The Calling may refer to: Art The Calling (McCann sculpture), a 2003 outdoor sculpture in Belfast The Calling (di Suvero), a 1982 public artwork by American artist Mark di Suvero Books The Callin
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 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 0x6b094fcfe0dbfc5a00f94dbdaaf1486144b8ef0877cf8b9ba2d70215573813a8. 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/2a39c713-a555-42d0-937d-814a08b9f4d6.json and https://artists.proofprofile.net/proofs/artist/2a39c713-a555-42d0-937d-814a08b9f4d6.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 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 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ace5e1b603d748ad59c69f185a0b85b406f2233276bb0146283beb02da7888. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USRC10200908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40668e1d824241233787ecffaccaf8a5a6e83a7d8a3612c21a85e6b9bcec7bf. 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/USRV80400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d64c175eea4b33ec445dacf5742bc0ed77c0bfd3e8152e5f4c98f7962796dca. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USRC10400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afbc0015673975211cd2d4b9ebcbb22b45eea3d593b537e461b8480566f47b7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USRC10400345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db617f39907f37ec93d31834e669500eb9471affe4463c9a9da3b8ee67c524a. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USRC10400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63837b5c21acf0bddef04765628f0484cb29ab260077d2808c98e09395f49683. 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/USRC10400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c28ec6515ab70b9cabb838f8910938ba0fc9ec945a524f596fb1bdf1c912612. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USRC10400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db617f39907f37ec93d31834e669500eb9471affe4463c9a9da3b8ee67c524a. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/USRC10400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b4321589d0c26b8e2e699b411eb67087de749693adfc489432a03506e1bc9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USRC10400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c28ec6515ab70b9cabb838f8910938ba0fc9ec945a524f596fb1bdf1c912612. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USRC10400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4588ef73e415a3393a98d85f4b0651125ceacd8f22dc77ef1472b82fa5d681af. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USRC10400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b50612f843b0c1f1c98a4ca9416d77e78b207eb53cafa431d727a557d77a81e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USRC10100311.
Things Will Go My Way - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4442d3f0d02121652e4bd26a74cbf6c242c42224dc5f67562a45915df3dd87a7. 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/USRC10401048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde190758e260090fdc70823657db5cca18300ee42b178b1b001e46f868341c10. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USRC10100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb263ba5d1c335bfd1da4962d312c0e951344d24fcfda2e1380cab3ab1baea8e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/USRC10100309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efa08b8101aa406be42a3809c257c3954f27cd5a4e3307e11de953ce94e3444. 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/USRC10100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794af363b4a7812f4477f0068184d62eb7822371e923fbf46b9019905c462f0c. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USRC10100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63837b5c21acf0bddef04765628f0484cb29ab260077d2808c98e09395f49683. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USRC10400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. 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/USRC10001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc3f37bb57f10da03ee7a6c7b25f6a4670609fd8b12ac80ead5fcba264e278. 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/USRC10001047.