Merino sheep|thumb Full wool Merino sheep|thumb Merino sheep and red goats, Madrid, Spain|thumb The Merino is a breed or group of breeds of domestic sheep, characterised by very fine soft wool. It wa
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 0xefce5d2a3747f37dba1620ad127beb6454c1bd43e6edca2e6c4955602fb54462. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15026295-e1dd-4a2a-a22a-57fc5879259f.json and https://artists.proofprofile.net/proofs/artist/15026295-e1dd-4a2a-a22a-57fc5879259f.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 0x6114106de3c44783fdd2670691f74f0cfe1669b355ffa3e97a0030445e007751. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ES71G2030125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d8b76620fe857f3c187ba7687740a9ef5726f284685a200833d1cfdd81035a. 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/ES71G2030107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd83afb867b5c02aea3be040fc098a91d26966c002cec1a1db53a8535c3ad7d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2030108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7afecd178b4f4bb2310ece94c9338337ab5bb6ef0e14a57090976c26bfd6530. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES71G2030109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d0de78c7e2320433fb8926e8a9970d5506f0e09cac9477164db3e4179a052. 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/ES71G2030112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f364ace292bbfc68c76bdc45475261f1653408d3be632b3945f83a3ce792e24. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2030115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d119187894331f948d2063b58f760560fecd780bc44b28871055016b0ce9573. 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/ES71G2030114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05e0d938fdb902fa77c6c1c515cb0085db7050d3e0ea8cdeced2983bac9262. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES71G2125230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca4baf724b88115805713d8c3a85674cd38e6e0368c6ac9cbfc8d55588abad7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES71G2244818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e3f774f55c002b769f46f272091f21d34fea3456f96bb19f7f816e81100110. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2323911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ab78dd816dce82a337c66ac48fae798f48b74f9531a19f396d09c7c56c5ca2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES71G2500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cf9162851e44cf9029e68959da35df4bfa00fb94685c9bef436723aef819c6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ES71G2428731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e79d75234a3c36f36692db819bfe637ebfd32fa29c4b32556024b5cb8afcb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2500603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100b01d119729b9a1749848ee176e42a4cfa898be6c30bd2af85c0cbecca4ef0. 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/ES71G2500604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b1a1d02486d64744c8f1167bc11973665bd58d47ef9d75d36a5cd4d79f65da. 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/ES71G2500605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e099b68463cf93b3b2636319aecd4a8b350a8991137ca836300aaa40414af. 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/ES71G2500607.
En mi lugar - Día Internacional de la Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe847c18283e214b68ff79108b37c95c31941a3f625e149dad1b04e8e69fac6b9. 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/QM4TX2304791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55c5abaedf594fc206fdc9cd64b28f4f85953a278fd081320c25d7f975c67a. 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/ES5621904681.