270 px|thumb| Radium is a chemical element; it has symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is sil
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 0x56c27c0716c159daa97d1860740e60910b3505dc11bc9e2af7dd3e11b2b625b1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54e603bc-91dd-46dd-8f7f-0b20cf632d81.json and https://artists.proofprofile.net/proofs/artist/54e603bc-91dd-46dd-8f7f-0b20cf632d81.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 0x69a987ae639bb8b6ecbff47bcc52051ddf6307daebf0ff06469ac420bc52cbe4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6V80104834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13dca10bb5c01dd20a16770363e88037f0562daad610894c8892f833246820e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR3R20125012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648258246f35efc714fc175f525cd42dcabbf746927f89ba11ff7821a386b645. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:10:08Z), 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/FR3R20325006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d53d5e82bce2648edb290a941ff26febc1d244baea0469354612b0601b0f69. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FR3R20925105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92218f3b1fbfdc842c1ef85aebcf6af7bf3e4c7022715192a5faf27b00520fb7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR3R20925110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc3ad43f17080a1aad56484a115c7e0b09e66e4777e0cce1902314342e18beb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR3R21325019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f01981ae0a57a42a716a94205dec91feb4687dfa908a0c619a4030ee6b9594e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR3R21325023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59503487424cc68aef5dac0d5d5a5bb247434a2f2b17769242d91b1b2771c886. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12015007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd795b2583160229e668f1e0c05c8e34d74f7968d92a4996c2111928ea5d15904. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FXQ692000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb5b80ff476272ca22d7ac1bfd0896cc384783c20eceec84f2e3a82b8f33b2a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FXQ692000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89d3084a8e2227594070a3f6b628a85f5e2dec497f317d0658b69ab5066d86e. 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/FXQ692100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d837394fd3204f0667c628be8443f84ae317a88e1f1836965fda0b7c793c89. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FXQ692100375.
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 0x7fddec68e10d89bb7d8e7b1f4c5f8ffb9a2b5ce8541458ccbe9c8a21c726e963. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:45:37Z), 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/FXQ692300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f77becc87b056dacdfdb461af882e6488da2ab7bfcfc5a05857511ea102e12. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:53Z), 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/FXQ692300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe846c91c6c1c32aa588f8b5a55b2e545f90bbc43c55f4104fd94a8b6855cebef. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FXQ692300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbc32bc1272500b5a8b45bac2a14a299a40c5a3386c64e46e4f1eabd3c0c7e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:34:01Z), 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/FXQ692300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf027ab93bd936631fa1c7de1cdd57742d0ea26bffc40cf7bc52718fcdb7b513d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FXQ692400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f306adb8dbf580398c424f72cb0dcc99546fc7f3de3e6a4099b9200c33894. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FXQ692500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe846c91c6c1c32aa588f8b5a55b2e545f90bbc43c55f4104fd94a8b6855cebef. 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/FXQ692300280.
Syndicate 2023 - Ambassadors in Harder Styles (selected by Hysta, Juliëx, Deluzion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a76837e52711c243cc0c77d0a8332122444e740b96c0873dbd2206fcb0cdf5. 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/NLG422200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1479120e56cbee912637fc726ea5448e0b6bd778534808ceb78ea011289c0d0b. 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/NLCK42225385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f80e7c5c04e4af611fee1c40b7f05ca223a2da6a03aeb74fbf72f998db4560. 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/NLS241401985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f72424d36a435448e95cb68d45c141f47c4393d0fd50026a13696bb6d6481af. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ITD131800060.
Hardcore Italia - Latest Greatest Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff356f19654358d676b081eceb32e652239cb2f86a4a2907bce36e3184c7b92. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITD131900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ea31bae0c4ff8fc886664cdd68a9bae8243df02cd1b9280629f498b8aa3fc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR3R21325020.