f7980919508f849ba9834e94f4704bc70221f1370eb. 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/HRAA41800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0f72b91c5341e4605823d481751eae41a66066a48a82e79e189a38a6387fef. 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/HRA261780030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e2bbe6dbc89fe6b2e58466141ece4075b30e01564e1a366b73dd05a5a1adc3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HRA261481001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed76fa04e449b3d85642a468ab992aaf228cdefeb745a09477da8c63b258d48. 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/HRA041477950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ac5eaadf22a24d493c2ae3060562449865ac94bd16c575de5feb6a5c75b9f. 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/HRA261321809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9830db1ebc9a1524c5c37b2a7ece32e23472abf9edb1c7326b9d5ca62e853b1. 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/HRA261016202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35441bd895a73286528d55c1a0a48f1ebc3cf0658446faefee6a69666374459. 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/HRA261016203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09e92185fbe51eb26e1b917eff6e0b583c14b99938dc500988de61496174a3f. 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/HRA261016204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d9c15b9d80808eefd7ce26f91763243c11bc8dd3a4bb586cd3e8fcd469325e. 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/HRA261016206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99285bb833f0240fd4cb98854b76c3f0af662edb38143c73882ca4aa3631f54. 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/HRA261016207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd25db7dbd9af9f370c4043283e11237d806a502033d53e91495bc099eab7b. 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/HRA261016208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4994a9c7ec3656ed2f23fa3e1a108eec80e16831a05e325bf746ecd0caaf171. 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/HRA261016211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8de2ae6599f7e24c490339348ae3b94fd768df82ca627cd90ebb443c70f7bd. 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/HRA262400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2594cb18455be9436635f7fd975163ebddd74b198648f2fc7436397afc1619. 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/HRA262180016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43f9ff8a461ede8fae55141807d27792be7f0d7daef43ab5913fac7ca97f69. 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/HRA262180001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a23241aae88f2eadd680515048f40b2e4eb0ac9516cec29e77cd196859beba. 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/HRA262080019.
61. Festival Zabavne Glazbe - Splitski Festival 2021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5516d1e345ece6520e24a9672e03a548ff219c675e4e857e18a0a135de3fd45. 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/HRA262080023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcd22d589f9e0dc313757a05de60b04cda96aee7603444b07da1c14c100ebff. 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/HRA262080001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa577781687b53153a11a155cd0bbc969a38bd58dbed4773228f6e23d5e5d5e1b. 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/HRA262080002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97142dbb700b013839e28dd0752c767c1dd93af01ba18b9bbb947e6c51d8e75. 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/HRA261727605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654678bdd91e9ab847e949d5119fd620d8844ef5132c5563162e9f841c8ddfa4. 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/HRA261727607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df9d49465826a0d62e3ae23f2fefe356fdadee7c3e00cc296066d8e9bd52285. 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/HRA261727610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c006485d8df492f1286b5a1b739732c406a001933802ee6b858162fb9e1962c. 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/HRA261727612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db6da5fa0732047d7e53bb3f41b3f0b48f328690d1f55193e39a0265bee17bd. 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/HRA261321801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a36a4ffd3c9bad6c5bccf566353e329366ebeffa3d9b34666c165fd3117b5c4. 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/HRA261321807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ac5eaadf22a24d493c2ae3060562449865ac94bd16c575de5feb6a5c75b9f. 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/HRA261321809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd292822332614cf8ef507ca366030e8aac76b72d42404a7041647f76ef3a5. 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/HRA260913804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10052747de8027caad274e391ba03a5e45169b8fd0e0847876f3694db67773. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HRA260913816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dde55da11328bfb01300c436d66aa1fe60f5b1d6388411dd80bd4a4e87247d6. 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/HRA262180023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91fb6a459abdb7c4402c942ba992e81c7f82dded5a323ecb5b3c405c26baf45. 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/HRA262080037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8fda845ef5d45f56358de265720a3e5a3c89a40654d05066d26f00e4800225. 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/HRA262300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a14224adb6f9d98a8a441872b62adbebc0b019e5a18d8832d763768dc79ad5. 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/HRA261930102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c521736bdfef432db79dcae02ae5b792ec69840f90cc082310bf9b72cc0ff0d. 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/HRA049329457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1a3d4124485de2e62624e5875a3d977226c4bb822fb3119a436da347fc3b1b. 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/HRA049430944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7648407b70fa581f3fea3bc61fcbf2419427a79807150850383fab10389af33. 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/HRA049333676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa4d852e015baea78840031bcb7da1badef72918e47b00e4e9fabd005baa9fc. 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/HRA049430943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365bef03cf79d92677be28d796b64a80a1505229863fb7e0846dedc3a2a6a81b. 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/HRA049633172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9e70a6a5a47d468db088efe8b46f57607a21186e3c4cb3bc3e766f999f366. 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/HRA040641407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c3fe7f129caae0cf3c298b31c489d8fccdd03ce16d5990c53a00073ca56213. 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/HRA042094808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa400f5bd2d1260e665717655cc398f09d552ff806280251f4b13a5e77ddc08d. 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/HRA262080007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63337659833903b5fee1049c7b53893c5c32f0ec47382f32d64972b53f6aaec6. 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/HRA261580801.