The Rio Grande ( or ), in the United States, or the Río Bravo (del Norte), in Mexico (), also known as Tó Ba'áadi in Navajo, is one of the principal rivers (along with the Colorado River) in the South
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 0x9322a4be6bde3ee5ae77e0769c14b8a43ab3a2db683592f6a1963816944beb80. 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/f23569de-07e5-49a2-a547-59e7d4cce853.json and https://artists.proofprofile.net/proofs/artist/f23569de-07e5-49a2-a547-59e7d4cce853.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 0x6a45386e7e66c6be512b21443ea3be25872a16cabd719f61a05da167e4e7b6a2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/PTEM19600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c9629b66db3e230112b3b378d021c37d11fbfb3c3d7086ecc2d5e2bd7433c. 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/PTEM19600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456efc3db2666324ed94709fc6106ff5a009b082f0b46e784ee015f5da7863f6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:55Z), 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/PTEM19600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b3db6440e0dadacc41972811ee93923df27ae1563e388564f60b948617f08. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:20:45Z), 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/PTEM19600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ef0c77f294d5338597f416acaf91255193d1af8a833c1c1ca7d6b34ede7a67. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:49Z), 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/PTEM19600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b511ff43084fbc3b68db18653a1ed787440cd3f48d4a699288753187f9bc631. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/PTEM19600055.
A paixão (Segundo Nicolau da Viola) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7bdca2adf17fa449e0b766005197d2ae678c7adec173cc1dea7210a97b4a9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:00:47Z), 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/PTEM19700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed44e23adf97571f3dfa5ba9252a65ecf53c1e1c17f2b7a1d694047ce100f35. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:32Z), 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/PTEM19700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b41ed7496f7baa6a0ca7be2ae1b97d23065145938e64d20bef3c0a70259060. 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/PTEM19700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf96800ac48677f1e8c33db71ba08eb9b7191cc314133564500cda606459cd8e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:48Z), 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/PTEM19700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa852ce22bb01950e599ec6da7986961ec7f035c4188edbd7bc2bd4022d2f23f3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PT6GJ1700013.