Puerto, a Spanish word meaning seaport, may refer to: Places El Puerto de Santa María, Andalusia, Spain Puerto, a seaport town in Cagayan de Oro, Philippines Puerto Colombia, Colombia Puerto Cumarebo
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 0xeefa49d50e0c7c3baeced5807e3606b7c33e71fce128420f05aea2c9b18e4a99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72196320-e0ac-4866-9141-c3ed82bd6bc8.json and https://artists.proofprofile.net/proofs/artist/72196320-e0ac-4866-9141-c3ed82bd6bc8.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 0x880dc3e435e43520d16d88a8ed2c9969b44a52b6e95878b52c2c83051f63935f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ31911189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa8cf70a0c065bc446e8f17921f04282be7a3162d6cea7fe5821477cf431d2e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:29Z), 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/QZFZ72087093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9173c5f6ad473e64a0332c63214b79bc1d99a173562a2e2c9918ce8497e91. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES52059471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb60725c800c6e740fe0566b64ba8aaa905e12a58140f4d1c9eab735b3caa23. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN72095512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb60725c800c6e740fe0566b64ba8aaa905e12a58140f4d1c9eab735b3caa23. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72095512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f6f61dbe01eef35b1f449a7c873e918db0ebf973cf0837e9b6bfac26f77042. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMER2050655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff516f72d7869ebb0a67d7fbec1f1331c0e67de5d83147927d14ea82d26da7b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:22:04Z), 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/QZFZ72086301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f5bbe35b96d97ba29816a8740e3c0d3931dade06bc1b8463aa60fb6dbb3d38. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:55Z), 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/QZMER2050654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1ed20aceea3d451e43ec41a6d08b12a69e2db3b63d5b99a58a91b6a17e78ab. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:26Z), 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/QZHN42094055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53c14806a06105095b9459eb62ce2c9a22a81c08cf7beb2f76293abe994e5a7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZFYW1960317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce55297ac6dc49b99449787008b02b685531131048bbcfc28d8d12b5885feca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:35:50Z), 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/QZES52156323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce55297ac6dc49b99449787008b02b685531131048bbcfc28d8d12b5885feca. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZES52156323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c1fa4b0eef122c54ae86ba8694b64ab0e8ade6cdb4e027b562a1bd4e59d3bc. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:35:15Z), 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/QZN882134045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d923329e549e01e5fc494153eb7064c8561864299c19d0245d2f2815932cd. 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/SKA012200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507a44904dcc1ea1836005513e2df0493395d69bbfba865c477a3dc89547d9b0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:51Z), 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/SKA012200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f312e7f22eb4c84a30050faf4b9da216c309a805791aea19bff69fef8ababd5. 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/SKA012200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92209f998a901c884c374b9b34704bf1ff9b98bd70b262b619796a5ed58686. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:47Z), 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/SKA012300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6621343e0417ca1c06207a6618d943b197885c29386a1941b00d61d3372a32. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SKA012300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd07f7215e87b628e5d21cacc26a716a17b36782a5e9b4ac73c887eceabdbe3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZZ7L2408817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd07f7215e87b628e5d21cacc26a716a17b36782a5e9b4ac73c887eceabdbe3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:50:42Z), 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/QZZ7L2408817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea7853f04a6d8984fbc00c7b076dc40131830f8d6a95fdeb4624b2061927a61. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZN882597169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0868bcf3f0d8f203ff03c64a9e07d0e30a4448394f9d8b9186c203d3c726a546. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:17Z), 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/QZWDW2569224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a0cd1b21084d614fcdf3db39f5b2e99a81c315675b475bd3d78b639b8f12ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882255279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ed778b0ea9127706dcc5c2e971832621f43a3fea13aa709c1be139adc6289. 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/CZUM72300608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9cf0c236452fea9b023fdf48bda56e330524c08fd2b49da233bdcad86c26e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CZH441601840.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f69c4af47cb075b1dfb5f11a25ecb15478959b49853d58bc2c761f7e159854. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CZH441900145.