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 0xd329861a8c650439fa463d7c7603973530e401a537751afb0e45391189c06318. 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/e47cd047-b4ea-47ea-905a-eedab3afc457.json and https://artists.proofprofile.net/proofs/artist/e47cd047-b4ea-47ea-905a-eedab3afc457.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 0x9cfcc3be94a9f62f4f241e57c6ca8b42f99117e368297d9ac4b1b0fc5cf30055. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/COC010526121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5048064ade1afd9fbfebc5b580736f13a041a7dfd8be214280be79243aa86b. 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/COC010526123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f648aa2ba91a1b57c065aadcb667fc469355329921a601a5e1d553953fc3eac. 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/COC010526125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5352056e3a996c1c78db839b4bb40806fe5f664a28aa7104c58954b867cf4bb3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/COC010526126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88efd1d47451bdcc1a0323cd1b04df3304e2d963b0c4635f441142b450d36323. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL8RL2336802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d547c024a8d45433644738610ec8ed9b015a7de342fe4fe9cbb7acee4187cb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6P41556215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c7b3a208d269364457f075ec43a7b1731b446bb44873e6968448a9642aa915. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM81938189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4996f8bd7924a6851624edd991c3f76460072fd1219bebd70d4314a05debee. 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/USMQY0813501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75a5db8ce5bf0004ad5c6df589e7572e9e446782fd099f5b5c46fecd118ea48. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USMQY0813502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4996f8bd7924a6851624edd991c3f76460072fd1219bebd70d4314a05debee. 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/USMQY0813501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ce193fd5207d916add8938aec0c6e55677c4c4fd60b90b892dbcc2a94dadb3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASN2220408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff3b4160405d8bd51191f7cc0e6032b69459e2159a42e9e9aad22e2784e2e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/COC010526129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967859336822660dbf39adc46ead8482af1d004c26937f33694a470ec42b3542. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA560622027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284ae851b96c5a49740af8439ea02c98d0bbbe568b87f6d75400801d898d4b3a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA560622042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967859336822660dbf39adc46ead8482af1d004c26937f33694a470ec42b3542. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA560622027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c18814d86755cb62f0016abd92accad99499eeaad65f6263b1aab491a4a98d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA560724233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e88049f6cd9e1e25127bf5cfbe64287e7a0b0460fce4edaf7253adc5f0976. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4R2032930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52234db5c77beb5c1cec4dfa9699a9098cbaf6e12fce9887fbf520c16e64f6. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USA371015460.
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
Los Soneros de Hoy: Tributo a los Soneros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fbc5feb8427fe79cf2a2c3c84a9064f5d152b8d38fd3d6bbd7760adbb2d2e1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMBZ91653830.