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 0xc71f308a97525311aca33a56e8b0e22f1279e0c8d5b787195ec2f8020eb309f2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/378d3dec-861e-440e-a749-b674d5fbece5.json and https://artists.proofprofile.net/proofs/artist/378d3dec-861e-440e-a749-b674d5fbece5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Todas sus grabaciones en La Voz de su Amo, Vol.3 (1964-1974)
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 0x799f5e36d87680e1620099f4e0208dc135970aacc2c36a102588cfb890995b3c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5086800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f904b1eacb5ae890371e36fc7a8d7e1472a7c0f60be697ef3f9a8ac833d33b. 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/ES5151602208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7eaf35396543be0d6298f9661e9ffbb90997cf37b1e95596251eb448ef6cd7. 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/ES5151602209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60e8bff9bc75e53082fbfeff39264bd2ca1437d4e6b34cc7f99bb91825b12e3. 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/ES5086800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540f5542ad7d8c1781b844811ce2db95dbd99a61b49381c5bd81e0d81a8ab16. 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/ES5151602215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8b868b5569a919e7fc8541066194c61063af7dde02237f28f7274cf5dc84b. 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/ES5087100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a53dc00bfba4bcadf8d8aaec1104e07448b7a90bfc3d4b720617d44edafbe. 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/ES5151602227.
Todas sus grabaciones en La Voz de su Amo, Vol.2 (1964-1974)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2022ca2c4105eef08d6db5f1501fe5cec350ed7dbdc049669777f83988b4f28. 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/ES5086600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9781d7c465a2495a8255aea274ecf0d02a28342f1796ee9f9db9e10ded0811da. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5086600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d8ee7c92bc7e8b1492691f6df1dc6644cf7424fb1210f2fe1f8e605031897. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/ES5151602191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5e9df0f4b32576f9632a7901926459cdae589e1dfb5d9d951da90048ad135. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5086600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab46c3f3e0734b6c1a90e72474a2213d966326843b11fbd36598657055e6de. 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/ES5151602196.
Tal vez un día - 2016 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae2ce14205646985e254f63824f72a8aaed9086183f7f3872af06b823631b98. 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/ES5151602198.
En todas partes - 2016 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb760aa2b5f5fd520d87fb08d98ebc46d904409d2ebd5f3fde7d5582afd47c81a. 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/ES5151602206.
Todas sus grabaciones en La Voz de su Amo, Vol.1 (1964-1974)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f01cb810aa26f4b39e97539f16980c63c286a9306874aed383b5bbacdf5d364. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:52:08Z), 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/ES5089600145.
Mallorca bella - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d2a507ec7373b13f02dbec481612a03a59622bed0c1e7dfb5510b6955024b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5151502654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c002c34eb707aacabea033d4bd811bc1144e7211432e1ee720920a03ee95e5f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5089600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314e5d7388fde6fa278cbbda6a1b954bd9653ce80c4ae9964c6bc312df50503. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5086600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc9da5b9395c9046591ddd0fcccf0b3660ef6edb89608827e21c4cf4a203c50. 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/ES5086500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8b868b5569a919e7fc8541066194c61063af7dde02237f28f7274cf5dc84b. 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/ES5087100122.
Cuando salí de Cuba - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbeed0f9e13917421a94789eae28b8b94d9526423e2376e3d31c9770aa20b67. 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/ES5088000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42e90077bc40ec569331f3d066012c62d8cbee73ffbe50219edadd036c1f87. 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/ES5086600040.
El porompompero - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2889966dee83c860a5d8dc1d1a4bae4bd87fe0ff1018f199b25a7c05c2643. 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/ES5151502651.
En una isla maravillosa (En Palma de Mallorca) - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5e1bd297debc63ef48a5a5bce76d43d3bd11ad605809d35780555cadb2b57a. 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/ES5151502652.
Ave María en el morro - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857a36c9d1b7448aa54d72c9381414a50a22fcbf40dae9fea87ff540d7ffa9b3. 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/ES5151502657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0061570ccc4bbf1c2047a71d1c91a7bcc6a9026ce9a5c33c801db01b54e96f. 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/ES5371800420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4987d75f85b703608d11ab73c469bc80df585a731b01302bfe0584c630c9a7ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5371800421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f41bad164d82bfa170bbe5198445013da349987a05bf5c30d478b540ece34f. 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/ES5371800425.