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 0x5d59df72878da3bfd713e8ac1c881b530feabce3f635280525539fef327de791. 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/febf2b4b-b2da-4671-8519-fe753945ea59.json and https://artists.proofprofile.net/proofs/artist/febf2b4b-b2da-4671-8519-fe753945ea59.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 0xde25d669c19025c91b6010c68645f840298101e9b80c825e9a5be42fa5894a45. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMDA61312799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcc59e423f23195ca2980ba823221baa84beb339230cc70c85c993bc262464e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMDA61312800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cbbbdf197aa30abc25b834b973b24c1d4325dadf6dcc74be24a243e1652f80. 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/QMDA61312802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9a614405ab7c3e3d735becb6fbe222212d924ba2820d62001dab6413e1e942. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMDA61312804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9547b62bf38157de068749c5be86d74b9d31318870c326092a67d6b93e35e7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMDA61312805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c2bde8909869e9cc42fad3fe563d178585a15cfe32621ac8704f086ec46057. 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/QMDA61312806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd189487bc5b3008d602497b813305975909444ab99edf13dbbd0a259977de7b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDA61312807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4278b4acdb0b9057574133d6731b36ea1abba0f6429bd68b62182a1368e84c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/AR1WD2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a61d30e0ad269aa042ae80bd1b42669b506f0eff647dbd888ef1ec012b4259. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/AR1WD2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e00c36a5b482e120438e535d849cf922631ca9a4f8d5fdd738834006200e67. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AR1WD2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b4c7acae424693b0874d29a244d33dd6f405f276a64a0b7bb361e4d791fd3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ARZ022000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68681a63f72d990f85468ca7505644f685f3cfee924faf9ed97eac1ad759c789. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:18Z), 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/ARR6V2100401.
Canciones y Poemas en Dirección del Viento (1965 - Remasterizado)
El hombre que canta al hombre (1964 - Remasterizado)
La vuelta de Ramón Ayala "El Mensú" (1976 - Remasterizado)
Anthologie de L'amerique Latine: Argentine (1978 - Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bebb35e588323b245290de8c6d519d6e09148c52fc3ddd49f56936036292ea. 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/ARR6V1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32100c138667151687f83fef115133006404bef95f9dd8a29615f69b434e6511. 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/ARZ022200535.