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 0xe1c8abea1e53368265cf8242ece782424c06067fca8ebd461c19f1607017871b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13f140eb-c12e-433b-aef3-42a3a385f2de.json and https://artists.proofprofile.net/proofs/artist/13f140eb-c12e-433b-aef3-42a3a385f2de.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 0x3ac6420f0f97229733d0c48eb316e96ad62c8966c4785db7ce95eda0fcfd1732. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:11Z), 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/ES6110463401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098ee42bcd1557178d58bcb5cbe9d4e96265662127549ff5fc11ff764e9a77ee. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES6110463404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d4cd7ba8e46e57b07dedd00e66abbe7648d35ce878b481da198e3e4e8e8082. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES6110665801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ab780d55e14c8156a81df956972d26ad443a6dbf15ef89270f5cbedfaf5781. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:56Z), 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/ES6110665803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9439638faa466a7bd9efa02d2ce3061d74eeec1adc09416754cb62659d9b718. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:13Z), 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/ES6110665804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b048b5dbb68ab4dc0e4b97a828a9d569467a9a1072f2fdf10e6044a83c05c0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES6110800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9c1b2b5946e97ddad2960d8de382ad593aa354513cd1a83c3ebaaa3d6f4bb. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/ES6110900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13687c7f39af2d305d90c80260a88d2210aff4818065c5d674622397e5578505. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES6111000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92374991f090da23c76e2152b5867f4149a595477627a85482282ff6928e3614. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES6111342402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e39d5d0d5a450d88923d9760dbbf9e5eefd8646d6c8cbc112d4005268cb01a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:14Z), 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/ES71G2152393.
GORA BIZITZA (eta esploraziorako beste zenbait aurrebaldintza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f972a018f29a5c6069206d5b44cf2f1016731cee546da45bb0144a0181ea8e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES71G2508537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5a3a3035fc89400042cd44e43bbbaf0e21623d51c5536f420fafc20af07e1d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:17Z), 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/ES71G2508538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc429a3b52159da9042f977cf981e14d28a6bf70b434dcadc33ecedf40a34612. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/ES71G2508539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58046490bd3a07dd6436b1c512460e5d5c9e1c2af0424d6677a84212c7c4c923. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES71G2508542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d6ea050b30c96b51ac9ac73a2606e26a63f52bf3d7ac6265ba7cb5bcaa22d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES71G2508533.
Nekagarriegia da gorrotatzea (eta heroien kontrako saio holistiko bat doan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe84c44c0623be242d364d95e7867737c9f07427d998e0a0ee8d05cbff661d2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES71G2508540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe3c359e84fd17126639d8f54d08c9edbaf30b9d9b46e87ae401a54204b9b4f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2508541.
Minutu bat samurtasun hari bati heltzeko
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e785a9ad206b6447ffac6eaf084f91e70584d4771eb124be66c10de505eddd4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES71G2508536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cad39608785d04db675b1c1bf60a6018926aaef51a42c5fdbf2b378bc83427. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES71G2508535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea05b588455609082845bfc52777cf856acb17637d7f0f2825be20b7a98063. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G2508534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9284a52c1248e029b704eb197606068ffe4b4fd5e8d929b6e61c75ec3c436. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2508543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac80dee3f8f6a98370a46af4da63d68151ad3253d8259b3fc8e1bc7ce3f9e67. 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/ES5591500316.