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 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 0x9e918f5672ef95294479c203623c908343baeedc4240982d663b75fc269187e2. 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/0ac863db-71a2-4db3-9309-c40d1adeb3c1.json and https://artists.proofprofile.net/proofs/artist/0ac863db-71a2-4db3-9309-c40d1adeb3c1.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 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 0xfce9f520217028076b669f7081c5755cc49f7b64ed211566088068173d0af869. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5070000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372b29560a5f45120917d56e046b53554bc7639f04d0da60bd3d84a2aa9fe49a. 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/USA370948543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd521e271e2a97d2d99cc6e8730480e35bf12a2493f201b61a051418925d9a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USA370948547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca94049583eb7b2f25afe85ef9c00e2b417e90d2ceeee5c5c2cf47c0d6f46a2. 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/ES5020400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac44729c1a92bd89bb4115f6d6a134c0be3ef64746babd2aaa2f062ed09c81e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES5020400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723c8f294e10bd240c9b3518a68d9fe4b81d21ca8c8946ea7db4e19f7055bf4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES5020400427.
Universo Totémico (Reedición Especial 2009)
Universo Totémico (Universo Abierto) [Reedición Especial 2009]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c46c33358e077935ea359bfcc814adef818eb9aff258ff39024f7c8eccaad. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES50I1100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed32b18adf8899bf8b8369d18d6634382a17079cc2229905bc6a75e9ea7ad8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES50I1100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3dbced5bda2f1348b7b23094b63739f3cc32fcffb8a2945a680e1495c6eccc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES50I1100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe38d9cb1b1fa08c243df8971940ccdb5cb2e0aeda0f98a1860e37e466e4795b. 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/ES8241426201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3095f2d4ce31ec6e37c2b205cae2ca7b9535e318f794e2836976c45d48de88fa. 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/ES8241426203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba4f161e99639fcc070a4fe15ce554ef07f33974d818bd75d62ab74c1f9cdcb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES8241426204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd695cb26ca5fea93cd8252e7f33f980dd82f5a24bdebfd72b44e2d3edc7d638. 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/ES8241426206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3df0180bc8861d7336900a914d0b900fb24f46ea0788c03d165d250886c0fd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES8241426207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b470211bf6301144218d53a34a2e30933b18406079815276116360d58d9170e. 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/ES8241426208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2561e28012b9e01fae08426623fd067a4b25393ebbd635c93a1da2f025f933cf. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ES8241426210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182708395919e38c82d016262cff6f68b309c30cb0ed06c5b1583b639d8d9e70. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES71G1872343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf52b74f993f072be597993f1e08a802aafbcddea38bd863712766269f7fac78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES71G1872344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9557e3863f9e3e9fea949104cf6de40536d97b4ca8051e04e36ea31e73a5b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES31E2301626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122b7ba73775619659549a2425420c05136d44ea5c0c02819790b31324fb6bf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES31E2502927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0097e71cebb1f0d0282eb9453c59ba7cb600eb2a35b1e31805d8725346f58. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES31E2515558.